Journal articles: 'Pulse width modulation inverter'

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Arkan, A. Kadum. "PWM control techniques for three phase three level inverter drives." TELKOMNIKA Telecommunication, Computing, Electronics and Control 18, no. 1 (2020): 519–29. https://doi.org/10.12928/TELKOMNIKA.v18i1.12440.

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In this paper two very efficient pulse width modulation techniques were discussed named Sin pulse width modulation and space vector pulse width modulation. The basic structure of the three-level inverter neutral-point clamped is introduced and the basic idea about space vector pulse width modulation for three-level voltage source inverter has been discussed in detail. Nearest three vectors space vector pulse width modulation control algorithm is adopted as the control strategy for the three phase three level NPC inverter in order to compensate the neutral-point shifting. Mathematical formulation for calculating switching sequence has determined. Comparative analysis proving superiority of the space vector pulse width modulation technique over the conventional pulse width modulation, and the results of the simulations of inverter confirm the feasibility and advantage of the space vector pulse width modulation strategy over sin pulse width modulation in terms of good utilization of dc-bus voltage, low current ripple and reduced switching frequency. Space vector pulse width modulation provides advantages better fundamental output voltage and useful in improving harmonic performance and reducing total harmonic distortion.

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Gireesh Kumar, Devineni, Nagineni Venkata Sireesha, D. S. Naga Malleswara Rao, Pandla Chinna Dastagiri Goud, Musheer Vaqur, and T. V. V. Pavan kumar. "Optimized Inverter Circuits for Driving Dual AC Loads for Home Solar Water Pumping." E3S Web of Conferences 430 (2023): 01005. http://dx.doi.org/10.1051/e3sconf/202343001005.

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This research presents a generic pulse width modulation (PWM) approach for nine switch inverters and five-leg inverters. The circuit design of both inverters and a modulation mechanism for separate drives have been described. The available DC bus voltage supplied the two induction motors using a PWM technique for a 5-leg inverter. Nine-switch inverters and nine-switch z-source inverters have lately been presented as dual-output inverter. A nine-switch z-source inverter and a unique pulse width modulation (PWM) were created. Also, a five-leg inverter is modelled using Extended Two Arm Modulation (ETAM) scheme. The suggested modulation techniques were applied to control two machine drive systems with a single inverter architecture with a reduced switch count for pumping the water to house hold appliances. The comparative analysis of the two dual-output inverters is integral to this work.

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N., Susheela, and Satish Kumar P. "Performance evaluation and comparison of diode clamped multilevel inverter and hybrid inverter based on PD and APOD modulation techniques." International Journal of Advances in Applied Sciences (IJAAS) 8, no. 2 (2019): 143–53. https://doi.org/10.11591/ijaas.v8.i2.pp143-153.

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The popularity of multilevel inverters have increasing over the years in various applications without use of a transformer and has many benefits. This work presents the performance and comparative analysis of single phase diode clamped multilevel inverter and a hybrid inverter with reduced number of components. As there are some drawbacks of diode clamped multilevel inverter such as requiring higher number of components, PWM control method is complex and capacitor voltage balancing problem, an implementation of hybrid inverter that requires fewer components and less carrier signals when compared to conventional multilevel inverters is discussed. The performance of single phase diode clamped multilevel inverter and hybrid multilevel inverter for seven, nine and eleven levels is performed using phase disposition, alternate phase opposition disposition sinusoidal pulse width modulation techniques. Both the multilevel inverter are implemented for the above mentioned multicarrier based Pulse Width Modulation methods for R and R-L loads. The total harmonic distortion is evaluated at various modulation indices. Theanalysis of the multilevel inverters is done by simulation in matlab/simulink environment.

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Ch., Lokeshwar Reddy, and Janardhan G. "Enhancing the Performance of Multilevel Inverters using Modified SVPWM Techniques." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 3632–40. https://doi.org/10.35940/ijeat.B4402.029320.

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In this paper, two types seven-level multilevel inverters in three phase configuration, Cascaded H-bridge Multilevel Inverter (CMLI) and Diode Clamped Multilevel Inverter (DCMLI) are simulated and compared the results for three different carrier PWM techniques. Here, Carrier based Sinusoidal Pulse Width Modulation (SPWM), Third Harmonic Injected Pulse Width Modulation (THIPWM) and Modified Carrier-Based Space Vector Pulse Width Modulation (SVPWM) are used as modulation strategies. These modulation strategies include Phase Disposition technique (PD), Phase Opposition Disposition technique (POD), and Alternate Phase Opposition Disposition technique (APOD). In all the modulation strategies, triangular carrier and trapezoidal triangular carrier signals are compared with reference signal for generation of control pulses. The simulations have been carried out for seven-level CMLI and DCMLI using MATLAB/Simulink. The detailed analysis of results in terms of %THD and utilization of DC-link voltage has been presented in this paper. By increasing the performance of inverters the utilization of input energy is reduced, then the corresponding energy sources can be reduced.

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Muqorobin, Anwar, Sulistyo Wijanarko, Harjono Priyo Santosa, and Indrarini Dyah Irawati. "Output current ripple analysis of single phase inverter with discontinuous PWM." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 4 (2024): 2253. http://dx.doi.org/10.11591/ijpeds.v15.i4.pp2253-2261.

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Voltage source inverter has been applied for uninterruptible power supply (UPS), renewable energy sources, and motor drive. The popular modulations for inverters are sinusoidal pulse width modulation (SPWM), zero sequence signal modulation (ZSS), space vector modulation (SVM), and discontinuous PWM (DPWM). All these modulations have been applied to three-phase and multiphase inverters. The characteristics of the modulation application in these inverters have been well investigated. However, only SPWM has been applied satisfactorily in single-phase inverter. From the literature, the applications of ZSS and DPWM couldn’t show any benefit. In this paper, a DPWM is proposed for single-phase inverter. The output current ripple is analyzed and experiments are conducted to verify the analytical result. Comparison to SPWM is conducted to find the modulation index range that provides a benefit when using the DPWM.

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Muqorobin, Anwar, Sulistyo Wijanarko, Harjono Priyo Santosa, and Indrarini Dyah Irawati. "Output current ripple analysis of single phase inverter with discontinuous PWM." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 4 (2024): 2253–61. https://doi.org/10.11591/ijpeds.v15.i4.pp2253-2261.

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Voltage source inverter has been applied for uninterruptible power supply (UPS), renewable energy sources, and motor drive. The popular modulations for inverters are sinusoidal pulse width modulation (SPWM), zero sequence signal modulation (ZSS), space vector modulation (SVM), and discontinuous PWM (DPWM). All these modulations have been applied to three-phase and multiphase inverters. The characteristics of the modulation application in these inverters have been well investigated. However, only SPWM has been applied satisfactorily in single-phase inverter. From the literature, the applications of ZSS and DPWM couldn’t show any benefit. In this paper, a DPWM is proposed for single-phase inverter. The output current ripple is analyzed and experiments are conducted to verify the analytical result. Comparison to SPWM is conducted to find the modulation index range that provides a benefit when using the DPWM.

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Nayeemuddin, M., T. Bramhananda Reddy, and M. Vijaya Kumar. "Level Shifted Discontinuous PWM Algorithms to Minimize Common Mode Voltage for Cascaded Multilevel Inverter Fed Induction Motor Drive." International Journal of Power Electronics and Drive Systems (IJPEDS) 9, no. 2 (2018): 504. http://dx.doi.org/10.11591/ijpeds.v9.i2.pp504-518.

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This paper presents combinations of level shifted pulse-width modulation algorithm with conventional discontinuous pulse-width modulation methods for cascaded multilevel inverters. In the proposed DPWM a zero sequence signal is injected in sinusoidal reference signal to generate various modulators with easier implementation. The analysis four various control strategies namely Common Carrier (CC), Inverted Carrier (IC), Phase Shifted (PS) and Inverted Phase Shift (IPS) for cascaded multilevel inverter fed induction motor drive has been illustrated. To validate the proposed work experimental tests has been carried out using dSPACE controller. Experimental study proves that using proposed algorithms reduction in common-mode voltage with fewer harmonics along with reduced switching loss for a cascaded multilevel inverter fed motor drive has been achieved.

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R, Palanisamy, M. Nivethitha Devi, Manikandan T. R, et al. "Comparative analysis of different types of pulse width modulation techniques for multilevel inverters." Indonesian Journal of Electrical Engineering and Computer Science 37, no. 1 (2025): 680. http://dx.doi.org/10.11591/ijeecs.v37.i1.pp680-688.

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Multilevel inverters have gained significant attention in recent years due to their ability to achieve higher voltage and lower harmonic distortion compared to conventional two-level inverters. Pulse width modulation (PWM) techniques play a crucial role in controlling multilevel inverters by generating the required switching signals for their power electronic devices. This paper presents a comprehensive comparative analysis of various PWM techniques employed in multilevel inverters, including sinusoidal pulse width modulation (SPWM), space vector pulse width modulation (SVPWM), carrier-based pulse width modulation (CBPWM), and selective harmonic elimination (SHEPWM). Each PWM technique's advantages, limitations, and suitability for different multilevel inverter topologies are discussed. Furthermore, recent advancements and hybrid PWM techniques are also examined to explore potential improvements in performance and efficiency. This paper aims to provide researchers, engineers, and practitioners with valuable insights into selecting the most appropriate PWM technique for their specific multilevel inverter applications, considering factors such as performance requirements, cost constraints, and ease of implementation.

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Palanisamy, R. M. Nivethitha Devi Manikandan T. R. K. Mekala Devi Rashima Mahajan Selvabharathi D. Selvakumar K. "Comparative analysis of different types of pulse width modulation techniques for multilevel inverters." Indonesian Journal of Electrical Engineering and Computer Science 37, no. 1 (2025): 680–88. https://doi.org/10.11591/ijeecs.v37.i1.pp680-688.

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Multilevel inverters have gained significant attention in recent years due to their ability to achieve higher voltage and lower harmonic distortion compared to conventional two-level inverters. Pulse width modulation (PWM) techniques play a crucial role in controlling multilevel inverters by generating the required switching signals for their power electronic devices. This paper presents a comprehensive comparative analysis of various PWM techniques employed in multilevel inverters, including sinusoidal pulse width modulation (SPWM), space vector pulse width modulation (SVPWM), carrier-based pulse width modulation (CBPWM), and selective harmonic elimination (SHEPWM). Each PWM technique's advantages, limitations, and suitability for different multilevel inverter topologies are discussed. Furthermore, recent advancements and hybrid PWM techniques are also examined to explore potential improvements in performance and efficiency. This paper aims to provide researchers, engineers, and practitioners with valuable insights into selecting the most appropriate PWM technique for their specific multilevel inverter applications, considering factors such as performance requirements, cost constraints, and ease of implementation.

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Odeh, Charles Ikechukwu, Dmytro Kondratenko, Arkadiusz Lewicki, Marcin Morawiec, Andrzej Jąderko, and Janusz Baran. "Pulse-Width Modulation Template for Five-Level Switch-Clamped H-Bridge-Based Cascaded Multilevel Inverter." Energies 14, no. 22 (2021): 7726. http://dx.doi.org/10.3390/en14227726.

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This article presents a carrier-based pulse-width modulation (PWM) template for a 5-level, H bridge-based cascaded multilevel inverter (MLI). The developed control concept generates adequate modulation template for this inverter topology wherein a sinusoidal modulating waveform is modified to fit in a single triangular carrier signal range. With this modulation approach, classical multiplicity and synchronization of the triangular carrier signals criterion for the extension of sinusoidal pulse-width modulation, SPWM, to several cascaded 5-level, H-bridge-based MLI topology are removed. The proposed template can be used on the inverter configuration of any level with no further control modification. Nearly even distribution of switching pulses and equalized individual cascaded cell output power were achieved with the proposed modulation scheme. Three 5-level, H-bridge-based MLI units were cascaded for 1-phase, 13-level inverter operation; simulation and experimental results are adequately presented.

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Bayazid, Md Hasan, Tawfikur Rahman, Masuma Akter, et al. "Hybrid Switching Control-Based DC to AC Inverter for Microgrid Using Renewable Energy Sources." IUBAT Review 6, no. 1 (2023): 25–46. http://dx.doi.org/10.3329/iubatr.v6i1.67229.

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Hybrid switching control-based direct current (DC) to alternating current (AC) inverter is a method of controlling the flow of power from DC sources such as solar panels or wind turbines to AC loads in a microgrid. In a microgrid, renewable energy sources are often used to supplement traditional sources of energy and improve overall energy efficiency. To simulate micro-grid systems, an effective three-legged IGBT inverter has been developed using Matlab R2016a/Simulink. The inverter switches are controlled by a pulse controller, which creates the switching gate pulses. This work models the output voltage and current waveforms of the three-phase 180° voltage source inverter that supplies nonlinear loads. To lower the total harmonic distortion (THD) of the current and voltage outputs of the three-phase voltage source converter (VSC), a filter circuit and a two-level pulse width modulation (PWM) generator have been presented. This pulse-width modulation generator compares the modulating signal and a high-frequency triangular carrier wave. Sinusoidal pulse width modulation (SPWM) is used for PWM control. Moreover, the hybrid switching control-based DC-to-AC inverter utilizes a combination of pulse width modulation (PWM) and hysteresis current control techniques to maintain a constant AC output voltage and frequency. PWM control is used to regulate the voltage, while hysteresis current control is used to regulate the current. Additionally, an inductor-capacitor-inductor (LCL) filter is used to improve the stability of the power converter by providing a damping effect on the system. Overall, the LCL filter is a versatile and effective tool for improving the performance of power inverters, especially in applications where high efficiency and low harmonic distortion are important. IUBAT Review—A Multidisciplinary Academic Journal, 6 (1): 25-46

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Park, HyunHo. "ANN Controller Based Single phase Inverter in Smart City." International Transactions on Electrical Engineering and Computer Science 2, no. 2 (2023): 60–69. http://dx.doi.org/10.62760/iteecs.2.2.2023.51.

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Solar-grid integration is a method for incorporating large amounts of photovoltaic (PV) supply to the grid. Advanced inverter technology, smart grids technology, islanding detection technology, solar-grid forecasting technology, grid-plant protection technology and are all part of solar-grid synchronization technology. Many methods are used to control inverters, including sinusoidal pulse width modulation, selective harmonic suppression pulse width modulation, space vector width modulation. Among control methods, pulse width modulation is the most popular. PWM inverters are used for two different switching techniques: bipolar and unipolar. The primary goal of this paper is to create an inverter that will convert a solar DC power source to an AC power source that can be used to power a load or connected directly to the utility grid. In this work, the control of inverter output voltage is done without the need for any user intervention, but only with the intervention of an AI technique, and it is compared to existing methods.

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Panneerselvam, Sivaraj, Karunanithi Kandasamy, S. Sivakumar, N. Vignesh Prasanna, and R. Hushein. "Switching loss and temperature analysis of MPWM controller for solar PV inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 4 (2024): 2545. http://dx.doi.org/10.11591/ijpeds.v15.i4.pp2545-2552.

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Despite the fact that temperature affects how much power is produced by solar panels, a temperature that exceeds a certain threshold results in a reduction in output. Additionally, there are losses when switching is controlled in inverters using different control approaches like pulse width modulation (PWM), sinusoidal pulse width modulation (SPWM), and multiple pulse width modulation (MPWM). The type of control method and temperature have an impact on these losses. Here, the MPWM approach is used to analyze it at various temperatures. A metal-oxide-semiconductor field-effect transistor or MOSFET-based and an insulated gate bipolar transistor (IGBT)-based inverter are also planned. Their switching losses at various temperatures are contrasted. For a range of temperature values, the IGBT-equipped inverter is discovered to be a low-loss inverter. Compared to an IGBT inverter, the MOSFET inverter has a comparatively higher loss.

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Panneerselvam, Sivaraj, Karunanithi Kandasamy, S. Sivakumar, N. Vignesh Prasanna, and R. Hushein. "Switching loss and temperature analysis of MPWM controller for solar PV inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 4 (2024): 2545–52. https://doi.org/10.11591/ijpeds.v15.i4.pp2545-2552.

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Despite the fact that temperature affects how much power is produced by solar panels, a temperature that exceeds a certain threshold results in a reduction in output. Additionally, there are losses when switching is controlled in inverters using different control approaches like pulse width modulation (PWM), sinusoidal pulse width modulation (SPWM), and multiple pulse width modulation (MPWM). The type of control method and temperature have an impact on these losses. Here, the MPWM approach is used to analyze it at various temperatures. A metal-oxide-semiconductor field-effect transistor or MOSFET-based and an insulated gate bipolar transistor (IGBT)-based inverter are also planned. Their switching losses at various temperatures are contrasted. For a range of temperature values, the IGBT-equipped inverter is discovered to be a low-loss inverter. Compared to an IGBT inverter, the MOSFET inverter has a comparatively higher loss.

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Janardhan, G., N. N. V. Surendra Babu, and G. N. Srinivas. "Single phase transformerless inverter for grid connected photovoltaic system with reduced leakage current." Electrical Engineering & Electromechanics, no. 5 (September 6, 2022): 36–40. http://dx.doi.org/10.20998/2074-272x.2022.5.06.

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Introduction. Transformerless inverters are of vital importance in the field of grid connected solar photovoltaic systems offering higher efficiency than the conventional one. i.e., using transformer. General grid connected inverters are constituting of transformers requires more area besides the loss in them. Problem. Eliminating transformers can cause leakage current due to the variation of common mode voltage which in turn due to parasitic capacitance effect. Research literature in transformerless inverters has addressed the problems of common mode leakage current issues by offering the study of different inverter topologies like H4, H5, H6 and HERIC etc. utilizing variety of modulation strategies like unipolar, bipolar pulse width modulations. Goal. The paper significantly presents a new transformerless inverter topology, analyzes common mode voltage and leakage current behavior of the system. The simulation is carried out for comparing the leakage current profiles with other transformerless inverter topologies in literature. Novelty. This paper gives an impression of the efficient transformerless inverter for grid connected photovoltaic system. Results. The various inverter topologies full bridge with different pulse width modulation techniques are analyzed and to determine the common mode voltages and leakage currents.

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Setiyono. "DESAIN PEMBANGKIT PULSA PENYALAAN INVERTER 3 FASA MENGGUNAKAN SPACE VECTOR PULSE WIDTH MODULATION (SVPWM)." Jurnal Ilmiah Teknologi dan Rekayasa 27, no. 3 (2022): 226–43. http://dx.doi.org/10.35760/tr.2022.v27i3.5079.

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Pada paper ini disajikan algoritma pembangkit pulsa kendali untuk mengatur kinerja saklar inverter sebagai driver motor induksi 3 fasa dengan metode Space Vector Pulse Width Modulation (SVPWM) melalui simulasi pemodelan menggunakan tools matlab Simulink. Metode SVPWM memiliki bentuk tegangan keluaran dengan indeks Total Harmonik Distortion (THD) lebih rendah dibandingkan dengan metode Sinusoida Pulse Width Modulation (SPWM). Deretan pulsa penyalaan dihasilkan melalui kalkulasi beberapa persamaan matematik yaitu perhitungan sinyal referensi, transformasi tegangan 3 fasa abc ke system dua dimensi dq, sektor, pola waktu penyalaan saklar inverter, dan pembanding sinyal pembawa segitiga dengan sinyal modulator. Kinerja saklar inverter membentuk 8 kombinasi keadaan dan diilustrasikan memiliki 6 buah sektor yang terpisah 600 antar sektor. Inverter dua level yang dibangun menggunakan 3 buah pasang saklar semikonduktor MOSFET. Desain simulasi diharapkan dapat dijadikan bahan acuan para peneliti untuk di implementasikan menjadi peralatan pengendalian mesin. Pemodelan ini juga digunakan untuk mengetahui dan menganalisis kendali penyalaan saklar inverter, pengaruh indeks modulasi terhadap kinerja saklar, dan pola waktu penyalaan pulsa tiap tiap pasangan saklar inverter. Hasil simulasi menjelaskan bentuk gelombang pulsa penyalaan yang dibangun menghasilkan deretan pulsa terkendali yang dapat menjalankan performa saklar inverter tiga fasa.

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Susheela, N., and P. Satish Kumar. "Performance evaluation and comparison of diode clamped multilevel inverter and hybrid inverter based on PD and APOD modulation techniques." International Journal of Advances in Applied Sciences 8, no. 2 (2019): 143. http://dx.doi.org/10.11591/ijaas.v8.i2.pp143-153.

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The popularity of multilevel inverters have increasing over the years in various applications without use of a transformer and has many benefits. This work presents the performance and comparative analysis of single phase diode clamped multilevel inverter and a hybrid inverter with reduced number of components. As there are some drawbacks of diode clamped multilevel inverter such as requiring higher number of components, PWM control method is complex and capacitor voltage balancing problem, an implementation of hybrid inverter that requires fewer components and less carrier signals when compared to conventional multilevel inverters is discussed. The performance of single phase diode clamped multilevel inverter and hybrid multilevel inverter for seven, nine and eleven levels is performed using phase disposition, alternate phase opposition disposition sinusoidal pulse width modulation techniques. Both the multilevel inverter are implemented for the above mentioned multicarrier based Pulse Width Modulation methods for R and R-L loads. The total harmonic distortion is evaluated at various modulation indices. The analysis of the multilevel inverters is done by simulation in matlab / simulink environment.

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M., S. Sujatha, Sreelakshmi S., Parimalasundar E., and Suresh K. "Mitigation of harmonics for five level multilevel inverter with fuzzy logic controller." Electrical Engineering & Electromechanics 2023, no. 4 (2023): 52–56. https://doi.org/10.20998/2074-272X.2023.4.08.

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Introduction. The advantages of a high-power quality waveform and a high voltage capability of multilevel inverters have made them increasingly popular in recent years. These inverters reduce harmonic distortion and improve the voltage output. Realistically speaking, as the number of voltage levels increases, so does the quality of the multilevel output-voltage waveform. When it comes to industrial power converters, these inverters are by far the most critical. Novelty. Multilevel cascade inverters can be used to convert multiple direct current sources into one direct current. These inverters have been getting a lot of attention recently for high-power applications. A cascade H-bridge multilevel inverter controller is proposed in this paper. A change in the pulse width of selective pulse width modulation modulates the output of the multilevel cascade inverter. Purpose. The total harmonic distortion can be reduced by using filters on controllers like PI and fuzzy logic controllers. Methods. The proposed topology is implemented with MATLAB/Simulink, using gating pulses and pulse width modulation methodology and fuzzy logic controllers. Moreover, the proposed model also has been validated and compared to the hardware system. Results. Total harmonic distortion, number of power switches, output voltage and number of DC sources are analyzed with conventional topologies. Practical value. The proposed topology has been very supportive for implementing photovoltaic based multilevel inverter, which is connected to large demand in grid and industry.

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Mohammad, Arif Khan, and Kumar Gupta Shailesh. "Simulation study of pulse width modulation schemes for three-phase impedance source inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 3 (2022): 1478–85. https://doi.org/10.11591/ijpeds.v13.i3.pp1478-1485.

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To avoid a short circuit of the input direct current (DC). source, a 3-phase inverter cannot run two switches in the same leg at a time, and it always operates in buck mode, with the output voltage being less than the input voltage. The Impedance source inverter features a feature that allows both switches in one leg to operate at the same time, and it can operate in buck/boost mode, which means the output voltage can be greater than the input voltage depending on the shoot-through time. In the literature, there are a few pulse width modulation (PWM) techniques for Impedance source inverter control. This research includes a simulation study as well as an examination of existing PWM schemes in the literature, as well as a proposal for TESVPWM for inverters. The inverter performance has evaluated using total harmonic distortion and fundamental components, validating by simulation findings.

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Cao, Lingling, Jiefeng Lin, Shikai Chen, and Yuanmao Ye. "Symmetrical Cascaded Switched-Capacitor Multilevel Inverter Based on Hybrid Pulse Width Modulation." Energies 14, no. 22 (2021): 7643. http://dx.doi.org/10.3390/en14227643.

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Multilevel inverters have been widely used in various industrial applications such as renewable energy generation and electric vehicles. An improved circuit of symmetrical cascaded switched-capacitor multilevel inverter is proposed so that the reactive power is absorbed by its power supply instead of capacitors. Then, a special hybrid pulse width modulation strategy combing level-shifted pulse width modulation (LS-PWM) and phase-shifted pulse width modulation (PS-PWM) was developed for the inverter. With this modulation algorithm, the power between cascaded units is automatically balanced, and the voltage of the capacitor in each unit is also automatically balanced to the dc input voltage. In addition, the optimized capacitor voltage ripple makes it possible to use a smaller capacitor to produce a better output voltage waveform. Theoretical analysis, simulation and experimental results show that the equivalent switching frequency of the cascaded multilevel inverter is twice the original frequency so that the output voltage harmonics are only distributed near even multiples of the carrier frequency.

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Venkatesan, V. Jamuna, and Gayathrimonicka Subarnan. "Multi Carrier based Multilevel Inverter with Minimal Harmonic Distortion." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 2 (2015): 356. http://dx.doi.org/10.11591/ijpeds.v6.i2.pp356-361.

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This paper presents performance features of Asymmetric Cascaded Multilevel inverter. Multilevel inverters are commonly modulated by using multicarrier pulse width modulation (MCPWM) techniques such as phase-shifted multicarrier modulation and level-shifted multicarrier modulation. Amongst these level-shifted multicarrier modulations technique produces the best harmonic performance. This work studies about multilevel inverter with unequal DC sources using level shifting MCPWM technique. The Performances indices like Total Harmonic Distortion (THD), reduction of switches and number of DC Sources are considered. A procedure to achieve the appropriate level shifting is also presented is this paper.

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Sreelakshmi, Sanka, Machineni Sanjeevappa Sujatha, and Jammy Ramesh Rahul. "Multi-level inverter with novel carrier pulse width modulation technique for high voltage applications." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 2 (2022): 667–74. https://doi.org/10.11591/ijeecs.v26.i2.pp667-674.

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The present work deals with multilevel inverters (MLI) with modified carrier pulse width modulation technique and its application, especially in solarbased applications due to its modularity in structure and suitability for medium or high-power applications. Several multilevel inverters are introduced for various applications. One of the drawbacks of these inverters is high total harmonic distortion (THD) value in the output which impacts the power quality. The main objective of this work is to improve the power quality, thereby increasing the life and performance of the overall system at the consumer side. The most popular and compact cascaded multilevel DClink inverter (CMDCLI) is considered for study and employed for 11-level operation. In general, sinusoidal pulse width modulation (SPWM) technique is used for control of inverter. However, the present work proposes a modified carrier-based hybrid pulse width modulation (HPWM) technique and has been tested with CMLDCLI. This novel technique compares the THD performance results with normal carrier wave considering R-L load. The results are analyzed in MATLAB environment and are validated with experimental results.

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Susheela, Nunsavath, and Satish Kumar. "Performance Analysis of FPGA based Diode Clamped Multilevel Inverter Fed Induction Motor Drive using Phase Opposition Disposition Multicarrier Based Modulation Strategy." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 4 (2017): 1512. http://dx.doi.org/10.11591/ijpeds.v8.i4.pp1512-1523.

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Multilevel inverters (MLI) are becoming more popular over the years for medium and high power applications because of its significant merits over two level inverters. This paper presents an implementation of multicarrier based sinusoidal pulse width modulation technique for three phase seven level diode clamped multilevel inverter. This topology is operated under phase opposition disposition pulse width modulation technique. The performance of three phase seven level diode clamped inverter is analyzed for induction motor (IM) load. Simulation is performed using MATLAB/SIMULINK. Experimental results are presented to validate the effectiveness of the operation of the diode clamped multilevel inverter using field programmable gate array.

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G., Janardhan, N. V. Surendra Babu N., and N. Srinivas G. "Single phase transformerless inverter for grid connected photovoltaic system with reduced leakage current." Electrical Engineering & Electromechanics, no. 5 (September 7, 2022): 36–40. https://doi.org/10.20998/2074-272X.2022.5.06.

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Introduction. Transformerless inverters are of vital importance in the field of grid connected solar photovoltaic systems offering higher efficiency than the conventional one. i.e., using transformer. General grid connected inverters are constituting of transformers requires more area besides the loss in them.  Problem. Eliminating transformers can cause leakage current due to the variation of common mode voltage which in turn due to parasitic capacitance effect. Research literature in transformerless inverters has addressed the problems of common mode leakage current issues by offering the study of different inverter topologies like H4, H5, H6 and HERIC etc. utilizing variety of modulation strategies like unipolar, bipolar pulse width modulations. Goal. The paper significantly presents a new transformerless inverter topology, analyzes common mode voltage and leakage current behavior of the system. The simulation is carried out for comparing the leakage current profiles with other transformerless inverter topologies in literature. Novelty. This paper gives an impression of the efficient transformerless inverter for grid connected photovoltaic system. Results. The various inverter topologies full bridge with different pulse width modulation techniques are analyzed and to determine the common mode voltages and leakage currents.

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Yatim, M. H., A. Ponniran, A. A. Bakar, A. N. Kasiran, K. R. Noor, and J. N. Jumadril. "Analysis of Symmetric and Asymmetric Multilevel Inverter Topologies Using Reduced Number of Switching Devices Circuit Structure." International Journal of Engineering & Technology 7, no. 4.30 (2018): 234. http://dx.doi.org/10.14419/ijet.v7i4.30.22127.

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This paper presents symmetric and asymmetric multilevel inverter principles using reduced number of switching devices circuit structure. Principally, asymmetric multilevel inverter topology able to produce higher output voltage level without modification of the structure in order to reduce total harmonic distortion at the output voltage. In contrast, the number of switching devices need to be increased with symmetric principle when higher output voltage level is considered. In this study, 5-level reduced number of switching devices circuit structure is selected as a circuit configuration for symmetric (5-level structure) and asymmetric (7-level and 9-level structures) multilevel inverters. For switching strategy, modified pulse width modulation and sinusoidal pulse width modulation are selected to produce output voltage levels of the inverter. Modified pulse width modulation used low switching frequency in producing signal and needs higher output voltage levels to achieve low total harmonic distortion. In contrast, sinusoidal pulse width modulation used high switching frequency in order to minimize total harmonic distortion. Theoretically, total harmonic distortion is reduced when number of output voltage level is increased for both cases. The findings show that, the 9-level asymmetric topology has lower total harmonic distortion compared to the 5-level symmetric topology and 7-level asymmetric topology, whereby these inverters using the same circuit configuration. The results show that, the total harmonic distortions of 9-level asymmetric topology, 7-level asymmetric topology and 5-level symmetric topology are 14.54%, 18.08% and 26.92%, respectively with sinusoidal pulse width modulation switching strategy. Meanwhile, with modified pulse width modulation switching strategy, the total harmonic distortions of 9-level asymmetric topology, 7-level asymmetric topology and 5-level symmetric topology are 18.7%, 21.68% and 28.99%, respectively. Therefore, 9-level asymmetric with sinusoidal pulse width modulation switching strategy show the lowest total harmonic distortion with optimum number of switching devices.

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Sujatha, M. S., S. Sreelakshmi, E. Parimalasundar, and K. Suresh. "Mitigation of harmonics for five level multilevel inverter with fuzzy logic controller." Electrical Engineering & Electromechanics, no. 4 (June 27, 2023): 52–56. http://dx.doi.org/10.20998/2074-272x.2023.4.08.

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Introduction. The advantages of a high-power quality waveform and a high voltage capability of multilevel inverters have made them increasingly popular in recent years. These inverters reduce harmonic distortion and improve the voltage output. Realistically speaking, as the number of voltage levels increases, so does the quality of the multilevel output-voltage waveform. When it comes to industrial power converters, these inverters are by far the most critical. Novelty. Multilevel cascade inverters can be used to convert multiple direct current sources into one direct current. These inverters have been getting a lot of attention recently for high-power applications. A cascade H-bridge multilevel inverter controller is proposed in this paper. A change in the pulse width of selective pulse width modulation modulates the output of the multilevel cascade inverter. Purpose. The total harmonic distortion can be reduced by using filters on controllers like PI and fuzzy logic controllers. Methods. The proposed topology is implemented with MATLAB/Simulink, using gating pulses and pulse width modulation methodology and fuzzy logic controllers. Moreover, the proposed model also has been validated and compared to the hardware system. Results. Total harmonic distortion, number of power switches, output voltage and number of DC sources are analyzed with conventional topologies. Practical value. The proposed topology has been very supportive for implementing photovoltaic based multilevel inverter, which is connected to large demand in grid and industry.

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Shaik, Sameera, Suresh Kumar Tummala, and D. Srinivasa Rao. "Control Techniques for the Cascaded and Cross-switched Multilevel Inverter - A Comparison." E3S Web of Conferences 309 (2021): 01120. http://dx.doi.org/10.1051/e3sconf/202130901120.

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Nowadays, the multilevel inverter has gained huge attention and has become more popularized in high voltage and high-power applications with low harmonics. As the number of output voltage increases, the harmonic content of the output voltage waveform decreases. In this paper, a comparison of cascaded H-bridge and cross-switched multilevel inverters for 7, 9, 15, 21 levels will be carried out. The different control techniques that will be used for carrying out comparisons are space vector pulse width modulation (SPVPWM), sinusoidal pulse width modulation (SPWM), and third harmonic injection pulse width modulation (THI-PWM) respectively. Here, the seven-level inverter is discussed mainly and can be extended to any number of levels.

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Alam, Aftab, Junaid Akhtar, Surendra Kumar, and Brij Mohan Prasad. "Design of SPWM Converter for Improving the Performance of Hybrid Electric Vehicles." International Journal of Microsystems and IoT 2, no. 6 (2024): 968–76. https://doi.org/10.5281/zenodo.13255048.

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The interest has grown in Hybrid Electric Vehicles (HEVs) because of the worries over environmental pollution and fuel consumption. The main components of an HEV are the power converter, electric motor, storage system which may be a battery, ultracapacitor, etc. and the internal combustion engine (ICE).  A three phase inverter changes fixed dc voltage into ac voltage whose magnitude and frequency can be obtained as required. Power electronics is an empowering technology which helps in development of such an inverter which can be utilized for many purposes.  Adjustable output voltage and frequency can be got from a number of pulse width modulation (PWM) methods. Sinusoidal Pulse Width Modulation (SPWM) is a mostly used method of Pulse Width Modulation. This paper focuses on the development of Sinusoidal pulse width modulation inverter using SPWM technique as SPWM has the advantages of lesser harmonics in the output voltage. The concept of unipolar and bipolar modulation is illustrated. Simulation of SPWM inverter has been presented to analyze the output line voltage, phase voltage and SPWM technique. Simulation of SPWM inverter has been done without and with filter and FFT analysis has been done to find the total harmonic distortion (THD) in the output line voltage. Hardware development of SPWM inverter has been done. dSPACE controller has been used for the generation of the firing pulses. Finally experimental results have been presented which include the waveforms of the firing pulses, output line voltage and output phase voltage.

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Kani, N. Ismayil, B. V. Manikandan, and Prabakar Perciyal. "A Novel Soft Switching Based Fuzzy Logic Control for Single Phase Inverter." Applied Mechanics and Materials 573 (June 2014): 143–49. http://dx.doi.org/10.4028/www.scientific.net/amm.573.143.

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—This The Pulse Width Modulation (PWM) DC-to-AC inverter has been widely used in many applications due to its circuit simplicity and rugged control scheme. It is however driven by a hard-switching pulse width modulation (PWM) inverter, which has low switching frequency, high switching loss, high electro-magnetic interference (EMI), high acoustic noise and low efficiency, etc. To solve these problems of the hard-switching inverter, many soft-switching inverters have been designed in the past. Unfortunately, high device voltage stress, large dc link voltage ripples, complex control scheme and so on are noticed in the existing soft-switching inverters. This proposed work overcomes the above problems with simple circuit topology and all switches work in zero-voltage switching condition. Comparative analysis between conventional open loop, PI and fuzzy logic based soft switching inverter is also presented and discussed. Keywords—Zero voltage switching, Inverter, Dc link, PI controller, Fuzzy logic system control ,Modulation strategy, Soft switching

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D, Gokulpriya, Kaushik B, Boobalakrishnan M, and Sakthivel A. "Pulse Width Modulation Inverter Control Methods-A Comprehensive Study." Journal of Electrical Engineering and Automation 5, no. 2 (2023): 252–75. http://dx.doi.org/10.36548/jeea.2023.2.008.

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Harmonics in electrical supply refers to the distortion of the normal electrical waveform due to the presence of frequencies that are multiples of the fundamental frequency. The presence of harmonics in electrical supply can lead to a number of problems, including: Overheating of equipment, Power quality issues, Extra energy consumption etc. This research aims to provide a cost-effective solution to reduce harmonics in three phase inverters and improve power factor without using any hardware components such as filters and multi-level inverters and by simply changing control pulses of the inverter switches. This research provides a comparison of three most popular inverter control techniques SPWM control, THPWM control and SVPWM control techniques of three phase inverters. All these techniques were compared with the help of MATLAB-SIMULINK and the best control technique with lower order harmonics and less power factor was determined.

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G., Raja, and Meganathan T. "FPGA Based PWM of Cascaded Multilevel Voltage Source Inverter." International Journal of Advance Research and Innovation 3, no. 1 (2015): 159–65. http://dx.doi.org/10.51976/ijari.311529.

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Multilevel inverters have grasped attention in the past few years as power converters in many applications. They are advantageous over the conventional two-level inverters because of the capability of reducing the lower order harmonic contents by increasing the number of levels. Many studies and research have been done for generation of modulating signals for multilevel inverters. Modulation signal generation methods for these inverters include staircase modulation, sine-triangle carrier modulation, space vector modulation etc. Various topologies of multilevel inverter provides several advantages including lower voltage stress, higher efficiency, lower EMI, better waveform and improved THD. This paper presents the development of Altium FPGA as a control circuit for generation of the digital pulse width modulation (DPWM) signal for the single-phase cascaded H-bridge multilevel inverter. The FPGA chip is chosen for the hardware implementation due to its ability to produce accurate results at a high computational speed. Counter based digital pulse width modulation (DPWM) for increased resolution without unnecessarily increasing the clock frequency is used. In addition to Altium Nanoboard FPGA, Xilinx System Generator/MATLAB software has been used for simulation and verification of the proposed circuit before implementation. The simulation and experimental results are in close agreement.

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M.V., Subramanyam. "Sinusoidal Pulse Wiedh Modulation Techniques." Advancement and Research in Instrumentation Engineering 2, no. 3 (2020): 1–6. https://doi.org/10.5281/zenodo.3609031.

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The five level inverter is most widely used inverter in medium and high voltage applications as it has many advantages compared higher level inverters. Modulation is the technique or process in which the characteristics of the carrier wave or signal such as amplitude, frequency and phase are changed in accordance with the instantaneous value of the original or message signal. . Modulation techniques are of two types they are continuous wave modulation and pulse modulation. When the carrier wave is a continuous in nature, the modulation is known as continuous wave modulation or analog modulation. At the point when the carrier wave is a pulse type waveform, the modulation process is known as pulse modulation. There are different Sinusoidal Pulse width Modulation techniques such as In Phase Disposition(IPD), Anti Phase Disposition(APD), Phase Opposition Disposition(POD), Phase shift(PS), Anti-Phase Shift(APS), Variable Frequency(VF), Anti-Variable Frequency(AVF) and Carrier Overlap(CO).The THD of different Sinusoidal Pulse width Modulation techniques are found as carrier frequency is varied and compared.

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Hussain, Attia, Seng Che Hang, Kheng Suan Freddy Tan, and Elkhateb Ahmad. "Mitigating the dead-time effects on harmonics spectrum of inverter waveform by the confined band VSFPWM technique." International Journal of Power Electronics and Drive System (IJPEDS) 12, no. 1 (2021): 295–303. https://doi.org/10.11591/ijpeds.v12.i1.pp295-303.

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The dead-time is necessary to be inserted between the gates drive pulses of the two power electronic switches in a one leg of any inverter to avoid a short circuit in the leg and the DC supply as well. However, adding the dead-time increases the low order harmonics of the output voltage/current waveform of the inverter. This paper investigates the positive effects of decreasing the pulse width modulation (PWM) drive pulses number per fundamental period on the current low order harmonics. In addition, this paper evaluates the impact of the confined band variable switching frequency pulse width modulation (CB-VSFPWM) technique on inverter performance in terms of dead-time mitigating, and consequenctely lowering the low order harmonics. CB-VSFPWM technique reduces the total harmonic distortion (THD) levels in the inverter output current as well. Theoretical analysis of the CBVSFPWM effectiveness in reducing the negative effect of the dead-time has explained in this study and confirmed by the MATLAB/Simulink simulation results.

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Hasabelrasul, Hashim, and Xiangwu Yan. "Comparison of Multicarrier PWM Techniques for Cascaded H-Bridge Multilevel Inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (2017): 861. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp861-868.

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One of the preferred choices of electronic power conversion for high power applications are multilevel inverters topologies finding increased attention in industry. Cascaded H-Bridge multilevel inverter is one of these topologies reaching the higher output voltage, power level and higher reliability due to its modular topology. Level Shifted Carrier Pulse Width Modulation (LSCPWM) and Phase Shifted Carrier Pulse Width Modulation are used generally for switching cascaded H-bridge (CHB) multilevel inverters. This paper compares LSCPWM and PSCPWM in terms of total harmonics distortion (THD) and output voltage among inverter cells. Simulation for 21-level CHB inverter is carried out in MATLAB/SIMULINK and simulation results are presented.

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Srinath, V., Man Mohan Agarwal, and D. K. Chaturvedi. "Analysis and simulation of a single-phase seven-level inverter controlled by modified sinusoidal PWM technique." International Journal of Modeling, Simulation, and Scientific Computing 12, no. 04 (2021): 2150024. http://dx.doi.org/10.1142/s1793962321500240.

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In this paper, a modified sinusoidal pulse width modulation (MSPWM) technique and a modified single-phase H-bridge seven-level inverter is proposed. The switching pulses for the proposed seven-level inverter are generated using a single triangular carrier waveform, a fully rectified sinusoidal signal, and three stepped reference signals (Uref1, Uref2 and Uref3). Using optimization technique, the magnitude of the stepped reference signal is determined so that the total harmonic distortion (THD) of the output voltage waveform is minimum and the fundamental component, RMS value of the voltage is improved for a given modulation index Ma as compared to the sinusoidal pulse width modulation (SPWM). By the implementation of the new scheme, the seven-level of the inverter output voltage level (+Vdc, +2Vdc/3, +Vdc/3, 0, −Vdc, −2Vdc/3, −Vdc) is obtained for any given modulation index. Similarly, if only two stepped reference signals are used then the inverter will act as a five-level inverter for any modulating index Ma. The proposed MSPWM and seven-level inverter are simulated on MATLAB/SIMULINK for R, R-L load and on a single-phase capacitor-start and capacitor-start-run Induction Motor.

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Pratomo, Leonardus Heru, F. Danang Wijaya, and Eka Firmansyah. "A Simple Strategy of Controlling a Balanced Voltage Capacitor in Single Phase Five-Level Inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 6, no. 1 (2015): 160. http://dx.doi.org/10.11591/ijpeds.v6.i1.pp160-167.

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The five-level inverter has been used for many applications in renewable energy systems. Even though its harmonic distortion was lower than the conventional two-level inverter. The five-level converter has some disadvantages such as increasing power semiconductor, complex pulse width modulation control methods, and problem with the voltage balancing of the capacitor. This paper aims to propose a modified five-level inverter based on sinusoidal pulse width modulation using phase shifted carrier to enhancing the capacitor voltage balancing. This modified five-level inverter reduces the overall cost and the complexity of the pulse width modulator. Thus making the proposed control system highly simple. The performance and its controller were validated by means of standard laboratory equipments. The analysis, simulation and implementation result showed better performance of five-level inverter.

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Hiendro, Ayong, and Ismail Yusuf. "Analisis Simulasi Inverter Multilevel Kaskade dengan Teknik Selective Harmonic Elimination Pulse Width Modulation." Jurnal Edukasi dan Penelitian Informatika (JEPIN) 7, no. 1 (2021): 18. http://dx.doi.org/10.26418/jp.v7i1.40892.

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Salah satu teknik pengendalian saklar-saklar semikonduktor daya dari inverter multilevel adalah menggunakan Pulse Width Modulation (PWM). Dari berbagai teknik PWM, Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) merupakan teknik yang andal dalam mengeliminasi harmonisa-harmonisa tingkat rendah. Tujuan dari makalah ini adalah menjabarkan proses perhitungan, perancangan dan simulasi inverter multilevel kaskade dengan menggunakan teknik SHEPWM. Pulsa-pulsa pensaklaran setiap saklar semikonduktor daya inverter dibangun berdasarkan sudut-sudut pensaklaran optimum agar komponen harmonisa tertentu dapat tereliminasi. Demikian pula gelombang tegangan AC yang dihasilkan dapat diprediksi bentuknya berdasarkan hasil rancangan. Selanjutnya simulasi komputer dilakukan dengan perantara perangkat lunak PSPICE. Analisis hasil simulasi terhadap inverter 9-level menunjukkan komponen harmonisa ke-3, 5 dan 7 tereliminasi sama sekali. Hasil ini sesuai dengan perhitungan dan perancangan secara teoritis.

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Rakesh, Shriwastava, Gosavi Sonali, S. Khule Shridhar, Hadpe Somnath, and P. Thakre Mohan. "A novel PWM technique for reduced switch count multilevel inverter in renewable power applications." International Journal of Applied Power Engineering 12, no. 1 (2023): 1~12. https://doi.org/10.11591/ijape.v12.i1.pp1-12.

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This paper described a novel pulse width modulation (PWM) technique in reduced switch count multilevel inverter (MLI) for renewable power applications. Therefore, the proposed technique finds a better solution in the multilevel inverters used for improving power quality, efficiency and reduction of switching and conduction losses. It produces a smoother sinusoidal output waveform with reduced total harmonic distortion (THD) using different modulation technique. The novel PWM technique consists of nearest level control (NLC) and level shift pulse width modulation (LSPWM). Normally semiconducting devices are added for increasing number of levels. It affects the power quality and efficiency due to losses. In this work, MLI topology with reduced number of switches count for NLC and LSPWM is presented. The single-phase and three-phase inverter configuration is used in proposed mythology. Detailed simulation results for 7-level inverter of single and three-phase inverters are presented in this paper. It is observed that NLC method is better efficiency and reduced THD than LSPWM for better utilization in renewable power applications.

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Meesala, Venkateswarlu, Satheesh Gopisetti, and Sujatha Peddokotla. "Modified SPWM technique for single phase variable voltage nine level inverter for PV system." Modified SPWM technique for single phase variable voltage nine level inverter for PV system 14, no. 4 (2023): 2179–82. https://doi.org/10.11591/ijpeds.v14.i4.pp2173-2182.

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Multilevel inverters are widely popular because they boost the overall staging of the network with low harmonic distortion, less strain, and simply create highest possible development in industrial and electrical vehicle applications. Here a hybrid multilevel inverter having few switches compare to traditional multi-level inverters has been implemented. It has the capability to operate as a 3-level, 5-level, 7-level and 9-level inverter with different magnitudes of output voltage by varying the modulation index without changing of circuit topology and switching sequences. A new variable amplitude phase opposition disposition sinusoidal pulse width modulation (VAPODPWM) technique is proposed to control the inverter. In this concept unsymmetrical carrier wave form, i.e. A single triangular wave is divided into three triangular waves of different magnitude was chosen. it reduces the volt-sec of output due to that it gives less total harmonic distortion (THD) compare to other conventional space pulse width modulation (SPWM) techniques and conventional space vector pulse width modulation (CSVPWM) control techniques. The ease of conversion capability with less count of switches and operation with less THD shows the effectiveness of the converter. The converter is simulated by using MATLAB/Simulink and results are discussed.

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Sreelakshmi, Sanka, Machineni Sanjeevappa Sujatha, and Jammy Ramesh Rahul. "Multi-level inverter with novel carrier pulse width modulation technique for high voltage applications." Indonesian Journal of Electrical Engineering and Computer Science 26, no. 2 (2022): 667. http://dx.doi.org/10.11591/ijeecs.v26.i2.pp667-674.

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The present work deals with multilevel inverters (MLI) with modified carrier pulse width modulation technique and its application, especially in solar-based applications due to its modularity in structure and suitability for medium or high-power applications. Several multilevel inverters are introduced for various applications. One of the drawbacks of these inverters is high total harmonic distortion (THD) value in the output which impacts the power quality. The main objective of this work is to improve the power quality, thereby increasing the life and performance of the overall system at the consumer side. The most popular and compact cascaded multilevel DC-link inverter (CMDCLI) is considered for study and employed for 11-level operation. In general, sinusoidal pulse width modulation (SPWM) technique is used for control of inverter. However, the present work proposes a modified carrier-based hybrid pulse width modulation (HPWM) technique and has been tested with CMLDCLI. This novel technique compares the THD performance results with normal carrier wave considering R-L load. The results are analyzed in MATLAB environment and are validated with experimental results.

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Setiyono, Setiyono. "Analisis Pembangkit Pulsa Penyalaan Inverter 3 Fasa Menggunakan Space Vector Pulse Width Modulation (SVPWM)." Electrician : Jurnal Rekayasa dan Teknologi Elektro 17, no. 2 (2023): 169–77. http://dx.doi.org/10.23960/elc.v17n2.2419.

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Paper ini menyajikan algoritma pembangkit pulsa kendali untuk mengatur kinerja saklar inverter sebagai driver motor induksi 3 fasa dengan metode Space Vector Pulse Width Modulation (SVPWM) melalui simulasi pemodelan menggunakan tools matlab Simulink. Deretan pulsa penyalaan dihasilkan melalui kalkulasi beberapa persamaan matematik yaitu perhitungan sinyal referensi, transformasi tegangan 3 fasa abc ke system dua dimensi dq, sudud sector , pola waktu penyalaan saklar inverter, dan pembanding sinyal pembawa segitiga dengan sinyal modulator. Kinerja saklar inverter membentuk 8 kombinasi keadaan dan diilustrasikan memiliki 6 buah sector yang terpisah 60 derajat antar sector. Inverter dua level yang dibangun menggunakan 3 buah pasang saklar semikonduktor MOSFET. Disain simulasi diharapkan dapat dijadikan bahan acuan para peneliti untuk di implementasikan menjadi peralatan pengendalian mesin . Pemodelan ini juga digunakan untuk mengetahui dan menganalisis kendali penyalaan saklar inverter , pengaruh indeks modulasi terhadap kinerja saklar, dan pola waktu penyalaan pulsa tiap tiap pasangan saklar inverter. Hasil simulasi menjelaskan bentuk gelombang pulsa penyalaan yang dibangun menghasilkan deretan pulsa terkendali yang dapat menjalankan performa saklar inverter tiga fasa

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Nada, Mohamed El-Naggar, Adel Esmaeel Mohamed, and Abu-Zaid Salama. "Comparative performance of modular with cascaded H-bridge three level inverters." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 4 (2023): 3847–56. https://doi.org/10.11591/ijece.v13i4.pp3847-3856.

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The conventional two-level inverter becomes no longer has the ability to cope with the high-power requirement, so this paper discusses two very common topologies of multilevel inverter like modular multilevel converter (MMC) and cascaded H-bridge (CHB) multilevel inverter for induction motor drive applications. This work attempts to investigate the comparison between MMC and CHB. The comparison is done in aspects of the configuration, concept of operation, advantages and disadvantages, the comparison is also considering output voltage (line to line) waveform, total harmonic distortion (THD) of the output line voltage waveform and the current drawn by both inverters. The performance of the inverters under carrier-based pulse width modulation (PWM) technique and mainly in-phase disposition (IPD), level shifted pulse width modulation is viewed. The paper discusses the comparison between the two multilevel inverters (MLIs) with motor drive applications especially induction motor. The operation of the motor is studied under certain value of load torque. The simulation results for the induction motor with the two inverters (modular multilevel and Cascaded H-bride) for three numbers of levels using MATLAB/Simulink are provided). The obtained results are encouraging and promising especially in the improvement of the THD% results.

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Arun, Vijayakumar, Thunga Nageswara Prasad, Sundaramoorthy Prabhu, and Nagarajan Ashokkumar. "Nine level switched capacitor inverter with level shifted pulse width modulation approach." International Journal of Applied Power Engineering (IJAPE) 13, no. 1 (2024): 130. http://dx.doi.org/10.11591/ijape.v13.i1.pp130-137.

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This article proposes a nine-level switched capacitor inverter (NLSCI) with a minimum number of switches. In recent years, switching capacitor (SC) multilevel inverters (MLIs) have become one of the most common inverter topologies. These proposed nine level switched capacitor inverter (NLSCI) do not deserve any external control unit for capacitor control. Since, the charging and discharging of the capacitors are controlled by the on and off states of switches. Furthermore, by employing fewer switches and DC voltage sources, the suggested design produces a greater amount of resultant voltage. Additionally, pulse width modulation (PWM) is recommended as a method to enhance output quality and power level quality. The switched-capacitor two-output multilevel inverter (SCMLI) structure's viability and effectiveness have been demonstrated using MATLAB simulation.

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Arun, Vijayakumar, Thunga Nageswara Prasad, Sundaramoorthy Prabhu, and Nagarajan Ashokkumar. "Nine level switched capacitor inverter with level shifted pulse width modulation approach." International Journal of Applied Power Engineering (IJAPE) 13, no. 1 (2023): 130–37. https://doi.org/10.11591/ijape.v13.i1.pp130-137.

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This article proposes a nine-level switched capacitor inverter (NLSCI) with a minimum number of switches. In recent years, switching capacitor (SC) multilevel inverters (MLIs) have become one of the most common inverter topologies. These proposed nine level switched capacitor inverter (NLSCI) do not deserve any external control unit for capacitor control. Since, the charging and discharging of the capacitors are controlled by the on and off states of switches. Furthermore, by employing fewer switches and DC voltage sources, the suggested design produces a greater amount of resultant voltage. Additionally, pulse width modulation (PWM) is recommended as a method to enhance output quality and power level quality. The switched-capacitor two-output multilevel inverter (SCMLI) structure's viability and effectiveness have been demonstrated using MATLAB simulation.

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Roy, Debanjan, Madhu Singh, and Tapas Roy. "A Novel Approach for Space Vector Based PWM Algorithm for Diode Clamped Three level VSI Fed Induction Motor Drive." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 4 (2017): 1534. http://dx.doi.org/10.11591/ijpeds.v8.i4.pp1534-1547.

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Performance of a voltage source inverter depends on pulse width modulation algorithms. Various algorithms exist for conventional space vector as well as space vector based bus clamped pulse width modulation for multilevel inverter in the literature. In this paper appropriate region selection algorithm for conventional space vector pulse width modulation (CSVPWM) and bus clamped pulse width modulation (BCPWM) techniques are proposed for diode clamped three level voltage source inverter. The proposed techniques are implemented on a three level voltage source inverter fed induction motor drive for open loop operation. The schemes are simulated in MATLAB/SIMULINK environments. The merit of proposed region selection algorithm is tested and verified through simulation result. Further performance comparisons between SVPWM and BCPWM for different modulation index are discussed.

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Hidayat, Ikhsan, Al Mahdali, and Moh Afandy. "Analisis Perbandingan Inverter Satu Phasa PWM dan SPWM dengan Trafo." Jambura Journal of Electrical and Electronics Engineering 4, no. 1 (2022): 27–32. http://dx.doi.org/10.37905/jjeee.v4i1.11900.

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Riset ini membandingkan masukan sinyal PWM dan SPWM untuk mendapatkan THD yang rendah, dan juga terkait efek dari teknik modulasi dan jumlah pulsa pada disipasi daya rendah yang terdapat pada inverter satu phasa. Inverter satu phasa diberikan masukan pulsa menggunakan PWM (Pulse Width Modulation), dan SPWM (Sinusoidal Pulse Width Modulation) dalam bentuk gelombang persegi (kotak) yang dipasangkan dengan filter LCL yang sesuai, kemudian menghasilkan desain rangkaian inverter yang memiliki THD (Total Harmonic Distortion) yang rendah dan efisiensi tinggi. Transformator digunakan untuk meningkatkan tegangan sumber masukan yang semula 48 Volt menjadi 220Volt (Untuk alat elektronik skala rumahan) juga disebutkan dalam penelitian ini. Hasil percobaan simulasi dari analisis perbandingan antara inverter satu phasa PWM dengan inverter satu phasa SPWM maka didapatkan bahwa model inverter teknik PWM (switching gelombang kotak) dapat meminimalisir harmonisa hingga mendekati 1.8 %.

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Khaled, A. Mahafzah, M. Negry Raneem, A. Obeidat Mohammad, and Alsalem Hesham. "An improved modulation technique suitable for a three level flying capacitor multilevel inverter." International Journal of Electrical and Computer Engineering (IJECE) 14, no. 3 (2024): 2522–32. https://doi.org/10.11591/ijece.v14i3.pp2522-2532.

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This research paper introduces an innovative modulation technique for controlling a 3-level flying capacitor multilevel inverter (FCMLI), aiming to streamline the modulation process in contrast to conventional methods. The proposed simplified modulation technique paves the way for more straightforward and efficient control of multilevel inverters, enabling their widespread adoption and integration into modern power electronic systems. Through the amalgamation of sinusoidal pulse width modulation (SPWM) with a high-frequency square wave pulse, this controlling technique attains energy equilibrium across the coupling capacitor. The modulation scheme incorporates a simplified switching pattern and a decreased count of voltage references, thereby simplifying the control algorithm.

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Mohd, Ruddin Ab Ghani, Farah Nabil, Lazi Jurifa, et al. "Investigation Study of Three-Level Cascaded H-Bridge Multilevel Inverter." TELKOMNIKA Telecommunication, Computing, Electronics and Control 15, no. 1 (2017): 125–37. https://doi.org/10.12928/TELKOMNIKA.v15i1.4749.

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This paper analyzed three-level Cascaded H-bridge Multilevel Inverter (CHMLI) utilizing two modulation techniques namely Sinusoidal Pulse Width Modulation (SPWM) and Space Vector Pulse Width Modulation (SVPWM). The performance and the output of CHMLI in terms of Total Harmonic Distotion (THD) % and circuits complexity were compared. The simulations models were constructed using MATLAB/SIMULINK. The results showed the CHMLI produced the lowest THD contents and utilized fewer components. Moreover, the SVPWM produced less THD than SPWM.

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Symbat, Manat, Yugay Vyacheslav, and Kaliaskarov Nurbol. "Analysis of power losses in multilevel pulse-width modulation inverters." Eastern-European Journal of Enterprise Technologies 2, no. 5 (116) (2022): 31–42. https://doi.org/10.15587/1729-4061.2022.252771.

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The paper describes the types of multilevel pulse-width modulation, as well as methods for obtaining control signals for the inverter power switches for each of the types. The dependence of the harmonic composition of the output voltage of the inverter on the number of levels and the switching frequency of the keys of each level is analyzed. By modeling, the dependences of the transistor junction temperature on the number of voltage levels, switching frequency and load power are determined. The power switching system of an inverter with phase-shifted pulse-width modulation in high-frequency mode is analyzed, the dependence of switching losses on inductance is investigated. The ways of solving or improving the control systems of the conductivity losses of the converter flowing through the primary winding of a high-frequency transformer during the free-running period are formulated. The importance of this direction for the technological development of the economy, where efficiency improvements can lower individual utility bills, create jobs, and help stabilize electricity prices and volatility is shown. The most important stage of inverter design is called structural synthesis stage – the choice of topology and modulation algorithm that will ensure the greatest efficiency of the device. In addition, since the efficiency and reliability of inverters depend on the efficiency and reliability of secondary electricity consumers, the task of optimizing inverter circuits is a cornerstone for the effective development of technology and economy. The maximum dynamic power loss at a PWM frequency of 1 kHz reaches only 80 watts compared to the static power loss value of 800 watts

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BOUDOUDA, AIMAD. "POWER SPECTRAL DENSITY OF DUAL RANDOMIZED DISCONTINUOUS PULSE WIDTH MODULATION." REVUE ROUMAINE DES SCIENCES TECHNIQUES — SÉRIE ÉLECTROTECHNIQUE ET ÉNERGÉTIQUE 68, no. 2 (2023): 132–38. http://dx.doi.org/10.59277/rrst-ee.2023.68.2.3.

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This paper addresses the spectral characteristics of a carrier-based dual randomized discontinuous pulse width modulation (DRDPWM) technique for reducing conducted EMI and switching losses in three-phase voltage source inverters. It combines two simple random schemes, random carrier frequency modulation (RCF-DPWM) and random pulse position modulation (RPP-DPWM). First, the modulating principle of the DRDPWM is presented. Then, the analytical expressions of power spectral density (PSD) that characterize the output voltage of the three-phase inverter are derived. Analytical and simulation results show the effectiveness of PSD spreading of the DRDPWM. Finally, experimental results verify the analytical and simulation results and prove the effectiveness of the DRDPWM scheme in spreading the spectrum compared to simple schemes (RPP-DPWM and RCF-DPWM) and conventional scheme DPWM.

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Journal articles on the topic 'Pulse width modulation inverter'

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