POWER CONVERSION DEVICE

WIPO Patent Application WO/2013/073026

A1

The purpose of the present invention is to suppress the mutual interference between current controllers, and suppress a response to a motor current command and a low-frequency component of a motor current due to the voltage error of a power converter and the like to thereby control the torque of a motor by an adequate response and suppress the low-frequency component of the motor current. To this end, a power conversion device is provided with a power converter for outputting alternating-current voltage on the basis of a voltage command and driving a motor, and a control means for outputting the voltage command such that the torque of the motor matches a torque command, the control means being configured such that when the torque command changes, the rise times of the torque when an angular frequency corresponding to a rotation speed is higher than an angular frequency corresponding to a torque response and when the angular frequency corresponding to the rotation speed is lower become equal, and direct-current components superimposed on an output current on the condition that direct-current disturbance is applied to the output voltage of the power converter become equal.

ISHIDA SEIJI (JP)
KANEKO SATORU (JP)
TOBARI KAZUAKI (JP)

PCT/JP2011/076432

May 23, 2013

November 16, 2011

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HITACHI LTD (JP)
ISHIDA SEIJI (JP)
KANEKO SATORU (JP)
TOBARI KAZUAKI (JP)

H02P29/00

JP2011211815A	2011-10-20
JP2009017676A	2009-01-22
JP2007221896A	2007-08-30

POLAIRE I. P. C. (JP)
Polaire Intellectual Property Corporation (JP)

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