MOTOR DRIVE DEVICE

WIPO Patent Application WO/2010/004971

A1

Provided is a motor drive device (10) for driving and controlling a motor (M).  The motor (M) has one electrode to which a DC voltage is applied from a DC power source and the other electrode grounded via a switching transistor (22).  The switching transistor (22) is turned ON and OFF using a PWM signal so as to drive the motor (M) and control rpm thereof.  The motor drive device includes a common mode cancel circuit (30) which detects a voltage change of the switching transistor (22) and subtracts a voltage based on the detected voltage change from the voltages of the both electrodes (Ma, Mb) of the motor (M) so as to suppress a common mode current flowing into the motor (M).

SUZUKI HITOSHI (JP)
HORIKOSHI KAZUHIKO (JP)
ONDA HIDEAKI (JP)
OKAZAKI FUMIHIRO (JP)
ANZAI TAKESHI (JP)
HARA MITSUO (JP)
OGASAWARA SHOICHI (JP)
OGASAWARA TAKESHI (JP)
TERAZAWA JUNICHIROU (JP)
SANO MASAHIRO (JP)

PCT/JP2009/062330

January 14, 2010

July 07, 2009

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CALSONIC KANSEI CORP (JP)
SUZUKI HITOSHI (JP)
HORIKOSHI KAZUHIKO (JP)
ONDA HIDEAKI (JP)
OKAZAKI FUMIHIRO (JP)
ANZAI TAKESHI (JP)
HARA MITSUO (JP)
OGASAWARA SHOICHI (JP)
OGASAWARA TAKESHI (JP)
TERAZAWA JUNICHIROU (JP)
SANO MASAHIRO (JP)

H02M1/12; H02M1/44; H02M7/48; H02P7/29; H02P21/05; H02P23/04; H02P27/06; H02P27/08

JP2006333647A	2006-12-07
JPH10241976A	1998-09-11
JP2001333582A	2001-11-30

NISHIWAKI, Tamio (JP)
Tamio Nishiwaki (JP)

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