Title:
CURRENT COMMAND GENERATOR FOR SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JPS6149679
Kind Code:
A
Abstract:
PURPOSE:To suppress a starting current flowed to a motor without pulsating of a motor torque by reducing a slip target frequency at motor starting time. CONSTITUTION:A slip frequency command generator 42 has a slip frequency calculator 48, a slip frequency corrector 50. The corrector 50 calculates a slip frequency command WS controlled to be reduced from the normal frequency at the motor starting time. Thus, the slip target frequency is reduced at the starting time of the motor 10, thereby decreasing a drive current flowed from an inverter main circuit 12. Accordingly, an excess motor drive current is not flowed at the motor starting time, thereby preventing a defect due to the cause. Since the amplitude control of a conveying triangular signal is not performed and the slip frequency WS decreases, no pulsation occurs in the motor torque.
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Inventors:
IMAZEKI TAKASHI
Application Number:
JP16909884A
Publication Date:
March 11, 1986
Filing Date:
August 13, 1984
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
H02P27/06; H02P21/00; H02P21/05; H02P21/22; H02P21/34; H02P23/04; H02P23/07; H02P25/02; H02P27/08; (IPC1-7): H02P5/41
Domestic Patent References:
| JPS5967895A | 1984-04-17 |
Attorney, Agent or Firm:
Shigenori Wada