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Author:

Samizadeh, Mehdi (Samizadeh, Mehdi.) | Yang, Xu (Yang, Xu.) | Karami, Bagher (Karami, Bagher.) | Chen, Wenjie (Chen, Wenjie.) | Houran, Mohamad Abou (Houran, Mohamad Abou.) | Abrishamifar, Adib (Abrishamifar, Adib.) | Rahmati, Abdolreza (Rahmati, Abdolreza.)

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Abstract:

A new switched-capacitor multilevel inverter (SCMLI) topology for grid-connected photovoltaic (PV) systems with eliminating the leakage current is presented in this study. Due to directly connecting the negative pole of the PV cells to the neutral line of the grid, the leakage current will be decreased to zero. The newest topologies for SCMLI are based on H-bridge stage; that means the common mode voltage in output is variable and leads to leakage current. The main advantages of this new topology are: (1) It does not need the boost stage; thus, it has light weight and small size. (2) The negative pole of the PV is directly connected to the neutral line of the grid, so the leakage current is eliminated. (3) Has good capability to conduct the reverse current from the inductive load to the dc source. (4) By using the Sinusoidal Pulse-Width Modulation (SPWM) technique the voltage of capacitors are self-balanced, thus this structure has the ability to be extended as n-level SCMLI and reduces the output filter size. The 9-level structure of the proposed inverter is simulated. The performance of which will be verified by MATLAB/SIMULINK software. © 2018 IEEJ Industry Application Society.

Keyword:

Grid-connected photovoltaic system Light weight and small sizes Matlab/Simulink software Modulation techniques Multilevel inverter Sinusoidal pulse width modulation step up Switched capacitor

Author Community:

  • [ 1 ] [Samizadeh, Mehdi;Yang, Xu;Chen, Wenjie;Houran, Mohamad Abou]Department of Electrical Engineering, Xi'An Jiaotong University, Xi'an, China
  • [ 2 ] [Karami, Bagher;Abrishamifar, Adib;Rahmati, Abdolreza]Department of Electrical Engineering, Iran University of Science and Technology, Tehran, Iran

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Source :

2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018

ISSN: 9784886864055

Year: 2018

Publish Date: October 22, 2018

Page: 2854-2859

Language: English

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count: 16

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 4

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