MOTOR DRIVING DEVICE AND LAUNDRY TREATMENT MACHINE INCLUDING THE SAME

The present invention relates to a motor driving device and a laundry treatment machine including the same. According to an embodiment of the present invention, the motor driving device comprises: an inverter to convert a direct current to an alternating current by a switching and to output the conv...

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Bibliographische Detailangaben
Hauptverfasser:	LEE, JUN HO, LEE, CHUNG ILL, JE, JUNG MOON
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR GENERATION LAUNDERING LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILEARTICLES TEXTILES TREATMENT OF TEXTILES OR THE LIKE
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Beschreibung
Zusammenfassung:	The present invention relates to a motor driving device and a laundry treatment machine including the same. According to an embodiment of the present invention, the motor driving device comprises: an inverter to convert a direct current to an alternating current by a switching and to output the converted alternating current to the motor; an output voltage detecting unit to detect the output voltage applied to the motor; and a control unit to control the inverter based on the detected output voltage. The control unit changes a carrier frequency, and changes a voltage command based on the varied carrier frequency, to output an inverter switching control signal to the inverter based on the varied carrier frequency and the voltage command. As such, the present invention is able to reduce noises caused by driving the motor. 본 발명은 모터구동장치, 및 이를 구비하는 세탁물 처리기기에 관한 것이다. 본 발명의 실시예에 따른 모터구동장치는, 스위칭 동작에 의해, 직류 전원을 교류 전원으로 변환하고, 변환된 교류 전원을 모터에 출력하는 인버터와, 모터에 흐르는 출력 전류를 검출하는 출력 전류 검출부와, 검출되는 출력 전류에 기초하여, 인버터를 제어는 제어부를 포함하고, 제어부는, 반송파 주파수를 가변하며, 반송파 주파수 가변에 기초하여, 전압 지령치를 가변하며, 가변된 반송파 주파수 및 전압 지령치에 기초하여, 인버터에 인버터 스위칭 제어 신호를 출력한다. 이에 따라, 모터 구동시 소음을 저감할 수 있게 된다.