Journal articles: 'Three-phase cascaded multilevel inverter'

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Qi, Xiaojing, and Jianyong Zheng. "VSG Control for Cascaded Three-Phase Bridge Based Battery Inverter." World Electric Vehicle Journal 14, no. 8 (2023): 203. http://dx.doi.org/10.3390/wevj14080203.

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With the increasing number of new energy sources connected to the grid, the unbalanced output of three-phase grid-connected inverters and the lack of no inertia and damping characteristics in the traditional microgrid control system will seriously affect the stability of voltage, frequency, and power angle for microgrids. This paper proposes a novel cascaded three-phase bridge inverter topology for the battery system used for the electric vehicle. Compared with traditional cascaded H-bridge inverters, the proposed multilevel inverter can achieve self-adaptive balance for three phases. The mathematical model of a cascaded three-phase bridge inverter is established in this paper. Based on the voltage and current equations of a multilevel inverter, a new modulation strategy named carrier phase-shifted-distributed pulse width modulation (CPSD-PWM) was developed, which is more suitable for cascaded three-phase bridge inverters. The harmonic analytic equations of carrier phase-shifted pulse width modulation (CPS-PWM) and CPSD-PWM are constructed by the double Fourier analysis method. Compared with the traditional PWM modulation strategy, the CPSD-PWM can reduce the output harmonics and improve the balance of the three-phase output, which can realize the three-phase adaptive balance in the cascaded three-phase bridge inverter. This paper develops a cascaded three-phase bridge multilevel power converter system based on the virtual synchronous generator (VSG) control strategy. The voltage and frequency of inverter output can be accurately controlled in both island mode and grid-connected mode through active power-frequency regulation and reactive power–voltage regulation, and the stability of primary frequency regulation for the multilevel microgrid inverter can be improved by collaborative optimization of virtual inertia and virtual damping. The CPSD-PWM modulation strategy and VSG control strategy are verified by the simulation results and experimental data for the cascaded three-phase bridge inverter.

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Sathish Kumar, S., R. Ramkumar, S. Sivarajeswari, D. Ramya, T. Subburaj, and Martin Sankoh. "Performance Enhancement of a Three Phase Boost-Cascaded Fifteen Level Inverter Using the PI Controller." Mathematical Problems in Engineering 2022 (May 19, 2022): 1–17. http://dx.doi.org/10.1155/2022/3888571.

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Photovoltaic power generation is a potential alternative energy source that offers several benefits over other alternative energy sources such as wind, sun, ocean, biomass, geothermal, and so on. Multilevel inverters are essential for power conversion in solar power generation. These multilevel inverters employ three distinct topologies: diode-clamped (neutral-point clamped) inverter, capacitor-clamped (flying capacitor) inverter, and cascaded H-bridge multilevel inverter. The cascaded H-bridge multilevel inverter is more appropriate for photovoltaic applications than the other two topologies. The proposed system asymmetrical cascaded multilevel inverter (ACMLI) is energized using a photovoltaic system (PV). A three-phase cascaded H-bridge fifteen-level inverter for grid-connected solar systems is given in this study utilizing a proportional integral controller. The harmonic distortion was removed using a multicarrier pulse width modulation method. The MATLAB/Simulink is used to simulate the performance of a three-phase cascaded H-bridge fifteen-level inverter in terms of harmonic content and number of switches. To test the performance of the designed system, a hardware prototype was created. From the obtained results, the proposed method reduces the switch count, harmonic distortion, and rejects the external disturbances of input and output variables.

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Gangadhara, Nayana, and Savita D. Torvi. "Harmonic reduction techniques in renewable energy distribution systems using cascaded multilevel inverters: a comparative analysis." International Journal of Power Electronics and Drive Systems 16, no. 1 (2025): 76–85. https://doi.org/10.11591/ijpeds.v16.i1.pp76-85.

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Penetration of renewable energy in distribution generation increases power quality in the output. The harmonics inherent in the inverters are a major contributor to the power quality issues in the distribution system. Multilevel inverters are used to get rid of the harmonics inherent in the inverter output. Among the multilevel inverter topology cascaded multilevel inverters have taken center stage due to their simple topology and control with lesser components. This paper reviews different multilevel inverter topologies that have led to cascaded multilevel inverter topology and applies pulse width modulation (PWM) techniques to the topology. Phase disposition PWM technique is applied on the cascaded H-bridge multilevel inverter (MLI) topology for 5-level, 7-level, and 9-level inverter topologies. The total harmonic distortion (THD) obtained for these topologies is compared with and without the use of an LC filter in the inverter output. PWM techniques including phase disposition, for five-level, seven-level, and nine-level MLI methods are applied on the cascaded multilevel inverter and results are compared for harmonic reduction in the inverter output.

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Tan, Yee Chyan, M. Aizuddin Yusof, Syed Idris Syed Hassan, Siok Lan Ong, and Jenn Hwai Leong. "Three-Phase Asymmetric Multilevel Inverter Topologies with Better Charge Balancing." Applied Mechanics and Materials 785 (August 2015): 182–87. http://dx.doi.org/10.4028/www.scientific.net/amm.785.182.

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Cascaded H-bridge multilevel inverter is among the most preferred topology in solar systems. While traditional asymmetric cascaded H-bridge multilevel inverter is easy to achieve higher number of output voltage levels compared to traditional symmetric cascaded H-bridge multilevel inverter, charge balancing between the voltage sources remains a challenge for asymmetric cascaded H-bridge multilevel inverter. This drawback results in unsteady DC voltage levels due to unbalanced power drawn from each voltage sources. Besides that, in battery powered applications, unbalanced power drawn results in unequal discharged in the batteries. In this paper, two three-phase asymmetric cascaded H-bridge multilevel inverter topologies are proposed which offer easier in terms of modularity while maintaining the ease in charge balancing control. The performance of these two proposed topologies with charge balance control has been evaluated using PSIM software.

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Patel, Satish D. "Simulation Based on High Switching Frequency H-Bridge 5-Level Multilevel Inverter Using Level Shifted In Phase Disposition (IPD) Modulation." International Journal for Research in Applied Science and Engineering Technology 13, no. 2 (2025): 569–75. https://doi.org/10.22214/ijraset.2025.66891.

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Analytical solutions of Pulse Width Modulation (PWM) strategies for multilevel Cascaded H-Bridge inverters are presented. These solutions show that the Phase Disposition (PD) PWM strategy for Cascaded H-Bridge Multilevel inverters are presented, When the carrier frequencies are adjusted to achieve the same number of total switch transitions for each inverter over one fundamental cycle. From this understanding, a method is proposed to apply the harmonically superior Phase Disposition (PD) PWM strategy for NPC inverters to Cascaded inverters, to achieve improved harmonic performance for the modulation of cascade inverters. Both theoretical and simulated results are compared and in this paper are archived result on a Simulation Based on High Swishing frequency H-Bridge Multilevel Inverter Using phase shifted Modulation using Matlab software.

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Wang, Sheng, Jia Hua Zhong, Shao Dong Wang, and Jin Ping He. "A Novel Three Phase Cascaded Multilevel Inverter." Advanced Materials Research 646 (January 2013): 249–58. http://dx.doi.org/10.4028/www.scientific.net/amr.646.249.

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Based on the theory of H-bridge multilevel converter, the structure of a three phase cascaded multilevel inverter (LVCMI) and its control strategy are proposed in this paper. Several standard three-phase bridges can be reconnected into a new single three-phase bridge at ac-side. Simulation results show that such topological structure can increase the output voltage capacity and reduce the THD. It can be used as an inverter or rectifier in three phase system. In theory, it can be cascaded unlimitedly. The more cascaded, the higher output voltage and the lower THD. Experimental results of LVCMI with 3-module verified the feasibility of the proposed inverter.

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Gangadhara, Nayana, and Savita D. Torvi. "Harmonic reduction techniques in renewable energy distribution systems using cascaded multilevel inverters: a comparative analysis." International Journal of Power Electronics and Drive Systems (IJPEDS) 16, no. 1 (2025): 76. https://doi.org/10.11591/ijpeds.v16.i1.pp76-85.

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Penetration of renewable energy in distribution generation increases power quality in the output. The harmonics inherent in the inverters are a major contributor to the power quality issues in the distribution system. Multilevel inverters are used to get rid of the harmonics inherent in the inverter output. Among the multilevel inverter topology cascaded multilevel inverters have taken center stage due to their simple topology and control with lesser components. This paper reviews different multilevel inverter topologies that have led to cascaded multilevel inverter topology and applies pulse width modulation (PWM) techniques to the topology. Phase disposition PWM technique is applied on the cascaded H-bridge multilevel inverter (MLI) topology for 5-level, 7-level, and 9-level inverter topologies. The total harmonic distortion (THD) obtained for these topologies is compared with and without the use of an LC filter in the inverter output. PWM techniques including phase disposition, for five-level, seven-level, and nine-level MLI methods are applied on the cascaded multilevel inverter and results are compared for harmonic reduction in the inverter output.

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Šapurov, Martynas, Algirdas Baskys, Raimondas Pomarnacki, et al. "Cascaded Multilevel Inverter-Based Asymmetric Static Synchronous Compensator of Reactive Power." Symmetry 14, no. 3 (2022): 483. http://dx.doi.org/10.3390/sym14030483.

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The topology of the static synchronous compensator of reactive power for a low-voltage three-phase utility grid capable of asymmetric reactive power compensation in grid phases has been proposed and analysed. It is implemented using separate, independent cascaded H-bridge multilevel inverters for each phase. Every inverter includes two H-bridge cascades. The first cascade operating at grid frequency is implemented using thyristors, and the second one—operating at high frequency is based on the high-speed MOSFET transistors. The investigation shows that the proposed compensator is able to compensate the reactive power in a low-voltage three-phase grid when phases are loaded by highly asymmetrical reactive loads and provides up to three times lower power losses in the compensator as compared with the situation when the compensator is based on the conventional three-level inverters implemented using IGBT transistors.

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Iwaszkiewicz, J., and A. Muc. "Five-phase Inverter Control Based on the Haar Wavelet Transform." Renewable Energies, Environment and Power Quality Journal 2 (July 2024): 193–201. http://dx.doi.org/10.24084/reepqj24.380.

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The paper presents a novel five-phase cascade inverter control method based on the Haar wavelets transform. The inverter is built from two or three two level inverters in every phase. The instantaneous value of the output voltage of the cascaded inverter is composed as a synthesis of the selected Haar wavelets. An analytical system of determining the best possible set of Haar orthogonal wavelets is presented. On the basis of the applied Haar wavelets, the control signals of the inverter switches are calculated. The cascaded five-phase inverter with a star connected resistive-inductive load was tested during simulation tests. The results and discussion of main proprieties are presented. Keywords. Wavelets, Haar wavelet transform, wavelet waveforms synthesis, five-phase multilevel inverter.

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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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Pooja, B. Puse, and R. Bhasme N. "Performance Analysis of Three Phase Multilevel Inverter with SPWM Techniques used in Railway System." International Journal of Engineering and Advanced Technology (IJEAT) 9, no. 3 (2020): 2964–6971. https://doi.org/10.35940/ijeat.A1449.029320.

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The medium voltage & high power converters are used in electrical railway system because of its high efficiency. Due to the use of heavy load in the railway system, conventional inverters causes power quality issues such as harmonic distortion, low power factor, etc. In this paper, new cascaded multilevel inverter (MLI) using cascaded H-bridge is introduced. The advantage of the proposed method is to mitigate power semiconductor switches in number which reduces the cost of the circuit as well as the complexity. The analysis and evaluation of various Sinusoidal Pulse Width Modulation (SPWM) Methods with different levels of an inverter has been modeled and simulated by using MATLAB/Simulink.

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Widagdo, Reza Sarwo, Puji Slamet, and Balok Hariadi. "Performance Analysis of Three Phase Cascaded H-Bridge Multilevel Inverter Design for Solar Power Plant Optimization." Jambura Journal of Electrical and Electronics Engineering 7, no. 1 (2025): 113–17. https://doi.org/10.37905/jjeee.v7i1.28035.

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An inverter is an electrical device that converts direct current (DC) into alternating current (AC). Typically, a standard inverter operates at three voltage levels: +Vdc, -Vdc, and 0. However, a multilevel inverter consists of several smaller inverters connected in a series to produce multiple voltage levels at the output. The primary advantage of this type of inverter lies in its ability to produce a much lower harmonic distortion compared to traditional, non-multilevel inverters. Additionally, the switching components of a multilevel inverter operate at lower frequencies, which makes it more suitable for highpower applications. This research focuses on a threephase cascaded multilevel inverter, specifically generating output waveforms with up to seven levels. The study involves conducting experiments using RL loads, to observe how these variations affect the output waveforms and their harmonic distortions. The result, THDi values are much lower, with the 3rd harmonic contributing 0.02%, the 5th contributing 0.006%, the 7th contributing 0.004%, the 9th contributing 0.002%, the 11th contributing 0.002%, and the 13th harmonic contributing just 0.001%. These results suggest that the voltage harmonic more significant harmonic distortion than the current, particularly at the 13th harmonic order. This increase highlights the effect of inductive loads on the performance of the inverter, particularly in terms of harmonic content. These findings are crucial for optimizing multilevel inverters in practical applications, ensuring improved performance and efficiency.

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Tran, Quang-Tho, and Vinh-Quan Nguyen. "Reduction of common mode voltage for grid-connected multilevel inverters using fuzzy logic controller." International Journal of Power Electronics and Drive Systems (IJPEDS) 14, no. 2 (2023): 698. http://dx.doi.org/10.11591/ijpeds.v14.i2.pp698-707.

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Cascaded multilevel three-phase inverters are increasing in industries of electric drives and renewable energy because of their large capacity and suffering from high voltage shock. However, the high magnitude of common mode voltage is one of the drawbacks. Thus, the techniques of modulation and control in these multilevel inverters significantly affect the power quality of the output voltage of inverters. This paper presents a technique using fuzzy logic technique for grid-connected cascaded multilevel 3-phase inverters. This technique has completely removed the current controllers and the conventional modulation using carriers. It also helps reduce the magnitude of common mode voltage and increase the dynamic response. Moreover, the ability to reduce harmonics and switching count also helps decrease the switching loss of inverter. The simulation results on a grid-connected cascaded 5-level 3-phase inverter have validated the effectiveness of the presented technique compared with that of the conventional method using phase opposition disposition (POD) and PI current controllers.

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Quang-Tho, Tran, and Nguyen Vinh-Quan. "Reduction of common mode voltage for grid-connected multilevel inverters using fuzzy logic controller." International Journal of Power Electronics and Drive Systems 14, no. 02 (2023): 698~707. https://doi.org/10.11591/ijpeds.v14.i2.pp698-707.

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Cascaded multilevel three-phase inverters are increasing in industries of electric drives and renewable energy because of their large capacity and suffering from high voltage shock. However, the high magnitude of common mode voltage is one of the drawbacks. Thus, the techniques of modulation and control in these multilevel inverters significantly affect the power quality of the output voltage of inverters. This paper presents a technique using fuzzy logic technique for grid-connected cascaded multilevel 3-phase inverters. This technique has completely removed the current controllers and the conventional modulation using carriers. It also helps reduce the magnitude of common mode voltage and increase the dynamic response. Moreover, the ability to reduce harmonics and switching count also helps decrease the switching loss of inverter. The simulation results on a grid-connected cascaded 5-level 3-phase inverter have validated the effectiveness of the presented technique compared with that of the conventional method using phase opposition disposition (POD) and PI current controllers.

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Janiga, Srinivas Rao, and Suresh Kumar Tummala. "7-Level Semi Cross Switched Multilevel Inverter Fed Induction Motor Drive." E3S Web of Conferences 184 (2020): 01075. http://dx.doi.org/10.1051/e3sconf/202018401075.

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Multilevel inverters have more prominent features than 2-level inverter due to various advantages like voltage quality, low EMI etc. The semi cross switched multilevel converter topology need less number of semiconductor switches compared to cascaded H-bridge multilevel inverter, and can be implemented to any number of voltage levels. The operating modes of 7-level semi cross switched multi level inverter are discussed. Three phase seven level inverter fed induction motor is implemented in MATLAB/SIMULINK.

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Hamza, Amar, Sara Altahir, and Xiangwu Yan. "Synchronverter Control for Parallel Operation of Cascaded H-Bridge Inverter." Indonesian Journal of Electrical Engineering and Computer Science 2, no. 1 (2016): 107. http://dx.doi.org/10.11591/ijeecs.v2.i1.pp107-114.

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A 21-levels cascaded H-bridge multilevel inverter topology based on three-phase voltage source inverter has been proposed as a superior replacement for conventional two-level in high voltage applications. In this work we have presented the usage of the new technique called virtual synchronous generator based synchronverter model to operate the multilevel inverter as synchronous generator, and to share active and reactive power automatically in case of parallel operated inverters of the same type. Carrier-based PWM is used to control each phase leg of the cascaded H-bridge multilevel inverter. This carrier-based PWM scheme is derived from the carrier phase disposition pulse width modulation strategy. By aid of MATLAB/Simulink package a simulation experiment is established to verify the performance of the proposed technique.

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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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Razia Sultana, W., Sarat Kumar Sahoo, Kavuri Seshasai Kiran, Gangireddytarakarajasekhar Reddy, and Pasam Harshavardhan Reddy. "Predictive Control of Three-Phase Cascaded Multilevel Inverter." Indian Journal of Science and Technology 8, S2 (2015): 45. http://dx.doi.org/10.17485/ijst/2015/v8is2/58413.

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Meraj, Sheikh Tanzim, Nor Zaihar Yahaya, Kamrul Hasan, et al. "Three-Phase Six-Level Multilevel Voltage Source Inverter: Modeling and Experimental Validation." Micromachines 12, no. 9 (2021): 1133. http://dx.doi.org/10.3390/mi12091133.

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This research proposes a three-phase six-level multilevel inverter depending on twelve-switch three-phase Bridge and multilevel DC-link. The proposed architecture increases the number of voltage levels with less power components than conventional inverters such as the flying capacitor, cascaded H-bridge, diode-clamped and other recently established multilevel inverter topologies. The multilevel DC-link circuit is constructed by connecting three distinct DC voltage supplies, such as single DC supply, half-bridge and full-bridge cells. The purpose of both full-bridge and half-bridge cells is to provide a variable DC voltage with a common voltage step to the three-phase bridge’s mid-point. A vector modulation technique is also employed to achieve the desired output voltage waveforms. The proposed inverter can operate as a six-level or two-level inverter, depending on the magnitude of the modulation indexes. To guarantee the feasibility of the proposed configuration, the proposed inverter’s prototype is developed, and the experimental results are provided. The proposed inverter showed good performance with high efficiency of 97.59% following the IEEE 1547 standard. The current harmonics of the proposed inverter was also minimized to only 5.8%.

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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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Ahmad, Marwan E., Ali H. Numan, and Dhari Y. Mahmood. "Enhancing performance of grid-connected photovoltaic systems based on three-phase five-level cascaded inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 4 (2021): 2295. http://dx.doi.org/10.11591/ijpeds.v12.i4.pp2295-2304.

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Multilevel inverters play an important role in power converters due to their good advantages. The cascaded H-bridge inverter is one of the most prominent and most suitable multilevel inverters in PV systems. Each H-bridge has a separate photovoltaic (PV) array as an independent direct current (DC) source. This paper introduces a three-phase cascaded H-bridge inverter with five levels connected to the grid to improve the performance and efficiency of the photovoltaic system. In the proposed system, each PV group has MPPT to extract the maximum power point from the PV group at certain irradiation and temperature and also to mitigate the mismatch that causes in the imbalance transmitted power from inverter to the main grid. The proposed control scheme with modulation compensation was used, and the system was simulated in MATLAB/Simulink with two different scenarios. The simulation results demonstrate the effectiveness of the proposed connection in minimizing the total harmonic distortion (THD) to acceptable limit, low overshoot, and fast-tracking to the desired value.

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Marwan, E. Ahmad, H. Numan Ali., and Y. Mahmood Dhari. "Enhancing performance of grid-connected photovoltaic systems based on three-phase five-level cascaded inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 4 (2021): 2295–304. https://doi.org/10.11591/ijpeds.v12.i4.pp2295-2304.

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Multilevel inverters play an important role in power converters due to their good advantages. The cascaded H-bridge inverter is one of the most prominent and most suitable multilevel inverters in PV systems. Each H-bridge has a separate photovoltaic (PV) array as an independent direct current (DC) source. This paper introduces a three-phase cascaded H-bridge inverter with five levels connected to the grid to improve the performance and efficiency of the photovoltaic system. In the proposed system, each PV group has MPPT to extract the maximum power point from the PV group at certain irradiation and temperature and also to mitigate the mismatch that causes in the imbalance transmitted power from inverter to the main grid. The proposed control scheme with modulation compensation was used, and the system was simulated in MATLAB/Simulink with two different scenarios. The simulation results demonstrate the effectiveness of the proposed connection in minimizing the total harmonic distortion (THD) to acceptable limit, low overshoot, and fast-tracking to the desired value.

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Kaddour, Benyoucef, Noureddine Henini, Abdelhalim Tlemçani, and Mohamed Allali. "Efficient control of three-phase cascaded multilevel Z-Source inverter using SHEPWM technique." STUDIES IN ENGINEERING AND EXACT SCIENCES 5, no. 1 (2024): 334–53. http://dx.doi.org/10.54021/seesv5n1-020.

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This paper presents an enhanced control strategy for three-phase cascaded multilevel Z-source inverters, focusing on the implementation of Selective Harmonic Elimination Pulse Width Modulation (SHEPWM) techniques to improve efficiency. Z-source inverters are gaining prominence in various applications due to their inherent advantages, such as increased voltage boost capability and inherent shoot-through protection. However, achieving optimal control in cascaded multilevel configurations poses challenges that this study seeks to address. The proposed control strategy optimizes the switching patterns of the inverter, thereby enhancing its overall performance. It allows for precise control over the output voltage and reduces harmonic distortion, ensuring the inverter operates efficiently across varying load conditions. The research methodology involves a comprehensive analysis of the proposed technique, including its mathematical modeling and simulation using advanced software tools. Performance metrics such as total harmonic distortion, efficiency, and transient response are evaluated to quantify the improvements achieved. The results obtained demonstrate the efficiency of the proposed control strategy. This method significantly reduces harmonic distortion in the output voltage, leading to improved power quality. Furthermore, the efficiency of the inverter is enhanced, making it suitable for applications demanding high-performance power conversion.

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Noman, Abdullah M., Khaled E. Addoweesh, Ayman A. Alabduljabbar, and Abdulrahman I. Alolah. "Cascaded H-Bridge MLI and Three-Phase Cascaded VSI Topologies for Grid-Connected PV Systems with Distributed MPPT." International Journal of Photoenergy 2019 (January 14, 2019): 1–22. http://dx.doi.org/10.1155/2019/7642919.

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Cascaded multilevel inverter topologies have received a great deal of attention for grid-connected PV systems. In this paper, three-cascaded multilevel inverter configurations are proposed for grid-connected PV applications. These are the three-phase cascaded H-bridge multilevel inverter topology, three-phase cascaded voltage-source inverter topology using inductors, and three-phase cascaded voltage-source inverter topology using coupled transformers. Distributed maximum power point tracking (MPPT) of PV modules using perturbation and observation algorithm is used for all presented topologies. In all presented configurations, each PV module is connected to one DC-DC isolated Ćuk converter for best MPPT achievement. Simulation is achieved by using the SIMULINK environment. The simulation results show that the three proposed topologies function well in improving the grid’s power quality. The grid currents are kept in phase with the grid voltage to ensure unity power factor, and the THD of the grid currents are within the acceptable range. The proposed topologies are experimentally implemented in the lab, and the switching pulses are generated with the help of the MicroLabBox data acquisition system. Comparing the three topologies according to the number of switches, voltage, and current stresses on switches and THD of the generated voltages and grid currents and according to the efficiency has been achieved in this paper, both experimentally and by simulation. The simulation and experimental results and comparisons are presented to verify the proposed topologies’ effectiveness and reliability.

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Rehaoulia, Abir. "Voltage THD limits for three- and single-phase multilevel inverters." Journal of Electrical Engineering 73, no. 5 (2022): 363–67. http://dx.doi.org/10.2478/jee-2022-0050.

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Abstract This paper deals with single and three phase multilevel inverters power quality. The voltage total harmonic distortion rate is an important criterion for choosing the number of inverter levels and checking compatibility with power quality requirements. In this study, the author raises an interesting issue related to the definition of voltage THD boundaries with upper and lower limits. The problem is reformulated, and a novel and more practical approach is developed for three- and single-phase multilevel inverters. Found upper and lower voltage THD limits are sufficiently verified with most known switching algorithms like sinusoidal modulation (SM) with phase disposition (PD), space vector modulation (SVM) and selective harmonic elimination (SHE). They are also valid for cascaded (H-Bridge), neutral point clamped (NPC) and flying capacitors (FC) multilevel inverters.

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Madhu Babu, Thiruveedula, Kalagotla Chenchireddy, Kama Sreevarsha, Badudhala Praveen, Thanveer Mohammad, and Ganji Kashinadh. "CHBMLI based DSTATCOM for power quality improvemt in a three-phase three-wire distribution system with PI controller." International Journal of Advances in Applied Sciences 13, no. 2 (2024): 325. http://dx.doi.org/10.11591/ijaas.v13.i2.pp325-332.

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This paper presents a cascaded h-bridge (CHB) multilevel inverter (MLI) based MLI based distribution static synchronous compensator (DSTATCOM). The main objective of this paper is to reduce source current harmonics in the distribution system by using a cascade H-bridge multilevel inverter (CHBMLI) as DSTATCOM with a proportional-integral (PI) controller. The PI controller compensates reactive power, reduces source current harmonics, and maintains the unity power factor in the distribution system. The conventional two-level inverter-based DSTATCOM has many disadvantages such as high total harmonic distortion (THD), and high switching stress power semi-conductor devices, suitable for only low-power applications. This paper to overcome these drawbacks by using MLI-based DSTATCOM. The proposed system simulations are verified in MATLAB/Simulink software. The verified results are source current, load current, and compensating current.

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Thiruveedula, Madhu Babu, Chenchireddy Kalagotla, Sreevarsha Kama, Praveen Badudhala, Thanveer Mohammad, and Kashinadh Ganji. "CHBMLI based DSTATCOM for power quality improvemt in a three-phase three-wire distribution system with PI controller." International Journal of Advances in Applied Sciences (IJAAS) 13, no. 2 (2024): 325–32. https://doi.org/10.11591/ijaas.v13.i2.pp325-332.

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This paper presents a cascaded h-bridge (CHB) multilevel inverter (MLI) based MLI based distribution static synchronous compensator (DSTATCOM). The main objective of this paper is to reduce source current harmonics in the distribution system by using a cascade H-bridge multilevel inverter (CHBMLI) as DSTATCOM with a proportional-integral (PI) controller. The PI controller compensates reactive power, reduces source current harmonics, and maintains the unity power factor in the distribution system. The conventional two-level inverter-based DSTATCOM has many disadvantages such as high total harmonic distortion (THD), and high switching stress power semi-conductor devices, suitable for only low-power applications. This paper to overcome these drawbacks by using MLI-based DSTATCOM. The proposed system simulations are verified in MATLAB/Simulink software. The verified results are source current, load current, and compensating current.

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Lakshmi, G. Sree, and S. Naveen Kumar. "Comparison of Multilevel Inverters with T-type MLI: A Brief Review." Jurnal Kejuruteraan 35, no. 4 (2023): 803–9. http://dx.doi.org/10.17576/jkukm-2023-35(4)-02.

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This paper gives a comparative analysis of different types of Multilevel Inverters with T-Type inverters. The principal aim of the work is to analyse the T-type multilevel inverter operation with different multilevel inverters such as DiodeClamped Multilevel Inverter, Flying Capacitor Multilevel Inverter and Cascaded H-bridge Multilevel Inverter. All the inverters are compared and their advantages, disadvantages and usages are specified. The inverter used in our work runs on the multilayer bidirectional DC-DC converter. This can be used in Renewable Energy Sources and Electric Vehicle applications. The proposed design includes two power switches with an additional capacitor to balance the currents of the multilayer T-type (MLI) capacitor during an entire drive pattern or fault circumstances. In this design, the big capacitors being electrolytic in T-type Multilevel Inverter has been exchanged with longer-lasting film capacitors due to the highfrequency cycle-by-cycle current security between CN and CP. The converter’s dimensions and weight would be lowered by 20% because of this topology, as the number of switches and the capacitors used for balancing is reduced in this proposed design. The simulation analysis for five-level conventional T-type inverter and proposed T-type inverter with capacitor voltage balancing is done. The line-to-line voltages, line currents, phase voltages, three-phase voltages, and voltage total harmonic distortions are compared for conventional T-type inverter and proposed T-type inverter with capacitor voltage balancing. The simulation results shows that the proposed T-type inverter gives better performance compared to conventional T-type multilevel inverter.

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Narmitha, D., Dr K. Karthikumar, and Dr P. ChandraSekar. "Analysis of Cascaded H Bridge Multilevel Inverter for Three-Phase Induction Motor Drive." International Journal of Electrical and Electronics Research 12, ETEVS (2024): 01–06. http://dx.doi.org/10.37391/ijeer.12et-evs01.

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The last ten years have seen a rise in the usage of multilayer inverters. Because they can produce waveforms with a greater harmonic spectrum and reliable output. Several high voltages and high-power applications are suitable for these new inverters. A multilayer converter not only produce high power ratings, but it also saves time and money and enhances the system performance in terms of harmonics, dv/dt strains, and pressures on the motor bearings. Owing to its flexibility and modularity, the possible topology for a power application is the cascaded H-bridge multilevel inverter (CMI) with separated DC sources. This study investigates a cascade H bridge multilevel inverter, such as a Three, Five, Seven, Nine and Eleven level inverter in order to drive a three phase AC induction motor. A Level shifted Pulse Width Modulation (LSPWM) technique was applied for the CHBMLI. Specific emphasis is given to aspects like modulation and total harmonic distortion that are preferable or necessary for multi-level converters. For both intellectual and scientific considerations, investigating sine triangle carrier pulse width modulation is deemed to be the most auspicious approach. Analysis of the many performance parameters, including load torque, motor speed, and efficiency, an extensive survey is conducted. MATLAB / Simulink is built into the entire system, and simulation results are developed. The purpose of this research is to demonstrate the performance of 9-level and 11-level fed induction motor driving results for Electric Vehicle applications. CHBMLI fed motor drive is better suitable for Induction Motor Drives.

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Belkamel, Hamza, Saad Mekhilef, Ammar Masaoud, and Mohsen Abdel Naeim. "Novel three‐phase asymmetrical cascaded multilevel voltage source inverter." IET Power Electronics 6, no. 8 (2013): 1696–706. http://dx.doi.org/10.1049/iet-pel.2012.0508.

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Veeranna, Mr D. S. "A Comparative Study of 9-Level Inverter and 15-Level Multi Inverter for a Grid Connected System." International Journal for Research in Applied Science and Engineering Technology 12, no. 3 (2024): 1659–63. http://dx.doi.org/10.22214/ijraset.2024.59112.

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Abstract: Recently, the emergence of single phase multilevel inverter has been increased due to its advantages over traditional one. Multilevel Inverters [MLI] are the ones which can give out a stepwise output waveform with the use of power electronic switches, power diodes and some DC voltage source which might be a series/parallel connected PV cells, a renewable source or a battery. Multilevel inverters not only produce low harmonic distortion but also decrease the dv/dt stresses on the equipment Multilevel inverters is a good option as the output voltage of a Multilevel inverter is a stepped waveform which approaches a sinusoid providing lesser harmonic distortion. As the number of levels are increased the harmonic distortion reduces but at the same time the number of switching devices and the DC voltage sources required increases, thus increasing the complexity of the system design and control. Multilevel inverter proposed in this paper uses only 7 switches to provide 9 levels and 15 levels of output voltage. A symmetrical Cascaded H bridge Multi level inverter (SCHBMLI) and Asymmetrical Cascaded H bridge Multilevel Inverter (ASCHBMLI) using PD-PWM technique have been analysed in this paper for grid connection. The Asymmetric Cascade H Bridge [ASCHMLI] implemented in real time system using PIC16F877A microcontroller with RL load. This type of proposed system is used for high power applications in photovoltaic and it’s reduce overall cost as well as size of the system.

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Yousfi, Abdelkader, Youcef Bot, Fayçal Mehedi, and Abdelkader Chaker. "Current model predictive control for three-phase active power filter using cascaded H-bridge multilevel converter." Indonesian Journal of Electrical Engineering and Computer Science 21, no. 2 (2021): 714–22. https://doi.org/10.11591/ijeecs.v21.i2.pp714-722.

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Different technologies in particular in the medium and high-power conversion were implemented and taken into consideration in the last few years. These inverter topologies have been demonstrated to ensure the generation of high-quality voltage waveforms based on power half-conductor switches, which operate on the fundamental frequency. The multilevel inverter H-bridge is a promising alternative among the available multi-level inverter topologies. A predictional current control algorithm for multi-level converters and use on a three-phase cascaded inverter H-bridge. This article reports on a comparison of two check methods associated with a shunt active power filter based on the cascaded inverter of the three-Level type. The first approach is the traditional PI control unit and the second is the predictive current control unit. The reference current for the shunt active power filter is provided by the p-q control strategy for reactive power compensation and current harmonics. The cascade-type three-level inverter has more advantages over a two-leaved inverter; the simulation output of APF is checked by MATLAB/Simulink. The predictive controlled the APF associated with the three-level inverter shows more performances and efficiency compared to the conventional control algorithms.

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Li, Yi Dan, Du Ting Wang, Hong Ming Kang, and Hong Fang Ru. "Application of Cascaded Multilevel Inverter for High Voltage Grid-Connected PV System." Advanced Materials Research 1092-1093 (March 2015): 17–21. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.17.

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The cascaded multilevel inverter may be the best topology to satisfy continuously increasing capacity and scale of grid-connected photovoltaic generation system due to its modularized circuit layout and sufficiently high operating voltage without devices in series. The operating principle of the cascaded multilevel inverter is presented. The control strategy of carrier phase shift PWM is proposed and discussed in detail. A grid-connected photovoltaic (PV) generation system based on a seven level cascaded inverter is provided. Simulation model of a seven level cascaded inverter with phase shifted PWM is built in Simulink environment and simulation results verify that the cascaded multilevel inverter can output high level voltage without devices in series, reduce harmonics, and output high quality waveforms.

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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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Rashmi, M. R., and B. Anu. "Cascading of Diode Clamped Multilevel Inverter Boosters for High Voltage Applications." Applied Mechanics and Materials 313-314 (March 2013): 876–81. http://dx.doi.org/10.4028/www.scientific.net/amm.313-314.876.

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Nonconventional energy sources are playing important role in meeting current power/energy demands. However these sources cannot provide High voltage/power. For power conditioning and voltage amplification solid state power converters are very much essential. One such approach to obtain high voltage was to use cascaded multilevel inverter but cascaded multilevel inverters require separate DC sources and they cannot be used for regenerative applications. To overcome these limitations, a novel configuration is using diode clamped multilevel inverter is proposed here. . The conditioned DC voltage from photovoltaic cells or fuel cells or batteries is boosted and inverted by means of multistage Multilevel Inverters (MLI). Three different configurations are presented in this paper. From the simulation results of all three configurations, the topology which is found to be better is implemented in the real time. A proto type is developed to boost 40 V input DC to 100 V AC and the experimental results for the same are presented.

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Mulyo Utomo, Wahyu, Afarulrazi Abu Bakar, Suhaila Alias, et al. "Modeling of A Single Phase 7-Level Cascaded H-Bridge Multilevel Inverter." International Journal of Engineering & Technology 7, no. 2.6 (2018): 327. http://dx.doi.org/10.14419/ijet.v7i2.6.11704.

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Recently, almost all industrial devices are mostly built on electronic devices which are precisely sensitive to harmonic. In order to meet the requirement from the industries demand aimed at a free-harmonics and high power rating source is remarkably increased in past few years. An inverter which a device or electric circuit that convert direct current to alternating current is one of the electronic devices that give concern to researchers for improvement of generating a neat power source. The inverter can be categorized into a single level and multilevel inverter. As compared to single level inverter, multilevel inverter offers minimum harmonic distortion and higher power output. This paper presents a model of multilevel inverter using 7-level Cascaded H-Bridge of multilevel DC-AC inverter to reduce total harmonic distortion with different sinusoidal pulse width modulation such as phase disposition and phase opposition disposition. Simulation output of single phase multilevel inverter cascaded H-bridge are analysed and verified in the Matlab/Simulink software. The result show that the 7-level cascaded H-Bridge multilevel inverter with phase disposition technique generate less total harmonic distortion if it is compared to the phase opposition disposition technique.

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Priyanka, G., J. Surya Kumari, D. Lenine, Suresh Kumar Tummala, Hassan Mohmmed Al-Jawahry, and Harshit Gupta. "Reduced Common Mode Multilevel Inverter Strategy in Photovoltaic Systems." E3S Web of Conferences 391 (2023): 01136. http://dx.doi.org/10.1051/e3sconf/202339101136.

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Now-a-days, non-conventional energy sources are playing a vital role in the generation of electrical energy. This is due to the disadvantages in the conventional sources like pollution, non-availability of the resources, greenhouse effect. Hence more concentration is made by the researcher’s on these non-conventional sources so called as renewable energy sources. These renewable sources are used with the converters along with filters to give the best output. In this work, we are focusing on the renewable energy called solar energy and hence the converter is inverter in this case. Basically we have conventional inverters as well as multilevel inverters. Multilevel inverters are basically classified into three types and they are cascaded H-bridge multilevel inverter, diode clamped multilevel inverter, flying capacitor multilevel inverter. Among these cascaded multilevel inverter as many advantages like reduced number of components. This advantage is being used in this work and is simulated by using MATLAB.

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Seyezhai, R., K. Radha Sree, K. Sivapathi, and V. Vardhaman. "Analysis and Experimentation of a Three Phase Asymmetric Cascaded Multilevel Inverter for Electric Vehicles." Advanced Materials Research 768 (September 2013): 231–37. http://dx.doi.org/10.4028/www.scientific.net/amr.768.231.

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Multilevel inverters have been gaining immense popularity in high power applications such as Electric vehicles, Flexible AC Transmission Systems etc. This paper focuses on an asymmetric cascaded multilevel inverter employing the variable frequency carrier phase shifted PWM technique. The major advantage of this strategy is that it aids in balancing the switch utilization. The proposed strategy was found to have lower THD and switching losses when compared to the conventional strategies. The simulation was performed using MATLAB/Simulink and the results were verified experimentally.

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Ghughuloth, Dhasharatha, Nampally Rajashekar Varma, Donda Adwaith, Shakeer Hussain, Karthik Gundoji, and Harshini Samineni. "Novel cascaded switched-diode five level inverter for renewable energy integration." International Journal of Advances in Applied Sciences 13, no. 2 (2024): 333. http://dx.doi.org/10.11591/ijaas.v13.i2.pp333-339.

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This research presents the usage of a unique five-level cascaded switching diode for medium voltage integration of renewable energy sources. Its primary purpose is to decrease the quantity of gate drivers and switches. In addition to that, the cost and space for the installation of multilevel inverters are less. The inverter topology of novel cascaded multilevel inverters and switched diodes will combine both benefits. One-cycle control (OCC), which is used for clock phase-shifting (CPS) to regulate a two-stage container security device (CSD) multilevel inverter of renewable energy integration, was created to address issues with the multilevel inverter's direct current (DC) source variations. The topology also provides efficiency, harmonic distortion reduction, and voltage output quality. Waveforms are created, and a robust resistance to DC source variations is attained. The viability of the unique five-level inverter using cascaded switched diodes is confirmed by discussing the results of both simulation and experiment.

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Dhasharatha, Ghughuloth, Rajashekar Varma Nampally, Adwaith Donda, Hussain Shakeer, Gundoji Karthik, and Samineni Harshini. "Novel cascaded switched-diode five level inverter for renewable energy integration." International Journal of Advances in Applied Sciences (IJAAS) 13, no. 2 (2024): 333–39. https://doi.org/10.11591/ijaas.v13.i2.pp333-339.

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This research presents the usage of a unique five-level cascaded switching diode for medium voltage integration of renewable energy sources. Its primary purpose is to decrease the quantity of gate drivers and switches. In addition to that, the cost and space for the installation of multilevel inverters are less. The inverter topology of novel cascaded multilevel inverters and switched diodes will combine both benefits. One-cycle control (OCC), which is used for clock phase-shifting (CPS) to regulate a two-stage container security device (CSD) multilevel inverter of renewable energy integration, was created to address issues with the multilevel inverter's direct current (DC) source variations. The topology also provides efficiency, harmonic distortion reduction, and voltage output quality. Waveforms are created, and a robust resistance to DC source variations is attained. The viability of the unique five-level inverter using cascaded switched diodes is confirmed by discussing the results of both simulation and experiment.

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Tran, Quang-Tho. "An Application of Neural Network-based Sliding Mode Control for Multilevel Inverters." Engineering, Technology & Applied Science Research 14, no. 1 (2024): 12530–35. http://dx.doi.org/10.48084/etasr.6516.

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Multi-level 3-phase inverters using cascaded H-bridges are becoming prominent in the electric drive and renewable energy sectors due to their high capacity and ability to withstand high voltage shocks. Therefore, the modulation and control techniques used in these multilevel inverters have a crucial influence on the quality of the output voltage they produce. The significantly high common-mode voltage amplitude they generate is one of their disadvantages, causing leakage currents and harmonics. This article proposes a new technique using sliding mode control combined with neural networks to manage a three-phase multi-level inverter. The research objective of this innovative technique is to eliminate the need for current controllers and conventional modulation that relies on carrier signals, reducing hardware calculations and enhancing dynamic response. In addition, it demonstrates the ability to minimize harmonics, common mode voltage, and the number of switching counts, thereby limiting the inverter switching losses and increasing device performance. Simulation results performed on a 5-level 3-phase inverter using cascaded H-bridges have confirmed the effectiveness of the proposed method.

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Zawawi, M. N. M., Z. M. Isa, M. H. Arshad, B. Ismail, and M. H. N. Talib. "Comparative Study of Multiphase 5-Level Cascaded H-Bridge Multilevel Inverter System." Journal of Physics: Conference Series 2312, no. 1 (2022): 012062. http://dx.doi.org/10.1088/1742-6596/2312/1/012062.

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Abstract In terms of cost and structural design, the cascaded H-bridge multilevel inverter (CHBMLI) has a significant advantage over diode clamped and capacitor clamped multilevel inverters. The total harmonic distortion (THD) of a 5-level CHBMLI system for three different phases (single-phase, three-phase, and six-phase system) is studied and compared in this work. As switching angles play a role in lowering THD, the switching angles for a 5-level CHBMLI are evaluated using four specific switching angle methods in the initial section of this paper. In the simulation of single-phase system, these angles are being utilized. The angles with the lowest THD value are chosen for three-phase and six-phase system simulation. Based on the findings, the higher phase of 5-level CHBMLI is more efficient in decreasing harmonics.

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Iti, Mahashabdey* Prof. Pawan Pandey. "HARMONIC ANALYSIS OF MULTILEVEL INVERTER." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 8 (2016): 659–66. https://doi.org/10.5281/zenodo.60113.

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This paper present the different levels of cascaded H-bridge inverters and the minimization of total harmonic distortion by increasing levels. Selective Harmonic Elimination technique is used as a switching scheme. The analysis of three, five and seven level cascaded H-bridge inverter simulation work is done by using the MATLAB software and experimental results have been presented to validate the theory. The simulation results show the improvement of output voltage waveform and reduction of the THD by increasing the levels in inverter. 

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Nguyen, Vinh-Quan, and QuangTho Tran. "Reduction of common mode voltage for cascaded multilevel inverters using phase shift keying technique." Indonesian Journal of Electrical Engineering and Computer Science 21, no. 2 (2021): 691. http://dx.doi.org/10.11591/ijeecs.v21.i2.pp691-706.

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Demand of cascaded multilevel inverters in industries of electric drives and renewable energy is increasing due to their large-scale capacity and high voltage. The modulation technique of inverters significantly affects the power quality of the inverter output voltage. This paper proposes a new method of carrier wave modulation using the phase shift keying technique for cascaded multilevel inverters. The phase of a constant frequency carrier wave is changed at an accurate time by an input sinusoidal control signal. This modulation technique is simply implemented and only needs a small memory. It also helps reduce the common mode voltage of inverters in order to suppress the output voltage harmonics. Moreover, the ability to reduce switching count also helps the inverters decrease switching loss. The simulated and experienced results on a cascaded 9-level 3-phase inverter and an F28379D DSP kit have validated the performance of the proposed technique compared with that of the APOD and POD methods.

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Nguyen, Vinh-Quan, and Quang-Tho Tran. "Reduction of common mode voltage for cascaded multilevel inverters using phase shift keying technique." Indonesian Journal of Electrical Engineering and Computer Science 21, no. 2 (2021): 691–706. https://doi.org/10.11591/ijeecs.v21.i2.pp691-706.

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Demand of cascaded multilevel inverters in industries of electric drives and renewable energy is increasing due to their large-scale capacity and high voltage. The modulation technique of inverters significantly affects the power quality of the inverter output voltage. This paper proposes a new method of carrier wave modulation using the phase shift keying technique for cascaded multilevel inverters. The phase of a constant frequency carrier wave is changed at an accurate time by an input sinusoidal control signal. This modulation technique is simply implemented and only needs a small memory. It also helps reduce the common mode voltage of inverters in order to suppress the output voltage harmonics. Moreover, the ability to reduce switching count also helps the inverters decrease switching loss. The simulated and experienced results on a cascaded 9-level 3-phase inverter and an F28379D DSP kit have validated the performance of the proposed technique compared with that of the APOD and POD methods.

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J, Dhinesh, and N. Narmadhaix. "Multilevel Inverter from a New Basic Unit." Journal of Electrical Engineering and Automation 5, no. 1 (2023): 134–50. http://dx.doi.org/10.36548/jeea.2023.1.010.

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This research makes a novel suggestion for a cascaded single-phase multilevel inverter. The suggested basic unit is connected in series with this inverter, which can only create positive levels at the output. So, the recommended inverter is expanded upon by an H-bridge. This inverter is referred to as a developed cascaded multilevel inverter, and it allows the output of the architecture to have both even and odd voltage levels. Having fewer driver circuits, DC voltage sources and power switches is a benefit of the single-phase cascaded multilevel inverter that is built. In turn, this lowers the inverter’s cost as well as the size on installation. These features are acquired when comparing the proposed inverter with the conventional inverter.

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Hiransing, Bancha, Boonthong Wasuri, Sanya Kuankid, and Thanin Muangpool. "Five-level three phase cascaded H-bridge inverter using digital signal processor control for renewable energy applications." International Journal of Electrical and Computer Engineering (IJECE) 15, no. 2 (2025): 1348–60. https://doi.org/10.11591/ijece.v15i2.pp1348-1360.

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This article presents a five-level three-phase cascaded H-bridge inverter for renewable energy applications, aimed at reducing total harmonic distortion (THD) and enhancing efficiency. The inverter uses a digital signal processing board, TMS320F28335, to generate pulse-width modulation signals through MATLAB/Simulink, ensuring precise control. The experimental setup includes an 84 VDC input voltage and a 300-watt load. Simulation and experimental results closely align, validating the accuracy of the simulation model. The output voltage shows a stepped pattern characteristic of multilevel inverters, significantly reducing harmonic distortion. THD analysis reveals a substantial reduction at higher modulation indices, with particularly low THD at a modulation index of 0.95. Consistent THD levels across modulation indices of 0.5, 0.8, and 0.95 demonstrate robust performance under varying conditions. Comparative analysis indicates that the proposed inverter achieves lower THD levels than traditional inverters, enhancing power quality and system efficiency. The five-level three-phase cascaded H-bridge inverter offers a promising solution for renewable energy applications by significantly reducing THD and improving power quality. Its robust performance and scalability potential contribute valuable advancements to renewable energy systems.

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Satish, Kumar, and Sasi Kumar M. "Asymmetric hybrid multilevel inverter with reduced harmonic using hybrid modulation technique." International Journal of Power Electronics and Drive System (IJPEDS) 11, no. 2 (2020): 605–10. https://doi.org/10.11591/ijpeds.v11.i2.pp605-610.

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This paper studies the Asymmetric cascaded three phase multilevel inverter developed with hybrid modulation technique applied for an industrial application. The aim of this paper to reduce the Total harmonics distortion in the cascaded multi level inverter by introducing the new concept to develop the three phase CMLI. This inverter has two segments, one segment has H-bridge inverter and another segment has sequential arrangement of power semi conductor switches with asymmetrical voltage source in the ratio of 1:2. Similarly develop the segments for other phases. This new topology is called as Hybrid MLI. This hybrid MLI is used to reduce the no of semiconductor device requirement and the Total harmonics distortion. The inverter is controlled by Phase disposition (PD) and alternative phase opposition disposition PWM technique (APOD). This control technique is used to minimize the current harmonic and increase the system performance. The circuit is simulated using Matlab circuit and its performance is compared using PD and APOD PWM techniques and verified with simulation results.

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Babaei, Ebrahim, Concettina Buccella, and Carlo Cecati. "New 8-Level Basic Structure for Cascaded Multilevel Inverters with Reduced Number of Switches and DC Voltage Sources." Journal of Circuits, Systems and Computers 28, no. 03 (2019): 1950038. http://dx.doi.org/10.1142/s0218126619500385.

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Multilevel inverters are generally used in medium-voltage and high-power applications. In this paper, a new 8-level basic structure for cascaded multilevel inverters is proposed. Based on proposed basic structure, two different cascaded multilevel topologies are proposed. The proposed cascaded multilevel inverters use less number of power switches, IGBTs and dc voltage sources compared with the conventional multilevel inverters. In order to generate all steps at the output voltage, three different algorithms to determine the amplitudes of dc voltage sources are presented. To reconfirm the performance and correct operation of the proposed topologies, the experimental results for a 15-level inverter are presented.

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R, Supriya, and Ramaraj S. "Connected Three Phase Cascaded Multilevel Inverter Topology for Pv Applications." ESP Journal of Engineering & Technology Advancements 2, no. 3 (2022): 19–23. http://dx.doi.org/10.56472/25832646/esp-v2i3p105.

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Journal articles on the topic 'Three-phase cascaded multilevel inverter'

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