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Title:
MOTOR DRIVE SYSTEM AND MOTOR DRIVE METHOD
Document Type and Number:
Japanese Patent JP2012205350
Kind Code:
A
Abstract:

To provide a motor drive system and a motor drive method, capable of suppressing the magnitude of regenerative capacitance in a stop operation of a motor.

A motor drive system comprises: a deceleration rate calculation device for calculating, for a reduction rate of the number of revolutions of a motor, a variable-deceleration rate set so that regenerative capacitance of a voltage supply device required for conversion from a regenerative DC voltage to an AC voltage has a constant value, and a constant-deceleration rate having a constant reduction rate set so that the motor stops in a predetermined stop time; and a control device for controlling a motor drive device to decelerate the motor according to the variable-deceleration rate from starting of a stop operation of the motor until a time when the number of revolutions of the motor becomes the same between at the variable-deceleration rate and at the constant-deceleration rate, and then decelerate the motor according to the constant-deceleration rate.


Inventors:
MORIYAMA AKIHITO
Application Number:
JP2011000065921
Publication Date:
October 22, 2012
Filing Date:
March 24, 2011
Export Citation:
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Assignee:
TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEM CORP
International Classes:
H02P3/00; H02P27/06
Domestic Patent References:
JP2004135421A2004-04-30
JPH11164589A1999-06-18
JPH05336778A1993-12-17
JP2005031877A2005-02-03
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu