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Control of Single-Phase Grid-Connected Photovoltaic System using a Z-Source Inverter  

Chun, Tae-Won (울산대 전기전자정보시스템공학부)
Tran, Quang-Vinh (울산대 대학원 전기공학과)
Kim, Heung-Geun (경북대 전자전기공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.13, no.5, 2008 , pp. 369-375 More about this Journal
Abstract
In this paper, a method for controlling the a single-phase grid-connected photovoltaic(PV) system using Z-source inverter (ZSI) is proposed. The operating region of grid-connected ZSI system with a variation of PV output voltage are analyzed by considering the voltage stress across switching devices. The switching patterns for controlling effectively the shoot-through time while reducing the switching loss are suggested. Both the simulation studies and experimental results with 32-bit DSP are carried out to verify the performances of proposed system.
Keywords
Grid connected; Switching pattern; Voltage stress; ZSI (Z-source inverter);
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