Title:
POSITION SENSORLESS CONTROL ALGORITHM FOR AC MACHINE
Document Type and Number:
WIPO Patent Application WO2005002036
Kind Code:
A3
Abstract:
A control system for an electric motor having a stator and rotor including an inverter for providing power to the electric motor, a controller for controlling the inverter, a low speed control block to estimate the rotor angular position using stator current components operating in the controller, a high speed control block to estimate the rotor angular position using stator current components and stator flux position operating in the controller, a transition switch in the controller to vary operation between the low speed control block and the high speed control block, and where the inverter is controlled by six step operation.
Inventors:
SCHULZ STEVEN E
PATEL NITINKUMAR R
NAGASHIMA JAMES M
SUL SEUNG KI
BAE BON-HO
PATEL NITINKUMAR R
NAGASHIMA JAMES M
SUL SEUNG KI
BAE BON-HO
Application Number:
PCT/US2004/019940
Publication Date:
April 28, 2005
Filing Date:
June 22, 2004
Export Citation:
Assignee:
GEN MOTORS CORP (US)
International Classes:
H02P6/18; H02P21/00; (IPC1-7): H02P5/28
Foreign References:
| US6763622B2 | 2004-07-20 | |||
| US6724168B2 | 2004-04-20 | |||
| US6163127A | 2000-12-19 | |||
| US6137258A | 2000-10-24 | |||
| US5115418A | 1992-05-19 |
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