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Generalized Switched-Capacitor Step-up multilevel inverter Employing Single DC Source

CSEE Journal of Power and Energy Systems 2022年第2期8卷 439-451页

作者： Yaoqiang Wang Kaige Wang Gen Li Fengjiang Wu Kewen Wang Jun Liang the School of Electrical Engineering Zhengzhou UniversityZhengzhou 450001China the Henan Engineering Research Center of Power Electronics and Energy Systems Zhengzhou 450001China Zhengzhou University Zhengzhou 450001China Zhoukou Power Supply Company State Grid Henan Electric Power Co.Ltd.Zhoukou 466000China Cardiff University Cardiff CF243AAU.K the Department of Electrical Engineering Harbin Institute of TechnologyHarbin 150001China

In this paper,a new generalized step-up multilevel DC-AC converter is proposed,which is suitable for applications with low-voltage input sources,such as photovoltaic power generation and electric *** inverter can achieve a high voltage gain by controlling the series-parallel conversion of the DC power supply and *** one DC voltage source and a few power devices are *** maximum output voltage and the number of output levels can be further increased through the switched-capacitor unit’s extension and the submodule cascaded ***,the capacitor voltages are self-balanced without complicated voltage control *** complementary operating mechanism between each pair of switches simplifies the modulation *** inductiveload ability is fully taken into account in the proposed ***,a remarkable characteristic of the inverter is that the charging and discharging states among different capacitors are synchronous,which reduces the voltage ripple of the frontend *** circuit structure,the working principle,the modulation strategy,the capacitors and losses analysis are presented in ***,the advantages of the proposed inverter are analyzed by comparing with other recently proposed ***,the steady-state and dynamic performance of the proposed inverter is verified and validated by simulation and experiment.

关键词： Modulation strategy multilevel inverter single DC source switched capacitor voltage self-balancing

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A Sensor-less Surface Mounted PMSM for Electronic Speed Control in multilevel inverter

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Intelligent Automation & Soft Computing 2023年第5期36卷 2201-2215页

作者： S.Dinesh Kumar A.Jagadeeshwaran Karthikeya Polytechnic College ManapparaiTamil Nadu621306India Department of Electrical and Electronics Engineering Sona College of TechnologySalemTamil Nadu636005India

Recent advancements in power electronics technology evolves inverter fed electric *** signals and rotor position are essential for controlling an electric motor *** this paper,the sensorless speed control of surface-mounted permanent magnet synchronous motor(SPMSM)has been *** wants a digital inverter for its precise ***,this study incor-poratesﬁfteen level inverter to the SPMSM.A sliding mode observer(SMO)based sensorless speed control scheme is projected to determine rotor spot and speed of the multilevel inverter(MLI)fed *** has been operated using a multi carrier pulse width modulation(MCPWM)strategy for generation ofﬁf-teen level *** simulation works are executed with MATLAB/SIMU-LINK *** steadiness and the heftiness of the projected model have been investigated under no loaded and loaded situations of ***,the projected method can be adapted for electric vehicles.

关键词： Surface-mounted permanent magnet synchronous motor sensorless speed control multilevel inverter torque estimation multi carrier pulse width modulation

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A Novel Topology of Hybrid multilevel inverter with Minimum Number of Separated DC Sources

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Journal of Shanghai University(English Edition) 2004年第2期8卷 199-202页

作者：江友华曹以龙龚幼民 School of Electromechanical Engineering and Automation

multilevel inverter has become increasingly popular in recent years due to advantages of high power quality waveforms, low switching losses, and high-voltage capability. A novel multilevel inverter with minimum number of separated DC sources is presented in this paper. Three-phase output voltages of this inverter can easily be balanced because they are synthesized by using the same DC sources. A harmonic reduction method eliminating both the 5th and 7th harmonics is proposed. Finally, comparison results and spectral analysis are presented. Key words multilevel inverter - topology - DC source - harmonic reduction - spectrum Project supported by the Postdoctoral Science Foundation of Shanghai (Grant No. kO7)

关键词： multilevel inverter topology DC source harmonic reduction spectrum

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Hybrid Control Strategy for BCD Topology Based Modular multilevel inverter

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Circuits and Systems 2016年第8期7卷 1441-1454页

作者： Vasudevan Karthikeyan gopal Jamuna Electrical and Electronics Engineering Department Dhanalakshmi Srinivasan College of Engineering and Technology Chennai India Electrical and Electronics Engineering Department Jerusalem College of Engineering Chennai India

In this paper, a Binary Coded Decimal (BCD) topology of modular multilevel inverter with reduced component count is proposed. For the control of this inverter, hybrid control strategy is used. The proposed modular multilevel inverter uses asymmetrical dc sources and reduced number of switches topology. This hybrid modulation technique uses the multicarrier based Pulse Width Modulation (PWM) and the fundamental frequency modulation strategy. The hybrid modulation algorithm is implemented with “NUC140” micro-controller. In comparison with the conventional and some of the recently reported inverter topologies, the proposed inverter topology is able to generate high number of voltage levels in the output by using minimum number of components such as dc sources, power switches and driver circuits. This inverter offers significant performance with less number of components. The feasibility of the proposed topology is confirmed by simulation and experimental results.

关键词： multilevel inverter Reduced Components Hybrid PWM Asymmetrical dc Sources Harmonic Distortion

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Analysis of Symmetrical and Asymmetrical Current Source multilevel inverter

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Circuits and Systems 2016年第11期7卷 3469-3484页

作者： D. Tamilarasi T. S. Sivakumaran Department of EEE Anna University Chennai India Department of EEE Arunai College of Engineering Tiruvannamalai India

The paper proposes a Current Source multilevel inverter (CSMLI) with single rating inductor topology. multilevel inverters are most familiar with power converter’s applications due to reduced dv/dt, di/dt stress, and very efficient for reducing harmonic distortion in the output voltage and output current. The proposed nine-level current source inverter has been tested under symmetrical and asymmetrical modes of operation, and their activities are compared using PI and Fuzzy PI (Proportional Integral) controllers with multicarrier PWM (Pulse Width Modulation) strategy. MATLAB/Simulink simulation has been made for the proposed converter to obtain its performance measures. Some experimental results are given to verify the presented Current Source multilevel inverter.

关键词： Current Source inverter multilevel inverter Multicarrier PWM Total Harmonic Dis-tortion Fuzzy PI Controller

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Harmonic Minimization in Seven Level Cascaded multilevel inverter Using Selective Harmonic Elimination PWM Techniques

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Circuits and Systems 2016年第14期7卷 4322-4330页

作者： V. R. Velmurugan Jeyabharath Rajaiah Veena Parasunath Department of EEE PAC Ramasamy Raja Polytechnic College Rajapalayam India Department of EEE KSR Institute for Engineering and Technology Namakkal India

This paper concentrates on enhancing the productivity of the multilevel inverter and nature of yield voltage waveform. Seven level lessened switches topology has been actualized with just seven switches. Essential Switching plan and Selective Harmonics Elimination were executed to diminish the Total Harmonics Distortion (THD) esteem. Selective Harmonics Elimination Stepped Waveform (SHESW) strategy is executed to dispense with the lower order harmonics. Fundamental switching plan is utilized to control the switches in the inverter. The proposed topology is reasonable for any number of levels. The harmonic lessening is accomplished by selecting fitting switching angles. It indicates would like to decrease starting expense and unpredictability consequently it is able for modern applications. In this paper, third and fifth level harmonics have been disposed of. Simulation work is done utilizing the MATLAB/Simulink programming results have been displayed to accept the hypothesis.

关键词： multilevel inverter PSIM Fundamental Switching Scheme Selective Harmonics Elimination

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Harmonic Minimization in Seven-Level Cascaded multilevel inverter Using Evolutionary Algorithm

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Circuits and Systems 2016年第9期7卷 2309-2322页

作者： Jeyabharath Rajaiah Velmurugan Ramar Veena Parasunath Department of EEE KSR Institute for Engineering and Technology Tamilnadu India Department of EEE PAC Ramasamy Raja Polytechnic College Tamilnadu India

inverters are power electronic devices that change over DC to sinusoidal AC quantity. Be that as it may, in down to earth, these devices produce non-sinusoidal yield which contains harmonics, so as to blend a close sinusoidal component and to lessen the harmonic distortion multilevel inverters developed. Mathematical methods, which were developed, are derivative based and need initial considerations. To overcome this, evolutionary algorithms, which are derivative free and accurate, were developed for obtaining multi levels of output voltage. The proposed work uses two evolutionary algorithms, namely, Genetic Algorithm (GA) and Particle Swarm Optimization (PSO) algorithm. These algorithms are used to generate the switching angles by satisfying the non linear transcendental equations that govern the low order harmonic components. A seven level cascaded full bridge inverter is designed using MATLAB/Simulink and the results validate the results for switching angles. The Total Harmonic Distortion (THD) value obtained for GA and PSO is 11.81% and 10.84% respectively. The solution obtained from GA algorithm was implemented in hardware using dsPIC controller to validate the simulation results. The THD value obtained for cascaded seven-level multilevel inverter in the hardware prototype is 25.9%.

关键词： multilevel inverter Selective Harmonic Elimination Genetic Algorithm Particle Swarm Optimization Harmonic Minimization

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Intelligent-Based Maximum Power Extraction on Grid-Integrated multilevel inverter-Fed Wind-Driven Induction Generators

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Circuits and Systems 2016年第9期7卷 2551-2567页

作者： B. Meenakshi Sundaram B. V. Manikandan H. Habeebullah Sait Department of Electrical and Electronics Engineering Sethu Institute of Technology Kariapatti Tamil Nadu India Department of Electrical and Electronics Engineering Mepco Schlenk Engineering College Sivakasi Tamil Nadu India Department of Electrical and Electronics Engineering Anna University BIT Campus Tiruchirappalli Tamil Nadu India

This paper presents an intelligent controller employing Adaptive Neuro-Fuzzy Inference System (ANFIS) for extracting maximum power from the wind energy conversion system even during the change in the wind speed conditions with improved quality of power. The proposed induction generator with multilevel inverter along with intelligent controller based Maximum Power Point Tracking (MPPT) technique aims at integrating winds system with improved maximum power injection and minimum harmonic issues. The proposed method will improve the power quality which is delivered to the grid in terms of harmonic, and inject the maximum power to the grid. To validate the effectiveness of the proposed control strategy, ANFIS controller, Fuzzy Inference System (FIS) and without MPPT controller have been presented and tested using MATLAB/Simulink environment.

关键词： Wind Energy multilevel inverter MPPT Technique ANFIS FIS Harmonics

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Research on Cascaded multilevel inverter With Regenerative Operation

Research on Cascaded Multilevel Inverter With Regenerative O...

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2010 Chinese Control and Decision Conference

作者： Bin Xu~1,Dan Yang~2,Xu Wang~2 1.Computing Center,Northeastern University,Shenyang,110004 2.School of Information Science and Engineering,Northeastern University,Shenyang,110004

＜正＞The paper presents detailed modeling and simulation of cascaded H-bridge multilevel inverter with regenerative operation to meet the need of several applications like downhill conveyors,elevators and energy plants. The inverter system can operate with a bidirectional power flow and maintain the dc bus voltage *** control method of inverter system has been analyzed detailed.A simulation model has been built to demonstrate the inverter system and the Modulation and control techniques have been *** simulation result validates the proposed control *** system has some feature such as simplifying the transformer design,independent control of the active and reactive power,precise control the dc voltage.

关键词： multilevel inverter active front end regenerative operation power converter

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Fast Online Diagnosis of Open-circuit Switching Faults in Flying Capacitor multilevel inverters

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Chinese Journal of Electrical Engineering 2020年第4期6卷 53-62页

作者： Majid T.Fard Waqar A.Khan Jiangbiao He Nathan Weise Mostafa Abarzadeh Department of Electrical and Computer Engineering University of KentuckyLexingtonKY 40506USA Department of Electrical and Computer Engineering Marquette UniversityMilwaukeeWI 53233USA

Flying capacitor multilevel(FCML)inverter is an attractive power converter topology which provides high-quality staircase output voltage waveforms by cascading flying capacitor ***,the large number of semiconductor devices utilized in the FCML inverters degrades the hardware reliability,which may constrain such converters from being applied in safety-critical *** at open-circuit switching faults,a fast online fault diagnostic method for FCML inverters is *** phase-shifted PWM(PSPWM),which can naturally balance the voltage across flying capacitors,is used as the modulation method in this ***,to retain the simplicity feature of the PSPWM,the proposed diagnostic method is developed so that it does not require any voltage measurements of flying *** the output AC voltage and current data along with the switching PWM signals from the microcontroller are needed to detect an open-circuit switching fault,and all such sensory data is typically available in the inverter,requiring no additional sensors or hardware for the implementation of this diagnostic *** detection process takes 5% of the fundamental period of the inverter output signals to diagnose the faulty *** and experimental results are presented to verify the effectiveness of the proposed diagnostic method.

关键词： Open-circuit fault diagnosis flying capacitor multilevel inverter wide bandgap devices PSPWM

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