SYNCHRONOUS MOTOR CONTROL DEVICE FOR ELECTRIC AUTOMOBILE

Title:

SYNCHRONOUS MOTOR CONTROL DEVICE FOR ELECTRIC AUTOMOBILE

Document Type and Number:

WIPO Patent Application WO/2014/119492

Kind Code:

A1

Abstract:

Provided is a highly practical synchronous motor control device for an electric automobile that is capable of suppressing a torque ripple through simple arithmetic operations. A synchronous motor control device (1) for controlling a synchronous motor (2) for traveling is provided with a torque ripple compensation means (3) that adds a correction current having a sine wave of an opposite phase to that of a torque ripple to a motor drive current, said torque ripple having a frequency six times as high as a rotation speed of the motor (2) and generated in the motor (2). Specifically, in the case of a configuration involving a basic control unit (9) for vector control, the torque ripple compensation means (3) outputs a correction current command (iq_c) and uses a value (iq_ref) that is obtained by adding the correction current command to a q-axis current command in order to carry out the control.

Inventors:

NAKAJIMA AKIO (JP)
ZHANG YINGJIE (JP)

Application Number:

PCT/JP2014/051583

Publication Date:

August 07, 2014

Filing Date:

January 24, 2014

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

H02P6/08; H02P6/06; H02P6/10; H02P6/28; H02P21/00; H02P21/05; H02P21/13; H02P21/22; H02P23/04; H02P27/04; H02P27/08

Domestic Patent References:

WO2006106642A1

2006-10-12

Foreign References:

JP2009106069A	2009-05-14
JPS6439269A	1989-02-09
JP2007267466A	2007-10-11

Other References: