Title:
PHOTOVOLTAIC POWER GENERATION SYSTEM AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/199667
Kind Code:
A1
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.
Inventors:
KIM HYOSUNG (KR)
Application Number:
PCT/KR2018/004882
Publication Date:
November 01, 2018
Filing Date:
April 26, 2018
Export Citation:
Assignee:
NAT UNIV KONGJU IND UNIV COOP FOUND (KR)
International Classes:
G05F1/67; H02M1/14; H02M3/155; H02S40/30; H02S50/10
Foreign References:
| JP2014081921A | 2014-05-08 | |||
| JP2012533105A | 2012-12-20 | |||
| KR20160075054A | 2016-06-29 | |||
| US20140192568A1 | 2014-07-10 | |||
| KR20060134235A | 2006-12-28 |
Attorney, Agent or Firm:
KIM, Jin Dong (KR)
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