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Journal articles on the topic 'Multilevel Current Source Inverter'

Author: Grafiati

Published: 2 June 2025

Last updated: 12 July 2025

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Nik, Fasdi Nik Ismail, Hashim Norazlan, and Johari Dalina. "A comparative study of cascade h-bridge multilevel voltage source inverter and parallel inductor multilevel current source inverter." International Journal of Power Electronics and Drive System (IJPEDS) 10, no. 3 (2019): 1355–63. https://doi.org/10.11591/ijpeds.v10.i3.pp1355-1363.

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This paper presents the analysis study between multilevel inverters that are often classified into multilevel voltage source and multilevel current source inverters. For multilevel voltage source inverter (MVSI), the specific topology studied for this work is the Cascaded H-Bridge MVSI. Whereas, the multilevel current source inverter (MCSI) is based on Paralleled Inductor Configuration MCSI. For this study, the analysis between these converters are done with respect to the number of components, the advantages and disadvantages of each converters during performing inverter operation. In term of output voltage and current quality, the percentage of the Total Harmonic Distortion (THD) are measured and compared for both topologies. MATLAB/Simulink software has been used in this research to design and simulate in order to study the performances of both inverters.

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Nik Ismail, Nik Fasdi, Norazlan Hashim, and Dalina Johari. "A comparative study of cascade H-bridge multilevel voltage source inverter and parallel inductor multilevel current source inverter." International Journal of Power Electronics and Drive Systems (IJPEDS) 10, no. 3 (2019): 1355. http://dx.doi.org/10.11591/ijpeds.v10.i3.pp1355-1363.

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Dr. Sujatha Balaraman,, P. Yogini. "Three Phase Eleven Level Modular Multilevel Inverter with PD-PWM for Grid Connected System." International Journal for Modern Trends in Science and Technology, no. 8 (August 7, 2020): 86–91. http://dx.doi.org/10.46501/ijmtst060816.

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The prominence of Modular Multilevel Inverters (MMI) is rising owing their merits of simple mechanical construction and good voltage sharing for semiconductor devices. Mostly Multilevel Inverters use more than one source; however, the effective use of all the sources at all levels is rare. Conventional Multilevel Inverters will diminish the energy efficiency of the conversion system. When compared to conventional multilevel inverter, Modular Multilevel Inverter with a high numbers of voltage levels seem to be the most suitable because of the use of an isolated dc source. This paper explores a three-phase eleven level modular multilevel inverter with phase disposition pulse width modulation technique (PD-PWM) that can extract power from all the sources at all the levels. Besides, this paper develops a synchronous d-q reference frame controller to control the current of 11kV. When compared with Reduced Switch Count based Multilevel Inverter Series/Parallel switching topologies, the Modular Multilevel Inverter provides better Total Harmonic Distortion (THD) of output voltage and utilization factor.

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Et. al., Mr A. Clement Raj,. "Performance Evaluation of Symmetrical Current Source Multilevel Inverter." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 10 (2021): 5598–607. http://dx.doi.org/10.17762/turcomat.v12i10.5370.

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In this paper proposes a Current Source Multilevel Inverter (CSMLI) with a single rating inductor topology. The multilevel inverters are generally acquainted with power converter's applications because of decreased dv/dt, di/dt stress, and extremely efficient for minimising harmonic distortion in the both output voltage and current. The proposed nine-level current source inverter has analyses under symmetrical operation, and their operation are compared using PI and Fuzzy PI controllers with multicarrier PWM topology. PV utilized as a DC source, photovoltaic energy is an environmentally friendly energy with high potential, simple construction, maintenance, dependability and long life. MATLAB/Simulink simulation has been made for the proposed converter to get its exhibition measures. Some test results are given to confirm the presented Current Source Multilevel Inverter.

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Suroso, Winasis, Tri Nugroho Daru, and Tri Cahyanto Wahyu. "Power loss analysis of current-modules based multilevel current-source power inverters." TELKOMNIKA Telecommunication, Computing, Electronics and Control 17, no. 1 (2019): 453–62. https://doi.org/10.12928/TELKOMNIKA. v17i1.11601.

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A power loss analysis of multilevel current-source inverter (MCSI) circuits developed from two basic configurations of three-level current-source inverters, i.e. H-bridge and common-emitter inverter configurations is presented and discussed. The first circuit topology of the MCSI is developed by using DC current modules connected to the primary three-level H-bridge inverter. The second MCSI circuit is created by connecting the current-modules to a three-level common-emitter inverter. The DC current modules work generating the intermediate level waveform of the inverter circuits. Power loss analysis of the both topologies was carried out to explore the efficiency performance of the inverter circuits. The results showed that for the H-bridge and common-emitter MCSI using DC current modules, the amount of conduction losses in the inverter circuits could be diminished when the level number of AC output current increase. The measurement test results have also proved that using these MCSI topologies, the power conversion efficiency will also increase.

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Rana, Ronak A., Sujal A. Patel, Anand Muthusamy, Chee woo Lee, and Hee-Je Kim. "Review of Multilevel Voltage Source Inverter Topologies and Analysis of Harmonics Distortions in FC-MLI." Electronics 8, no. 11 (2019): 1329. http://dx.doi.org/10.3390/electronics8111329.

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We review the most common topology of multi-level inverters. As is known, the conventional inverters are utilized to create an alternating current (AC) source from a direct current (DC) source. The two-level inverter provides various output voltages [(Vdc/2) and (−Vdc/2)] of the load. It is a successive method, but it makes the harmonic distortion of the output side, Electromagnetic interference (EMI), and high dv/dt. We solve this problem by constructing the sinusoidal voltage waveform. This is achieved by a “multilevel inverter” (MLI). The multilevel inverter creates the output voltage with multiple DC voltages as inputs. Many voltage levels are combined to produce a smoother waveform. During the last decade, the multilevel inverter has become very popular in medium and high-power applications with some advantages, such as the reduced power dissipation of switching elements, low harmonics, and low EMIs. We introduce the information about several multilevel inverters such as the diode-clamped multilevel inverter (DC-MLI), cascaded H-bridge multilevel inverter (CHB-MLI), and flying-capacitor multilevel inverter (FC-MLI) with Power systems CAD (PSCAD) simulation. It is shown that THD is 28.88% in three level FC-MLI while THD is 18.56% in five level topology. Therefore, we can decrease the total harmonic distortion adopting the higher-level topology.

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Othman, M. Hussein Anssari. "NINE LEVEL CURRENT SOURCE INVERTER WITH SOLAR PV." International Journal of Engineering Research and Modern Education 1, no. 2 (2016): 51–58. https://doi.org/10.5281/zenodo.61837.

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Multi-level current source using main inverter and auxiliary inductor cell is sufficient to the industrial engines because it generate high power. The present inverter consist of a basic H-bridge current source inverter working as a main inverter generates a multilevel current waveform in joining with two inductor cells connected in parallel as auxiliary circuits. The inductor cells work by generating the intermediate level of the multilevel current waveform with no additional external dc-power sources. This topology is done using Renewable energy by Depending on the solar cell as a dc source. A nine level PWM inverter configuration, with solar PV source will discuss in this paper.

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Sinu, KJ, and Ranganathan G. "A PV FED Three Phase Switched Z-Source Multi Level Inverter for Induction Motor Drives." Indonesian Journal of Electrical Engineering and Computer Science 9, no. 1 (2018): 24–28. https://doi.org/10.11591/ijeecs.v9.i1.pp24-28.

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Generally induction motor drives posses higher harmonic contents in line voltage and current due to high switching frequency used in inverters. Conventional induction motor drives employ two level voltage source inverters which has THD in level of 50%. This paper presents a switched z-source multilevel inverter which has voltage boosting capability and has lesser THD level in comparison with conventional two level voltage source inverters. This drive is fed from a photo voltaic source because of its voltage boosting capability. A single phase five level switched z-source inverter is initially designed and considered as single cell and three such cells are created for powering three phase induction motor. The proposed three cell PV source switched z-source multilevel inverter for three phase induction motor is simulated in MATLAB/Simulink software to verify merits of proposed IM drive.

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Vazquez, Nimrod, Hector Lopez, Claudia Hernandez, Eslí Vazquez, René Osorio, and Jaime Arau. "A Different Multilevel Current-Source Inverter." IEEE Transactions on Industrial Electronics 57, no. 8 (2010): 2623–32. http://dx.doi.org/10.1109/tie.2009.2030814.

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Vázquez, Nimrod, Luz del Carmen García, Claudia Hernández, et al. "A Grid-Connected Multilevel Current Source Inverter and Its Protection for Grid-Disconnection." International Journal of Photoenergy 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/575309.

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Traditionally DC-AC converters are considered with voltage source inverters (VSI); although less studied and discussed, it has started recently to be used current source inverters (CSI). Another possibility for DC/AC conversion is the multilevel configuration. This paper shows experimental operation and simulation analysis of a grid-connected multilevel current source inverter (MCSI), which includes a circuit for equipment safety reasons due to grid disconnections.

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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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Bao, Jian Yu, Wei Bing Bao, and Zhong Chao Zhang. "A Generalized Three-Phase Multilevel Current-Source Inverter Topology." Applied Mechanics and Materials 88-89 (August 2011): 373–78. http://dx.doi.org/10.4028/www.scientific.net/amm.88-89.373.

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A generalized three-phase multilevel current-source inverter (MCSI) topology is proposed by implanting the generalized N-level current cells into a three-phase MCSI topology which is derived from the three-phase multilevel voltage-source inverter (MVSI) topology through dual conversion. In the generalized three-phase MCSI topology, each intermediate dc-link current level can be automatically balanced without adding any external circuits, thus a true multilevel structure is provided. Output current of each phase is independently modulated because of being supplied with two DC current-sources. This allows the wealth of existing knowledge relating to the operations, modulations and control strategies of multilevel VSI to be immediately applied to such multilevel CSI. Simulation results of 5-level and 7-level CSI systems are presented to verify the proposed three-phase MCSI topology.

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Aguirre, Miguel Pablo, Laura Calvino, and María Inés Valla. "Multilevel Current-Source Inverter With FPGA Control." IEEE Transactions on Industrial Electronics 60, no. 1 (2013): 3–10. http://dx.doi.org/10.1109/tie.2012.2185014.

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Najafi, Ehsan, Amir Hosein Rashidi, and Seyed Mohammad Dehghan. "Z-source reversing voltage multilevel inverter for photovoltaic applications with inherent voltage balancing." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (2022): 267. http://dx.doi.org/10.11591/ijpeds.v13.i1.pp267-274.

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Photovoltaic (PV) inverters have been widely used in solar energy to change the direct current (DC) voltage of PV panels to the grid alternating current (AC) voltage. They are comprised of DC-DC section for maximum power point tracking (MPPT) and DC-AC part to provide required output AC voltage. This paper provides a unique configuration that integrates both sections in one part. A Z-source multilevel inverter is proposed based on Z-source networks and reversing voltage (RV) multilevel inverter. The Z-source network can be used to increase the level of the input voltages and MPPT as well. In addition, the prop used topology uses multilevel topology to accommodate more DC inputs and benefit from features of multilevel level inverters in AC output. Moreover, using Z-source network can minimize equated monthly installment (EMI) due to the lower stress on the semiconductor switches. Finally, a seven level topology is designed and simulated to show the performance of proposed topology.

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KJ, Sinu, and G. Ranganathan. "A PV FED Three Phase Switched Z-source Multi Level Inverter for Induction Motor Drives." Indonesian Journal of Electrical Engineering and Computer Science 9, no. 1 (2018): 24. http://dx.doi.org/10.11591/ijeecs.v9.i1.pp24-28.

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Generally induction motor drives posses higher harmonic contents in line voltage and current due to high switching frequency used in inverters. Conventional induction motor drives employ two level voltage source inverters which has THD in level of 50%. This paper presents a switched z-source multilevel inverter which has voltage boosting capability and has lesser THD level in comparison with conventional two level voltage source inverters. This drive is fed from a photo voltaic source because of its voltage boosting capability. A single phase five level switched z-source inverter is initially designed and considered as single cell and three such cells are created for powering three phase induction motor. The proposed three cell PV source switched z-source multilevel inverter for three phase induction motor is simulated in MATLAB/Simulink software to verify merits of proposed IM drive

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Mahto, Kailash Kumar, Bidyut Mahato, Bikramaditya Chandan, et al. "A New Symmetrical Source-Based DC/AC Converter with Experimental Verification." Electronics 13, no. 10 (2024): 1975. http://dx.doi.org/10.3390/electronics13101975.

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This research paper introduces a new topology for multilevel inverters, emphasizing the reduction of harmonic distortion and the optimization of the component count. The complexity of an inverter is determined by the number of power switches, which is significantly reduced in the presented topology, as fewer switches require fewer driver circuits. In this proposed topology, a new single-phase generalized multilevel inverter is analyzed with an equal magnitude of voltage supply. A 9-level, 11-level, or 13-level symmetrical inverter with RL load is analyzed in MATLAB/Simulink 2019b and then experimentally validated using the dSPACE-1103 controller. The experimental verification of the load voltage and current with different modulation indices is also presented. The analysis of the proposed topology concludes that the total required number of components is lower than that necessary for the classical inverter topologies, as well as for some new proposed multilevel inverters that are also compared with the proposed topology in terms of gate driver circuits, power switches, and DC sources, which thereby enhances the goodness of the proposed topology. Thus, a comparison of this inverter with the other topologies validates its acceptance.

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Lei, Shanshan, Ningzhi Jin, and Jiaxin Jiang. "Current-Prediction-Controlled Quasi-Z-Source Cascaded Multilevel Photovoltaic Inverter." Electronics 13, no. 10 (2024): 1824. http://dx.doi.org/10.3390/electronics13101824.

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To address problems that traditional two-stage inverters suffer such as high cost, low efficiency, and complex control, this study adopts a quasi-Z-source cascaded multilevel inverter. Firstly, the quasi-Z-source inverter utilizes a unique impedance network to achieve single-stage boost and inversion without requiring a dead zone setting. Additionally, its cascaded multilevel structure enables independent control of each power unit structure without capacitor voltage sharing problems. Secondly, this study proposes a current-predictive control strategy to reduce current harmonics on the grid side. Moreover, the feedback model of current and system state is established, and the fast control of grid-connected current is realized with the deadbeat control weighted by the predicted current deviation. And a grid-side inductance parameter identification is added to improve control accuracy. Also, an improved multi-carrier phase-shifted sinusoidal PWM method is adopted to address the issue of switching frequency doubling, which is caused by the shoot-through zero vector in quasi-Z-source inverters. Finally, the problems of switching frequency doubling and high harmonics on the grid side are solved by the improved deadbeat control strategy with an improved MPSPWM method. And a seven-level simulation model is built in MATLAB (2022b) to verify the correctness and superiority of the above theory.

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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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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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Khoun-Jahan, Hossein. "Switched Capacitor Based Cascaded Half-Bridge Multilevel Inverter With Voltage Boosting Feature." CPSS Transactions on Power Electronics and Applications 6, no. 1 (2021): 63–73. http://dx.doi.org/10.24295/cpsstpea.2021.00006.

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Cascaded multilevel inverter (CMI) topology is prevalent in many applications. However, the CMI requires many switches and isolated dc sources, which is the main drawback of this type of inverter. As a result, the volume, cost and complexity of the CMI topology are increased and the efficiency is deteriorated. This paper thus proposes a switched-capacitor-based multilevel inverter topology with half-bridge cells and only one dc source. Compared to the conventional CMI, the proposed inverter uses almost half the number of switches, while maintaining a boosting capability. Additionally, the main drawback of switched-capacitor multilevel inverters is the capacitor inrush current. This problem is also averted in the proposed topology by using a charging inductor or quasi-resonant capacitor charging with a front-end boost converter. Simulation results and lab-scale experimental verifications are provided to validate the feasibility and viability of the proposed inverter topology.

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Al-Mamoori, Dalya Hamzah, Naziha Ahmad Azli, Shahrin Md Ayob, and Ali A. Abdullah Albakry. "A multilevel boost inverter with removed leakage current and a reduced number of elements for photovoltaic applications." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 1 (2024): 312. http://dx.doi.org/10.11591/ijpeds.v15.i1.pp312-322.

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Recent research has concerted on transformer-less multilevel inverters (TL-MLIs) due to their high-voltage or high-power capacity for converting the low-voltage output of renewable energy sources to the desired output. Moreover, they yield higher efficiency, lower cost and size than the conventional type. However, these inverters usually suffer from leakage current. The proposed inverter attempts to accommodate this concern to the greatest extent feasible. The proposed inverter structure exhibits a common ground between the input and output ports. Due to this, the total common mode voltage (CMV) is constant. The photovoltaic (PV) source to the grid parasitic capacitor is short-circuited due to this common ground feature, which results in negligible leakage current. The proposed inverter also features a boosting output voltage using only a single voltage source with minimum power devices. The number of output levels can be increased with the modular application of the proposed inverter. Finally, the mathematical analysis for the proposed inverter has been accomplished, and the MATLAB/Simulink simulation results are presented. Also, the results show the output voltage boost capability, zero leakage current and suitable total harmonic distortion for output voltage and current waveforms.

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Ehsan, Najafi, Hosein Rashidi Amir, and Mohammad Dehghan Seyed. "Z-source reversing voltage multilevel inverter for photovoltaic applications with inherent voltage balancing." International Journal of Power Electronics and Drive Systems (IJPEDS) 13, no. 1 (2022): 267–74. https://doi.org/10.11591/ijpeds.v13.i1.pp267-274.

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Photovoltaic (PV) inverters have been widely used in solar energy to change the direct current (DC) voltage of PV panels to the grid alternating current (AC) voltage. They are comprised of DC-DC section for maximum power point tracking (MPPT) and DC-AC part to provide required output AC voltage. This paper provides a unique configuration that integrates both sections in one part. A Z-source multilevel inverter is proposed based on Zsource networks and reversing voltage (RV) multilevel inverter. The  Zsource network can be used to increase the level of the input voltages and MPPT as well. In addition, the prop used topology uses multilevel topology to accommodate more DC inputs and benefit from features of multilevel level inverters in AC output. Moreover, using Z-source network can minimize equated monthly installment (EMI) due to the lower stress on the semiconductor switches. Finally, a seven level topology is designed and simulated to show the performance of proposed topology. Maximum

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Nalli, Praveen Kumar, Kalyan Sagar Kadali, Ramu Bhukya, V. Rajeswari, and Durga Prasad Garapati. "Experimental Validation for A Nine-Switched 3-phase Multilevel Inverter (MLI) With a Photovoltaic (PV) Source of Array." Journal of Physics: Conference Series 2089, no. 1 (2021): 012021. http://dx.doi.org/10.1088/1742-6596/2089/1/012021.

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Abstract Now-a-days Usage of Multilevel Inverters application is very wide in the industrial applications. Keeping in view of industrial applications, a multi-level inverter with a solar PV array is designed in this paper to deliver power to the Alternating Current based load. A step-up converter is used at the input side of the three-phase multilevel inverter, which delivers the energy for the three-phase load, to regulate the output voltage of the solar Photovoltaic panel. The multilevel inverter utilizes 9 switching devices with five level sources in accordance to the usage of the level of sources in recent topologies. However, the advantage of this topology is that it uses fewer semiconductor switches than current topologies. Eventually, the paper includes the results of the modelling in the MATLAB and the experimental implementation of the proposed topology.

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Debela, Tamiru, and Jiwanjot Singh. "Switched capacitor based single DC source boost multilevel inverter (S2-MLI) featuring isolation based soft charging with minimum device count." International Journal of Emerging Electric Power Systems 22, no. 4 (2021): 493–504. http://dx.doi.org/10.1515/ijeeps-2021-0110.

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Abstract Multilevel inverters (MLIs) have formed a new wave of interest in research and industry. Switched capacitor-based multilevel inverters are used to avoid the need for multiple separated DC sources compared to cascaded MLIs. However, the inclusion of several capacitors creates problems such as high inrush current, voltage imbalance. To avoid these drawbacks, this paper proposes an isolation-based scheme by using a flyback converter in the switched capacitor multilevel inverter. Further, the overall topology provides step-up AC voltage across the load from a single DC source with fewer power switches. To generate a step-up five-level voltage across the load, switched capacitor-based multilevel inverter needs six power switches and only one capacitor. To get the appropriate switching operation to generate the NL-levels, phase disposition pulse width modulation (PD-PWM) has been developed. The extended nine-level S 2 -MLI is also discussed in this paper under different conditions as change in input source voltage and dynamic load change. Moreover, to prove the superior performance of switched-capacitor single DC source multilevel inverter (S2-MLI), comparative analysis with existing single DC source MLI has been performed. The effectiveness and feasibility of the proposed topology are tested with varieties of loads by simulation using Matlab/Simulink. To validate the simulation results, hardware implementation has been done of five-level S2-MLI considering resistive and motor load by using DSpace 1103 controller.

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Guo, Xiaoqiang, Yu Bai, and Baocheng Wang. "A Programmable Single-Phase Multilevel Current Source Inverter." IEEE Access 7 (2019): 102417–26. http://dx.doi.org/10.1109/access.2019.2931741.

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ELNADY, A. "AN EFFICIENT CURRENT REGULATOR FOR MULTILEVEL VOLTAGE SOURCE CONVERTER BASED ON A SIMPLE ANALOG CONTROL CIRCUIT." Journal of Circuits, Systems and Computers 22, no. 04 (2013): 1350023. http://dx.doi.org/10.1142/s0218126613500230.

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This paper presents an innovative driver circuit for a new current regulator of the multilevel inverters. The proposed regulator has a PI controller to guarantee the optimum tracking for the reference current. This proposed regulator has the advantage of integration between the PI controller and the multicarrier switching operation. This regulator fits the operation of multilevel and cascaded converters. The suggested current regulator is compared with several existing current regulators of the multilevel and cascaded converters. The performance of the proposed regulator is verified using simulation results in comparison with the performance of the common existing current regulators for the multilevel inverter. Moreover, this paper shows the performance of the new regulator in power system applications.

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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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Bao, Jian-yu, Wei-bing Bao, and Zhong-chao Zhang. "Generalized multilevel current source inverter topology with self-balancing current." Journal of Zhejiang University SCIENCE C 11, no. 7 (2010): 555–61. http://dx.doi.org/10.1631/jzus.c0910605.

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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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Gajula, Ujwala, Kalpanadevi Manivannan, and Nomula Malla Reddy. "Solar PV based seventeen level reduced switch symmetrical multilevel inverter topology fed induction motor." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 2 (2024): 1009. http://dx.doi.org/10.11591/ijpeds.v15.i2.pp1009-1016.

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Multilevel inverters have received a lot of interest in recent years due to their ability to deliver more voltage levels than typical two-level inverters. Because of this property, multilevel inverters can produce output waveforms that closely resemble sinusoidal waveforms, lowering harmonic distortion dramatically. The emergence of reduced switch symmetrical multilevel inverter topologies has developed the curiosity of many different power conversion systems. These new topologies offer numerous advantages, including greater output voltage quality, fewer harmonic distortions, and increased power conversion efficiency. The inclusion of these inverters in the feeding of induction motors is one of their many prominent uses. A 17 levels of multi-level inverter (MLI) topology is presented with reduced switch count and harmonic reduction for power quality improvement. The inverter is fed by isolated equal photovoltaic panels which act as direct current or DC source. To reduce complexity, switching pulses are generated using hybrid pulse width modulation technique which is designed as controller. Through the use of MATLAB/Simulink, the performance assessment of a unique cascaded multilevel inverter-based reduced switch symmetrical inverter feeding an induction motor drive has been verified. The harmonic distortion with reduced switches obtained is 7.47% which is comparatively less than when compared with conventional cascaded H-bridge topology.

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Gajula, Ujwala, Kalpanadevi Manivannan, and Nomula Malla Reddy. "Solar PV based seventeen level reduced switch symmetrical multilevel inverter topology fed induction motor." International Journal of Power Electronics and Drive Systems (IJPEDS) 15, no. 2 (2024): 1009–16. https://doi.org/10.11591/ijpeds.v15.i2.pp1009-1016.

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MUSSA AL-MAMOORI, DALYA HAMZAH, Shahrin Md Ayob, Ali A. Abdullah Albakry, and Razman Ayop. "A Five-Level Common-Ground Inverter with Dynamic Voltage Boost and Fewer Elements for Photovoltaic Applications." ELEKTRIKA- Journal of Electrical Engineering 23, no. 2 (2024): 53–61. http://dx.doi.org/10.11113/elektrika.v23n2.516.

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Transformer-less multilevel inverters (TL-MLIs) are the subject of recent research due to their high-voltage or high-power capacity to convert low-voltage output from renewable energy sources into the desired output. They are also less expensive and smaller than traditional varieties. Nevertheless, leakage current is a common problem with these inverters. The proposed inverter aims to address this issue to the maximum extent possible. In the proposed inverter structure, there is a common ground for the input and output terminals. As a result, the overall common mode voltage (CMV) remains constant. This common ground feature short-circuits the Photovoltaic (PV) source to the grid parasitic capacitor, resulting in negligible leakage current. Furthermore, the proposed inverter boosts output voltage using the least amount of power devices and a single voltage source. The proposed inverter can be used modularly, increasing the number of output levels that can be achieved. The simulation results from MATLAB/Simulink and the conclusion of the mathematical analysis for the proposed inverter are shown. The results also demonstrate the output voltage boost capability, zero leakage current, and an appropriate total harmonic distortion for the output voltage and current waveforms.

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Al-Mamoori, Dalya Hamzah, Ayob Shahrin Md, and M. Saad Arif. "Single-stage transformer less multilevel boost inverter with zero leakage current for PV system." International Journal of Power Electronics and Drive Systems 16, no. 1 (2025): 673–82. https://doi.org/10.11591/ijpeds.v16.i1.pp673-682.

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Transformer less inverters (TIs) are highly efficient and have a high power density, making them a popular choice for grid-connected solar PV applications. However, certain topologies can lead to high-frequency common-mode voltage (CMV), which can cause issues such as high leakage current, electromagnetic interference, and an absence of safety. Our newly developed inverter is designed to be more efficient, cost-effective, and compact than traditional types while also addressing the issue of leakage current. This architecture eliminates leakage current by directly connecting the grid's neutral terminal to the PV's negative polarity, resulting in a low leakage current. Moreover, the inverter increases output voltage using only one voltage source and a few power devices, making it a cost-effective solution. Its modular form allows for an increase in output levels, further enhancing its cost-effectiveness. We conducted a comprehensive mathematical examination, and the MATLAB/Simulink results demonstrate its ability to increase the output voltage, eliminate leakage current, and maintain acceptable output voltage THD and current waveforms. These results and the inverter's safety features showcase significant improvements over traditional inverters and provide a secure and reliable solution for grid-connected solar PV applications.

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Estévez-Bén, Adyr A., Alfredo Alvarez-Diazcomas, and Juvenal Rodríguez-Reséndiz. "Transformerless Multilevel Voltage-Source Inverter Topology Comparative Study for PV Systems." Energies 13, no. 12 (2020): 3261. http://dx.doi.org/10.3390/en13123261.

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At present, renewable energies represent 25% of the global power generation capacity. The increase in clean energy facilities is mainly due to the high levels of pollution generated by the burning of fossil fuels to satisfy the growing electricity demand. The global capacity of generating electricity from solar energy has experienced a significant increase, reaching 505 GW in 2018. Today, multilevel inverters are used in PV systems to convert direct current into alternating current. However, the use of multilevel inverters in renewable energies applications presents different challenges; for example, grid-connected systems use a transformer to avoid the presence of leakage currents. The grid-connected systems must meet at least two international standards analyzed in this work: VDE 0126-1-1 and VDE-AR-N 4105, which establish a maximum leakage current of 300 mA and harmonic distortion maximum of 5%. Previously, DC/AC converters have been studied in different industrial applications. The state-of-the-art presented in the work is due to the growing need for a greater use of clean energy and the use of inverters as an interface between these technologies and the grid. Also, the paper presents a comparative analysis of the main multilevel inverter voltage-source topologies used in transformerless PV systems. In each scheme, the advantages and disadvantages are presented, as well as the main challenges. In addition, current trends in grid-connected systems using these schemes are discussed. Finally, a comparative table based on input voltage, switching frequency, output levels, control strategy used, efficiency, and leakage current is shown.

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Zulkifli, Shamsul Aizam, Epha Yusriyanna Riyandra, Suriana Salimin, Ahmed Naji Zaidan, and Ronald Jackson. "Investigation of Multilevel Inverter for the Next Distributed Generation Using Low-Cost Microcontroller." International journal of electrical and computer engineering systems 10, no. 1 (2019): 11–18. http://dx.doi.org/10.32985/ijeces.10.1.2.

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Nowadays, more research projects have described a converter that is widely used at the distributed generation (DG) level in order to increase the amount of electrical power generation. The converter is known as an inverter when only one DG source is used or as a multi-inverter when several DGs are used. Here, the application of a multilevel inverter with a C2000 microcontroller (Texas Instruments (TI) TMS320F28335 microcontroller), which can be implemented with a current feedback loop, is investigated. This microcontroller acts as a communication interface between MATLAB SIMULINK and the multilevel inverter. Meanwhile, the current control model is modeled in MATLAB for designing the control strategy. It is where the multilevel inverter switches are triggered by using pulse-width modulation (PWM) signals generated by the microcontroller output. At the same time, the proportional integral derivative (PID) current control is used in order to allow the load current to follow the reference current. Based on the results, it can be summarized that the multilevel inverter is a very useful device for the next DG sources when it is combined with current control for load current distribution. From this investigation, it can be seen that in the future DGs could be connected to a multilevel inverter structure, where it will reduce the dependency on filter design and have a more sinusoidal output to the load for different DG power ratings.

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Suroso, Suroso, Winasis Winasis, Priswanto Priswanto, and Sholikhah Sholikhah. "Improving output current of inductor-cell based five-level CSI using hysteresis current controller." International Journal of Power Electronics and Drive Systems (IJPEDS) 12, no. 1 (2021): 249. http://dx.doi.org/10.11591/ijpeds.v12.i1.pp249-257.

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Current source inverter (CSI) operates to output a specified ac current waveform from dc current sources. Talking about power quality, harmonics distortion of ac waveform is a problem of an inverter circuit. Generating a multilevel current waveform will have less harmonics content than a traditional three-level current waveform. In addition to non-ideal conditions of power switches, i.e. voltage drop in diodes, conductors or controlled switches, the performance of current controller applied in an inverter circuit will considerably affect the ac waveform quality produced by inverter circuit. This paper presents and discusses application of hysteresis current controller in the five-level H-bridge with inductor-cell current source inverter. The current controller performance was compared with the proportional integral current controller. Some test results are presented and discussed to explore the advantages of hysteresis controller in reducing the current ripple and harmonics distortion of output current.

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Suroso, Winasis, Priswanto, and Sholikhah. "Improving output current of inductor-cell based five-level CSI using hysteresis current controller." International Journal of Power Electronics and Drive System (IJPEDS) 12, no. 1 (2021): 249–57. https://doi.org/10.11591/ijpeds.v12.i1.pp249-257.

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Vijayalakshmi, K., and Chinnapettai Ramalingam Balamurugan. "Z–Source Multilevel Inverter Based on Embedded Controller." Indonesian Journal of Electrical Engineering and Computer Science 6, no. 1 (2017): 1. http://dx.doi.org/10.11591/ijeecs.v6.i1.pp1-8.

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In this paper Embedded based Z-source multilevel inverter (ZSMLI) is proposed. This work implements a five level cascaded H-bridge Z-source inverter by using embedded control. Switching devices are triggered using embedded controller. In this controller coding is described by using switching table. The presence of Z-source network couples inverter main circuit to the power source that providing special features that can overcome the limitations of VSI (voltage source inverter) and CSI (current source inverter). The Z-source concept can applicable in all dc-ac, dc-dc, ac-dc and ac-ac power conversions. Simulation model of Z-source multilevel inverter based on embedded controller has been built in MATLAB/SIMULINK. The Performance parameters of Z-source MLI such as RMS (root mean square) output voltage, THD (total harmonic distortion) and DC component have been analysed for various inductance (L) and capacitance (C) value.

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M., Aravindan, Balaji V., V. Saravanan, and M. Arumugam. "Neutral point clamped quasiZ source inverter for photovoltaic systems." International Journal of Applied Power Engineering 8, no. 3 (2019): 277–86. https://doi.org/10.11591/ijape.v8.i3.pp277-286.

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Multilevel inverters are becoming popular for power conversion in renewable energy systems, AC-DC hybrid micro grids etc. The voltage stress and inrush current through these inverter leg switches are quite higher as compared to the load ratings which increase the chances of inverter leg switch failure. A three level neutral point clamped quasi Z source inverter topology is discussed in this paper which has the features of lower component count, reduced capacitor voltage stress, and it can be operated at different control strategies to achieve wide range of voltage boosting ability, suited for photovoltaic (PV) systems. It also ensures continuous input current irrespective of the DC supply voltage variations and injects stable and smooth power to the load/grid. The effectiveness of the proposed inverter is verified by simulation results in MATLAB Simulink model as well as performing experiment with the help of a laboratory prototype.

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Gerald, .C. Diyoke, and Eya Candidus.U. "Modeling and Simulation of Five-Phase Induction Motor Fed With Pulse Width Modulated Five-Phase Multilevel Voltage Source Inverter Topologies." Journal of Advances in Electrical Devices 4, no. 2 (2019): 6–22. https://doi.org/10.5281/zenodo.3369578.

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This paper presents modelling and simulation of five-phase induction motor fed with pulse width modulated five-phase multilevel voltage source inverter. The conventional and diode clamped multilevel five-phase inverter configurations are reviewed with pulse width modulation (PWM) techniques. A hybrid three-level inverter topology with less number of components count is proposed for five-phase induction motor drive. The dynamic analysis of five-phase voltage equations in d-q axis of the induction motor are stated and modelled using Matlab/Simulink/Simscape blocks. The simulation results based on conventional and threelevel five-phase inverters are displayed while the hybrid inverter topology showed some better performance based on the following: : at 0.0127secs maximum torque of 34.54Nm occurred, maximum stator current occurred for 0.18secs with a value of 10A, 9.99% total harmonic distortion was obtained and 15KW power rating was obtained.

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Balal, Afshin, Saleh Dinkhah, Farzad Shahabi, Miguel Herrera, and Yao Lung Chuang. "A Review on Multilevel Inverter Topologies." Emerging Science Journal 6, no. 1 (2022): 185–200. http://dx.doi.org/10.28991/esj-2022-06-01-014.

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In this paper, a brief review of the multilevel inverter (MLI) topologies is presented. The two-level Voltage Source Inverter (VSI) requires a suitable filter to produce sinusoidal output waveforms. The high-frequency switching and the PWM method are used to create output waveforms with the least amount of ripples. Due to the switching losses, the traditional two-level inverter has some restrictions when running at high frequencies. For addressing this problem, multilevel inverters (MLI) with lower switching frequencies and reduced total harmonic distortion (THD) are employed, eliminating the requirement for filters and bulky transformers. Furthermore, improved performance at the high switching frequency, higher power quality (near to pure sinusoidal), and fewer switching losses are just a few of the benefits of MLI inverters. However, each switch has to have its own gate driver for implementing MLI, which adds to the system's complexity. Therefore, reducing the number of switches of MLI is necessary. This paper presents a review of some of the different current topologies using a lower number of switches. Doi: 10.28991/ESJ-2022-06-01-014 Full Text: PDF

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Rahul, Jammy Ramesh, Chinmay Kumar Das, Kirubakaran Annamalai, and Veeramraju Tirumala Somasekhar. "Impedance Source-based Multilevel Inverter: A State-of-the-Art Review." Journal of Circuits, Systems and Computers 29, no. 13 (2020): 2030011. http://dx.doi.org/10.1142/s0218126620300111.

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Impedance source-based multilevel inverters are becoming popular for emerging power generation technologies such as fuel cells, photovoltaic, and wind turbines. It is one of the most promising power electronic interfaces for single stage DC/AC conversion with inherent buck-boost capability. Therefore, in this paper, an extensive review of emerging impedance source-based multilevel inverter (Z-MLI) topologies is presented. These topologies are developed by the combination of impedance source network and multilevel inverter (MLI) with the merits of high voltage gain, enhanced reliability due to shoot-through immunity, improved input voltage regulation, reduced filter size, and better quality of supply. Most of the recent Z-MLI topologies are based on quasi-Z-source network which operates with continuous input current. In order to identify a suitable topology, an exhaustive comparison is made with various configurations of Z-MLIs in terms of component count, boost gain, switching stress, and control complexity.

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Tamilarasi, D., and T. S. Sivakumaran. "Analysis of Symmetrical and Asymmetrical Current Source Multilevel Inverter." Circuits and Systems 07, no. 11 (2016): 3469–84. http://dx.doi.org/10.4236/cs.2016.711295.

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M., Aravindan, Balaji V., Saravanan V., and Arumugam M. "Neutral point clamped quasi Z source inverter for photovoltaic systems." International Journal of Applied Power Engineering 8, no. 3 (2019): 277~286. https://doi.org/10.5281/zenodo.7359098.

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CHAITRALI, S. SHEDGE, and H. MADHAVI RAJENDRA. "THREE-LEVEL INVERTER CONTROLLED BY MEANS OF HYSTERESIS CURRENT CONTROL. APPLICATION TO GRID INTEGRATION." JournalNX - A Multidisciplinary Peer Reviewed Journal 2, no. 9 (2016): 5–9. https://doi.org/10.5281/zenodo.1468160.

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This paper describes the operational analysis results of a grid integration of distributed generation sources with an AC grid using multilevel inverter. The multilevel inverter is a three-level voltage source inverter (VSI), which is controlled by means of a novel vector hysteresis current control (V.H.C.C). The proposed V.H.C.C, which is based on error square areas, controls the three-phase load AC currents. The three load current errors are gathered into a single space vector quantity. In this case, the magnitude of the error vector is limited within boundary areas of a square shape. The control scheme is based on the detection of areas and sectors, in which the vector tip of the current error can be located. Then it applies an appropriate voltage vector among the 27 voltage vectors. Inherent advantages of current hysteresis controller are retained with the added advantage of adjacent voltage vector selection for hysteresis PWM control. Simple look-up tables are required for the detection of areas and sectors, and also for the vector selection. A detailed model of wind power generation, photo-voltaic generation and multilevel inverter with its current controlled SVPWM technique was implemented with a MATLAB. https://journalnx.com/journal-article/20150112

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Ali, Ali Riyadh, Rakan Khalil Antar, and Abdul Ghani Abdulrazzaq Abdulghafoor. "Harmonics mitigation technique for asymmetrical multilevel inverter fed by photovoltaic sources." Bulletin of Electrical Engineering and Informatics 13, no. 2 (2024): 865–73. http://dx.doi.org/10.11591/eei.v13i2.6607.

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A multilevel inverter is an electrical device that converts a DC voltage into a higher AC voltage by generating a stepped waveform with several voltage levels. Unlike traditional inverters that produce a square wave or a pulse-width modulated (PWM) waveform with only two voltage levels, multilevel inverters can generate waveforms with three or more levels, resulting in reduced harmonic distortion, improved efficiency, and decreased electromagnetic interference. The design and control of multilevel inverters are active research areas that aim to enhance their performance, reliability, and scalability. In this research, a 31-level asymmetric cascaded multilevel inverter is suggested. The proposed multilevel inverter (MLI) system employs four photovoltaic cells as dc sources with structure of (1:2:4:8) Vdc. The system is modeled by MATLAB/Simulink and total harmonic distortion (THD) values of the output voltage and current are 1.106% for resistive load, and 1.35% and 0.403% for inductive load. These outcomes demonstrate the recommended circuit's efficacy and demonstrate its suitability for medium- and high-power applications.

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Periyanayagam, Madasamy, Suresh Kumar V, Bharatiraja Chokkalingam, Sanjeevikumar Padmanaban, Lucian Mihet-Popa, and Yusuff Adedayo. "A Modified High Voltage Gain Quasi-Impedance Source Coupled Inductor Multilevel Inverter for Photovoltaic Application." Energies 13, no. 4 (2020): 874. http://dx.doi.org/10.3390/en13040874.

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The quasi-impedance source inverters/quasi-Z source inverters (Q-ZSIs) have shown improvement to overwhelmed shortcomings of regular voltage-source inverters (VSIs) and current-source inverters (CSIs) in terms of efficiency and buck-boost type operations. The Q-ZSIs encapsulated several significant merits against conventional ZSIs, i.e., realized buck/boost, inversion and power conditioning in a single power stage with improved reliability. The conventional inverters have two major problems; voltage harmonics and boosting capability, which make it impossible to prefer for renewable generation and general-purpose applications such as drive acceleration. This work has proposed a Q-ZSI with five-level six switches coupled inverter. The proposed Q-ZSI has the merits of operation, reduced passive components, higher voltage boosting capability and high efficiency. The modified space vector pulse width modulation (PWM) developed to achieve the desired control on the impedance network and inverter switching states. The proposed PWM integrates the boosting and regular inverter switching state within one sampling period. The PWM has merits such as reduction of coupled inductor size, total harmonic reduction with enhancing of the fundamental voltage profile. In comparison with other multilevel inverters (MLI), it utilizes only half of the power switch and a lower modulation index to attain higher voltage gain. The proposed inverter dealt with photovoltaic (PV) system for the stand-alone load. The proposed boost inverter topology, operating performance and control algorithm is theoretically investigated and validated through MATLAB/Simulink software and experimental upshots. The proposed topology is an attractive solution for the stand-alone and grid-connected system.

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Aravindan, M., V. Balaji, V. Saravanan, and M. Arumugam. "Neutral point clamped quasi Z source inverter for photovoltaic systems." International Journal of Applied Power Engineering (IJAPE) 8, no. 3 (2019): 277. http://dx.doi.org/10.11591/ijape.v8.i3.pp277-286.

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Multilevel inverters are becoming popular for power conversion in renewable energy systems, AC-DC hybrid micro grids etc. The voltage stress and inrush current through these inverter leg switches are quite higher as compared to the load ratings which increase the chances of inverter leg switch failure. A three level neutral point clamped quasi Z source inverter topology is discussed in this paper which has the features of lower component count, reduced capacitor voltage stress, and it can be operated at different control strategies to achieve wide range of voltage boosting ability, suited for photovoltaic (PV) systems. It also ensures continuous input current irrespective of the DC supply voltage variations and injects stable and smooth power to the load/grid. The effectiveness of the proposed inverter is verified by simulation results in MATLAB Simulink model as well as performing experiment with the help of a laboratory prototype.

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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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