Patent ID: 11967858
Assignee: LS ELECTRIC CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
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.