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Current harmonic minimization of a grid-connected photovoltaic 500kW three-phase inverter using PR control

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4 Author(s)
Byeong-Mun Song ; Dept. of Electr. & Comput. Eng., Baylor Univ., Waco, TX, USA ; Youngroc Kim ; Hanju Cha ; Hakju Lee

This paper presents a new current control strategy to minimize the current harmonics of a photovoltaic (PV) 500kW three-phase inverter using a proportional resonant (PR) controller. The new PR current control strategy is developed and implemented to a grid-connected three-phase inverter with LC filter. The controller resulted in a low current total harmonics distortion (THD) of 3% to meet the grid requirement. For the validation, simulation and experimental results showed that the proposed PR controller achieved a low THD over a wide range of operation under 500kW power flow. The detail design of the proposed controller is presented.

Published in:

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Date of Conference:

17-22 Sept. 2011