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Power control for a PV generation system using a single-phase grid-connected quasi Z-source inverter

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4 Author(s)
Chun, T.W. ; Dept. of Electr. Eng., Univ. of Ulsan, Ulsan, South Korea ; Lee, H.H. ; Kim, H.-G. ; Nho, E.C.

This paper presents a photo-voltaic generation system using a single-phase grid-connected quasi Z-source inverter (QZSI). The method to track the maximum power point of the PV array by adjusting the shoot-through time of the QZSI is suggested. The modified switching patterns for controlling effectively the shoot-through time while reducing the switching loss are applied. The ac grid current controller with a resonant controller is designed in order to eliminate the steady-state error at the grid frequency, 60Hz. To confirm the effectiveness of proposed methods, some simulation results are shown.

Published in:

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Date of Conference:

May 30 2011-June 3 2011