ASYNCHRONOUS UNINTERRUPTIBLE AUTOMATIC TRANSFER SWITCHES

The present invention relates to an asynchronous uninterruptible automatic switching device. The asynchronous uninterruptible automatic switching device according to the present invention comprises: a first power source voltage sensing unit for sensing a voltage on a first power source line which is connected with a first power source; a second power source voltage sensing unit for sensing a voltage on a second power source line which is connected with a second power source; a first power source switching unit which is connected with the first power source line and performs switching on the first power source which is supplied to a load; a second switching unit which is connected with the second power source line and performs switching on the second power source which is supplied to the load; a switching operation sensing unit for sensing the operation of the first power source switching unit and the second power source switching unit; and a control unit which receives sensing signals from the first power source voltage sensing unit, the second power source voltage sensing unit, and the switching operation sensing unit to determine a power supply failure of the first power source and the second power source, and controls the switching operation of the first power source and the second power source in an asynchronous manner irrespective of whether the first power source has in-phase with the second power source, such that one of the first power source and the second power source is supplied to the load. Each of the first power source line and the second power source line includes at least one phase line and a neutral line. Each of the first power source switching unit and the second power source switching unit includes a switch connected with the at least one phase line and a switch connected with the neutral line. According to the present invention, the power sources can be stably switched even at an asynchronous state irrespective of whether phases of the power sources are matched or not. 본 발명은 비동기 무정전 자동 절환 장치에 관한 것으로, 제1전원과 연결된 제1전원라인의 전압을 감지하기 위한 제1전원전압감지부; 제2전원과 연결된 제2전원라인의 전압을 감지하기 위한 제2전원전압감지부; 상기 제1전원라인에 연결되어, 상기 부하측으로 공급되는 상기 제1전원을 스위칭하기 위한 제1전원스위칭부; 상기 제2전원라인에 연결되어, 상기 부하측으로 공급되는 상기 제2전원을 스위칭하기 위한 제2전원스위칭부; 상기 제1전원스위칭부와 상기 제2전원스위칭부의 동작을 감지하기 위한 스위칭동작감지부; 및 상기 제1전원전압감지부, 상기 제2전원전압감지부, 상기 스위칭동작감지부로부터 감지신호를 입력받아, 상기 제1전원과 상기 제2전원의 전원 공급 이상 여부를 판단하고, 상기 제1전원과 상기 제2전원의 동위상 여부에 관계없이 비동기식으로 상기 제1전원스위칭부와 상기 제2전원스위칭부의 스위칭 동작을 제어하여 상기 부하측으로 상기 제1전원과 상기 제2전