Title :
Realization study of interleaved PV microinverter by quadrature-phase-shift SPWM control
Author :
Hung-I Hsieh ; Guan-Cyun Hsieh ; Jiaxin Hou
Author_Institution :
Dept. of Electr. Eng., Nat. Chiayi Univ., Chiayi, Taiwan
Abstract :
A PV microinverter implemented using interleaved flyback converter (IFC) is investigated. Double-frequency distortion is found in grid current because of using sawtooth time-based SPWM. A forward compensation circuit that eliminates the distortion at primary side is explored that simplifies the output filter design. Maximum power transfer between PV module, IFC, and grid end is modeled. An elaborate experiment is demonstrated to verify the analysis result and performance predictions.
Keywords :
PWM invertors; PWM power convertors; compensation; power grids; solar cells; IFC; PV module; double-frequency distortion elimination; filter design; forward compensation circuit; grid current; interleaved PV microinverter; interleaved flyback converter; power transfer; quadrature phase shift SPWM Control; sawtooth time-based SPWM; Arrays; Nickel; MPPT; PV microinverter; SPWM; interleaved flyback converter;
Conference_Titel :
Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE-ASIA), 2014 International
Conference_Location :
Hiroshima
DOI :
10.1109/IPEC.2014.6869634
