Title:
CONTROL APPARATUS OF SYNCHRONOUS MOTOR AND VEHICLE USING THE SAME
Document Type and Number:
Japanese Patent JP3681318
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a motor control apparatus which eliminates the need for a signal application for the position detection and can achieve the magnetic pole position detection of a synchronous motor while operating an usual PWM (pulse width modulation) control with inexpensive digital arithmetic units such as a microcomputer.
SOLUTION: In the digital arithmetic unit 4, there is provided with the position detection means 14 which detects the magnetic pole position of the synchronous motor 1 based on a motor current differential value when the synchronous motor 1 is in a state of short circuit. The unit 4 generates a interrupt trigger signal in synchronism with a PWM signal driving a inverter 3 and starts an A/D converter then inputs an electric current of the synchronous motor 1.
Inventors:
Satoru Kaneko
Ryozo Masaki
Yasuo Morooka
Ryozo Masaki
Yasuo Morooka
Application Number:
JP2000056046A
Publication Date:
August 10, 2005
Filing Date:
February 28, 2000
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
B60L9/18; B60L11/18; B60L15/02; H02M7/48; H02P21/00; H02P21/22; H02P23/16; H02P27/04; H02P27/08; (IPC1-7): H02P21/00; B60L9/18; H02M7/48
Domestic Patent References:
| JP9271198A | ||||
| JP8280199A |
Attorney, Agent or Firm:
Yukihiko Takada
Masaru Takenouchi
Masaru Takenouchi
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