Controller of field winding type synchronous motor, electric drive system, electric four wheel driving vehicle, and hybrid automobile
US8073600B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2005 |
| Grant date | Dec 6, 2011 |
| Priority date | — |
| Expiry date | Feb 18, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A controller of a field winding type synchronous motor is provided that can stably output torque even if the d-axis current pulsates by reducing torque pulsation without causing fluctuation in the magnetic flux acting on the torque. A motor control unit 100 performs control so that a desired torque can be generated from a field winding type motor 20 having a field winding 22f on the rotor. Based on a current Id flowing in the d-axis direction out of the current flowing in a stator winding 22a of the field winding type motor 20, the motor control unit 100 calculates an induced voltage Vf2 being induced in the field winding 22f and compensates a field voltage Vf of the field winding based on the induced voltage Vf2, thus suppressing pulsation of the field current flowing in the field winding of the field winding type motor 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.