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A robust power decoupler and maximum power point tracker topology for a grid-connected photovoltaic system

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4 Author(s)
Khajehoddin, S.A. ; Energy & Power Electron. Appl. Res. Lab., Queen''s Univ., Kingston, ON ; Bakhshai, A. ; Jain, P. ; Drobnik, J.

The exponential growth in the number of photovoltaic (PV) system installations verifies that solar power technology has become one of the promising energy resources. This paper introduces new control scheme and converter topology for low to medium power PV applications. Proposed topology provides independent MPPT and power decoupling without the use of bulky electrolytic capacitors. The grid-connected output stage is a current source inverter with a modified modulation strategy to inject a low harmonic current into the grid at unity power factor. Simulation results are presented to show the effectiveness of the proposed method in terms of MPPT, power decoupling and power injection into the grid at a high quality.

Published in:

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

Date of Conference:

15-19 June 2008