Title: A device and a method for driving the motor of a washing machine
Application Number: 200610149361 Application Date: 2006.11.17
Publication Number: 1966827 Publication Date: 2007.05.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: D06F39/00;D06F23/00;H02P27/02
Applicant(s) Name: LG Electronics Inc. Address:
Inventor(s) Name: Jun Cha Seung
Attorney & Agent: zhangyu ru
Abstract:
    A driving device and a method of driving a washing machine is disclosed. The efficiency of the motor of the washing machine is enhanced and the capacity of an inverter is reduced thereby reducing manufacturing costs. The driving device includes a variable motor, of which the rotational speed varies to apply a driving force to a drum to rotate, an inverter to convert a direct current voltage into an alternating current voltage and to vary a voltage applied to the variable motor, and an inverter driver to compare a control signal with a carrier to drive the inverter by pulse width modulation. A frequency of the carrier wave is varied for the pulse width modulation.
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