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Single-source Switched-capacitor Boost Nine-level Inverter with Reduced Components

CSEE Journal of Power and Energy Systems 2023年第5期9卷 1688-1697页

作者： Kaibalya Prasad panda R.T.Naayagi Pravat Kumar Ray gayadhar panda the Department of Electrical Engineering Pandit Deendayal Energy UniversityGandhinagar 382007India the School of Electrical and Electronic Engineering Newcastle University International Singapore567739Singapore the Department of Electrical Engineering National Institute of Technology RourkelaRourkela 769008India the Department of Electrical Engineering National Institute of Technology MeghalayaShillong 793003India

Increasing demands for improvement in power quality and power capacity have contributed to development of switched-capacitor multilevel inverters(SCMLIs).Recently developed SCMLIs enable single-stage voltage boosting,as well as inversion resulting in step-up ac *** reduction in number of components,this paper introduces a boost type singlesource nine-level(9-level)SCMLI employing two capacitors and three *** to the series-parallel connection process,capacitor voltages are inherently balanced and assist in quadruple voltage boosting from a *** voltage stress across semiconductor devices is limited to twice input voltage *** a minimum number of components,the proposed SCMLI can be extended to increase voltage levels without additional dc *** extension module adds two additional voltage steps in the output while maintaining maximum voltage stress the same as 9-level *** by in-depth analysis of circuit operation and power losses,a thorough comparison of recently developed single-phase 9-level MLIs is carried out,which verifies design *** simulation and experimental results are presented to verify the prominent features of the 9-level SCMLI under dynamic operating conditions.

关键词： Multilevel inverter reduced components,self-voltage balance single-source switched-capacitor voltage gain

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