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A grid connected photovoltaic system with irradiation injected current control

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3 Author(s)
Wang, J.B. ; Dept. of Electr. Eng., Ching Yun Univ. of Technol. ; Joe Chen ; Li, R.

A grid connected photovoltaic (PV) system, which consists of PV modules, a boost converter with maximum power point tracking (MPPT) controller and a current controlled full bridge inverter with L-C-L filter, is presented in this paper. A simple PIC16F877 microprocessor is used to implement the InCond MPPT controller by adjusted the duty ratio of the boost converter. Then a DC bus voltage controller is designed to regulate the DC bus voltage within the specified voltage, and generated the injected current command in proportion to the sunlight irradiation. Finally, a 150 W prototype grid connected PV system was built to demonstrate the performance of the proposed control schemes. In addition, some simulations and experimental results are also provided.

Published in:

Power Electronics, 2007. ICPE '07. 7th Internatonal Conference on

Date of Conference:

22-26 Oct. 2007