Title:
START CONTROL METHOD AND DEVICE FOR SYNCHRONOUS MOTOR, AND OPERATION FLUID CONTROL MOTOR-DRIVEN PUMP FOR CAR DRIVE SYSTEM USING THE DEVICE
Document Type and Number:
Japanese Patent JP3940267
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a start control method of a synchronous motor which has excellent start performance and can put the motor into a commutation mode in a short time.
SOLUTION: An AC current with a prescribed frequency is applied to a field winding 81 of a synchronous motor 8 by an inverter 91 to start the synchronous motor 8. The terminal voltage of the field winding 81 of the synchronous motor 8 at the starting time is detected. A voltage wave component according to the AC current given by the inverter is deducted from the detected voltage to correct the waveform in order to recognize a voltage wave component produced by a counter electromotive force (110). After the corrected waveform is integrated (111) and converted into a square waveform (111), the phase difference between the square waveform and an output of a 120° applied current waveform generating circuit 102 is detected by a phase difference detection circuit and is fed back.
Inventors:
Takatoshi Sakata
Yasui Yokoi
Yasui Yokoi
Application Number:
JP2001044677A
Publication Date:
July 04, 2007
Filing Date:
February 21, 2001
Export Citation:
Assignee:
JTEKT Corporation
Nippon Inverter Co., Ltd.
Nippon Inverter Co., Ltd.
International Classes:
F04B49/00; F04B49/02; H02P1/46; H02P1/52; H02P6/06; H02P6/08; H02P6/16; H02P6/182; H02P6/20; H02P21/34; H02P27/06; H02P27/08; (IPC1-7): H02P6/20; F04B49/00; H02P1/52; H02P6/16; H02P7/63
Domestic Patent References:
| JP2000287483A | ||||
| JP2000224887A | ||||
| JP3120678U | ||||
| JP10136687A |
Attorney, Agent or Firm:
Inaoka cultivation
Mio Kawasaki
Mio Kawasaki
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