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A New Asymmetric Switched-Capacitor Inverter for Photovoltaic Systems

  • Mehdi Samizadeh
  • , Xiaoteng Li
  • , Xu Yang
  • , Bagher Karami
  • , Wenjie Chen
  • , Alaaeldin Hassan
  • , Mohamad Abou Houran
  • , Majid Kamranian
  • Xi’an iaotong University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

This paper presents a new switched-capacitor multi-level inverter (SCMLI) for photovoltaic systems which can eliminate the leakage current. The traditional SCMLI suffer from the H-Bridge to obtain negative levels, which create variable common mode voltage (CMV) and so generates the leakage current. Here, by direct connection the negative polarity of the DC source to the neutral point of the grid, it can guaranty giving constant CMV and then eliminating the leakage current. In this topology, without applying any extra circuit, all capacitors can be charged in binary asymmetrical structure, then, by reducing the number of components, it has aimed to increase the output levels with acceptable total harmonic distortion (THD). The other advantages of propose topology are that; it has the capability to boost the voltage as well as conduct the reverse current to the PV. To confirm the validity of the proposed topology, some simulation results for 15-level inverter by using MATLAB/SIMULINK software are given.

Original languageEnglish
Title of host publication2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages443-447
Number of pages5
ISBN (Electronic)9781728153018
DOIs
StatePublished - 29 Nov 2020
Externally publishedYes
Event9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia - Nanjing, China
Duration: 29 Nov 20202 Dec 2020

Publication series

Name2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia

Conference

Conference9th IEEE International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia
Country/TerritoryChina
CityNanjing
Period29/11/202/12/20

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Multilevel inverter
  • SPWM modulation technique
  • common mode voltage
  • leakage current
  • switched capacitor

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