A Single-Stage PV Module Integrated Converter Based on a Low-Power Current-Source Inverter

Author

Sahan, Benjamin ; Vergara, Antonio Notholt ; Henze, Norbert ; Engler, Alfred ; Zacharias, Peter

Author_Institution

Inst. for Solar Energy Technol., Univ. of Kassel, Kassel

Volume

55

Issue

7

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

2602

Lastpage

2609

Abstract

This paper presents a transformerless three-phase inverter designed for the integration into a special type of a photovoltaic (PV) module, which is capable of providing an output voltage of several hundred volts. The chosen topology, a current-source inverter, features a single-stage power conversion system that directly feeds into the grid. The principle operation and control is described, and a modified modulation strategy is proposed to attenuate common-mode currents. A robust and highly efficient laboratory prototype of a 250-W module integrated converter has been implemented and tested. Its compact and flat design allows the direct attachment to the PV module.

Keywords

invertors; photovoltaic power systems; power convertors; attenuate common-mode currents; low-power current-source inverter; modified modulation strategy; photovoltaic module; power 250 W; single-stage PV module integrated converter; transformerless three-phase inverter; Feeds; Inverters; Laboratories; Photovoltaic systems; Power conversion; Prototypes; Robustness; Solar power generation; Testing; Topology; Alternating current (AC) module; current-source inverter (CSI); photovoltaic (PV) power systems; pulsewidth-modulated (PWM) inverters;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2008.924160

Filename

4550678