Title:
INVERTER CONTROLLER FOR DRIVING MOTOR AND APPARATUS EMPLOYING THE SAME
Document Type and Number:
Japanese Patent JP2008160915
Kind Code:
A
Abstract:
To provide an inverter controller for driving a motor satisfactorily by reducing impact of ambient temperature variation thereby enhancing precision in detecting a phase current of the motor.
In an inverter for driving a motor by inverting a DC voltage into an AC three-phase voltage, offset voltage of a DC current detector outputting a voltage according to a current flowing through an inverter bus is regulated when all the PWM signals for controlling the upper arm switching elements of an inverter are entirely turned on or off during driving of the motor.
Inventors:
MATSUSHIRO HIDEO
Application Number:
JP2006344086A
Publication Date:
July 10, 2008
Filing Date:
December 21, 2006
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
H02P27/06; H02M7/537
Domestic Patent References:
| JP2004135441A | 2004-04-30 |
Foreign References:
| WO2006103869A1 | 2006-10-05 |
Attorney, Agent or Firm:
Fumio Iwahashi
Hiroki Naito
Daisuke Nagano
Hiroki Naito
Daisuke Nagano