Motor drive device and drive method

Details Motor drive device and drive method Motor drive device and drive method

2008-07-22

2008-07-22

Duda, Rina I (Department: 2837)

Electricity: motive power systems

Induction motor systems

C318S461000, C318S599000, C318S811000

Reexamination Certificate

active

07402975

ABSTRACT:
A rise in the power supply voltage as a result of a sudden speed reducing command causing the motor current to flow to the power supply is prevented. The motor drive device has a drive signal generating unit for generating a drive signal by an energizing control unit, PWM control unit, and oscillation unit; a drive unit for producing drive power to drive the motor based on the drive signal; a torque control signal generating unit for generating a torque control signal specifying the motor torque; a speed detection unit for detecting the rotational speed of the motor and generating a rotational speed signal denoting motor speed information; and a decision unit for generating a speed difference detection signal denoting the difference between the torque control signal and the rotational speed signal. The drive signal generating unit is controlled based on the speed difference detection signal.

REFERENCES:
patent: 4868479 (1989-09-01), Byong-Ho et al.
patent: 5309078 (1994-05-01), Cameron
patent: 6315081 (2001-11-01), Yeo
patent: 6700343 (2004-03-01), Masaki et al.
patent: 2003/0222615 (2003-12-01), Aono et al.
patent: 2004/0201358 (2004-10-01), Kawaji et al.

Affiliated with

Also associated with

Rating

Motor drive device and drive method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Motor drive device and drive method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Motor drive device and drive method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2770842