US 11,967,858 B2
Static transfer switch, and ups module to which static transfer switch is applied
Jiheon Lee, Anyang-si (KR); Dongjin Yun, Anyang-si (KR); Dohyun Kim, Anyang-si (KR); Jihong Kim, Anyang-si (KR); Minjun Park, Anyang-si (KR); and Wonseok Do, Anyang-si (KR)
Assigned to LS ELECTRIC CO., LTD., Anyang-si (KR)
Appl. No. 17/772,632
Filed by LS ELECTRIC CO., LTD., Anyang-si (KR)
PCT Filed Mar. 18, 2020, PCT No. PCT/KR2020/003679
§ 371(c)(1), (2) Date Apr. 28, 2022,
PCT Pub. No. WO2021/085759, PCT Pub. Date May 6, 2021.
Claims priority of application No. 10-2019-0136834 (KR), filed on Oct. 30, 2019.
Prior Publication US 2023/0034870 A1, Feb. 2, 2023
Int. Cl. H02J 9/06 (2006.01); H01H 9/54 (2006.01); H02M 1/00 (2006.01); H02M 7/145 (2006.01)
CPC H02J 9/061 (2013.01) [H01H 9/542 (2013.01); H02J 9/062 (2013.01); H02J 9/068 (2020.01); H02M 1/0067 (2021.05); H02M 7/145 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A switch comprising:
one semiconductor rectifier element connected to either one of a positive terminal and a negative terminal of a DC power source;
a bypass electric circuit that connects an input terminal and an output terminal of the semiconductor rectifier element to bypass the semiconductor rectifier element;
a breaker that opens or closes the bypass electric circuit; and
a control unit that controls the semiconductor rectifier element to conduct a current, and controls the breaker to close the bypass electric circuit when a preset conduction signal is received, and controls the semiconductor rectifier element to stop the conduction of the current when the bypass electric circuit is closed by the breaker, and
wherein the control unit controls the semiconductor rectifier element and the breaker at the same time according to the conduction signal, detects whether the bypass electric circuit is closed when a current is first conducted through the semiconductor rectifier element due to an operating speed difference between the semiconductor rectifier element and the breaker, and controls the semiconductor rectifier element to stop the conduction of the current according to the detection result.