MODULATION FOR THREE-PHASE TRANSFORMERLESS NEUTRAL POINT CLAMPED INVERTER IN PHOTOVOLTAIC SYSTEMS

被引：0

作者：

Farias, A. M. ^{[1
]}

Oliveira, K. C. ^{[1
]}

Cavalcanti, M. C. ^{[1
]}

Neves, F. A. S. ^{[1
]}

机构：

[1] Fed Univ Pernambuco UFPE, DEE, Recife, PE, Brazil

来源：

XI BRAZILIAN POWER ELECTRONICS CONFERENCE (COBEP 2011) | 2011年

关键词：

Leakage currents; Photovoltaic power systems; Power convertors; PWM invertors; POWER-GENERATION SYSTEMS; MPPT PERFORMANCE;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

In this paper is proposed modulation techniques for reducing leakage current in grounded photovoltaic panels for three-phase transformerless neutral point clamped inverters, which appear if there is no galvanic isolation between the photovoltaic system and the electric grid. The control is done by applying appropriate pulse width modulation techniques, that are capable of reducing the leakage currents in photovoltaic systems by applying three medium vectors or using only two medium vectors and one specific zero vector to compose the reference vector. To validate the simulation models, an experimental three-phase inverter is used to evaluate leakage currents and the dc link voltage control.

引用

页码：850 / 857

页数：8

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