Driving device of a washing machine and a method of driving...

Details Driving device of a washing machine and a method of driving... Driving device of a washing machine and a method of driving...

2006-11-16

2010-10-26

Stinson, Frankie L (Department: 1711)

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

C068S140000

Reexamination Certificate

active

07818983

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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