Title:
DC POWER BREAKER FOR PHOTOVOLTAIC POWER GENERATION
Document Type and Number:
WIPO Patent Application WO/2022/059976
Kind Code:
A1
Abstract:
The present invention relates to a DC power breaker for photovoltaic power generation installed between a plurality of photovoltaic modules and a connection panel and, more particularly, to a DC power breaker for photovoltaic power generation comprising: a mechanical switch, installed in a string connected between each of the photovoltaic power modules and the connection panel, for switching on and off between the photovoltaic power modules and the connection panel; a semiconductor switch connected between each of the photovoltaic modules and the mechanical switch to switch off between a (+) string and a (-) string during photovoltaic power generation, and conducting electricity between the (+) string and the (-) string when an abnormal situation is detected; and a control unit for detecting the abnormal situation through at least one of an abnormal current flowing into the connection panel, a flash generated within the connection panel, and the temperature of the connection panel, and controlling the semiconductor switch and the mechanical switch, wherein when the abnormal situation occurs in a state in which the semiconductor switch and the mechanical switch are turned on, the semiconductor switch is turned off and then the mechanical switch is turned off.
Inventors:
LEE SANG WON (KR)
KWON WOO HYUN (KR)
KWON WOO HYUN (KR)
Application Number:
PCT/KR2021/011863
Publication Date:
March 24, 2022
Filing Date:
September 02, 2021
Export Citation:
Assignee:
DIGITAL KOREA CO LTD (KR)
International Classes:
H02H3/087; H02H7/20; H02M7/48; H02S40/32; H02S40/34
Domestic Patent References:
| WO2014033868A1 | 2014-03-06 |
Foreign References:
| JP2018100877A | 2018-06-28 | |||
| KR101677930B1 | 2016-11-21 | |||
| KR20180131683A | 2018-12-11 | |||
| JP2014509396A | 2014-04-17 | |||
| KR102224181B1 | 2021-03-09 |
Attorney, Agent or Firm:
LEE, Seung Chan et al. (KR)
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