Title :
Current harmonic minimization of a grid-connected photovoltaic 500kW three-phase inverter using PR control
Author :
Song, Byeong-Mun ; Kim, Youngroc ; Cha, Hanju ; Lee, Hakju
Author_Institution :
Dept. of Electr. & Comput. Eng., Baylor Univ., Waco, TX, USA
Abstract :
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.
Keywords :
electric current control; harmonic distortion; harmonics suppression; invertors; photovoltaic power systems; power filters; power generation control; power grids; LC filter; PR current control strategy; current harmonic minimization; grid-connected photovoltaic three-phase inverter; low current total harmonics distortion; power 500 kW; proportional resonant controller; Current control; Harmonic analysis; Inverters; Power harmonic filters; Resonant frequency; Vectors; Voltage control;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2011 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
978-1-4577-0542-7
DOI :
10.1109/ECCE.2011.6063891
