Title:
DRIVER FOR MOTOR, AND ELECTRIC MOTORCAR
Document Type and Number:
Japanese Patent JPH1189270
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make the responsiveness of control approximately constant even if battery voltage changes, and get specified motor property. SOLUTION: A chopper circuit 15 is interposed between a battery 14 and an inverter circuit 16. A motor 11 is driven by the inverter circuit 16. A battery voltage detecting circuit 32 is connected to the battery 14, and this driver is provided with an inverter circuit input voltage detecting circuit 33 on the input side of the inverter circuit 16. A control circuit 34 sets the loop gain of feedback control according to the battery voltage Vbat, and correts the loop gain so that the step-up chopper duty ratio and the inverter circuit input voltage Vdc may be in proportional relation, according to the ratio of the battery voltage Vbat to the inverter circuit input voltage Vdc at the time of boosting.
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Inventors:
HIRATA MASAMI
HASHIZUME SHOZO
HASHIZUME SHOZO
Application Number:
JP24260897A
Publication Date:
March 30, 1999
Filing Date:
September 08, 1997
Export Citation:
Assignee:
KANSAI ELECTRIC POWER CO
TOSHIBA CORP
TOSHIBA CORP
International Classes:
H02P6/06; H02P27/06; (IPC1-7): H02P6/06; H02P7/63
Attorney, Agent or Firm:
Tsuyoshi Sato
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