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1. (WO2018199667) PHOTOVOLTAIC POWER GENERATION SYSTEM AND CONTROL METHOD THEREFOR

Pub. No.:    WO/2018/199667    International Application No.:    PCT/KR2018/004882
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Fri Apr 27 01:59:59 CEST 2018
IPC: G05F 1/67
H02M 3/155
H02M 1/14
H02S 50/10
H02S 40/30
Applicants: KONGJU NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
공주대학교 산학협력단
Inventors: KIM, Hyosung
김효성
Title: PHOTOVOLTAIC POWER GENERATION SYSTEM AND CONTROL METHOD THEREFOR
Abstract:
The present invention relates to a photovoltaic power generation system, and the system comprises: a current sensing unit for sensing and outputting current of an output terminal on one side of a solar battery panel; a voltage output unit for sensing and outputting voltage between output terminals on both sides of the solar battery panel; a scan control unit including a capacitor located between the output terminals on both sides of the solar battery panel, a switching element, and at least one resistor, wherein a discharging operation and a charging operation of the capacitor are controlled according to a turn-on or turn-off state of the switching element; and a maximum power point tracking control device which is connected to the current sensing unit, a voltage sensing unit, and the scan control unit, controls a turn-on operation and a turn-off operation of the switching element, determines a panel output current and a panel output voltage of the solar battery panel by using signals applied from the current sensing unit and the voltage sensing unit when the capacitor performs a discharging or charging operation, and calculates a panel power by using the determined panel output current and panel output voltage, so as to perform a maximum power point tracking operation.