Motor driving apparatus

A motor driving apparatus is provided. The motor driving apparatus includes an offset voltage generating unit which generates an offset voltage with a small magnitude in comparison with an input voltage; an offset current sensing unit which senses the magnitude change of an offset voltage generated...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KANG, HAN BYUL, YOO, HWA WOONG, CHOI, CHUL HOON, KIM, MIN SU
Format: Patent
Sprache:eng ; kor
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Beschreibung
Zusammenfassung:A motor driving apparatus is provided. The motor driving apparatus includes an offset voltage generating unit which generates an offset voltage with a small magnitude in comparison with an input voltage; an offset current sensing unit which senses the magnitude change of an offset voltage generated according to the application of the generated offset voltage to a motor; and a switching unit which supplies the input voltage to an inverter by switching a path of the input voltage according to a time constant of the sensed current. Accordingly, the present invention can check a fault in the motor by using the offset voltage. 모터 구동 장치를 제공한다. 모터 구동 장치는 입력 전압에 비하여 작은 크기를 갖는 오프셋 전압을 생성하는 오프셋 전압 생성부와, 상기 생성된 오프셋 전압을 모터에 인가함에 따라 발생된 오프셋 전류의 크기 변화를 감지하는 오프셋 전류 감지부, 및 상기 감지된 전류의 시정수에 따라 상기 입력 전압의 경로를 스위칭하여 상기 모터에 연결된 인버터로 공급하는 스위칭부를 포함한다.