Title:
METHOD AND REGULATOR FOR ELECTRICAL RELUCTANCE MACHINES
Document Type and Number:
WIPO Patent Application WO1999009646
Kind Code:
A3
Abstract:
The invention relates to a process for estimating an instantaneous resistance in a phase winding in a reluctance machine. The process comprises the steps of: receiving a signal (Udm) indicating a voltage (UW) across at least one phase winding; receiving a signal (iWm) indicating a current (iw) through the phase winding; estimating a magnetic flux in response to the voltage signal and the current signal; estimating an instantaneous resistance (RW) in the phase winding in according with a phase relation between the current signal (iWm) and the magnetic flux signal ( PSI est). The invention also relates to a method for controlling an electrical machine and a drive system for performing the method.
Inventors:
ANDERSSON CHRISTER (SE)
STENDAHL HENRIK (SE)
STENDAHL HENRIK (SE)
Application Number:
PCT/SE1998/001483
Publication Date:
April 15, 1999
Filing Date:
August 18, 1998
Export Citation:
Assignee:
EMOTRON AB (SE)
ANDERSSON CHRISTER (SE)
STENDAHL HENRIK (SE)
ANDERSSON CHRISTER (SE)
STENDAHL HENRIK (SE)
International Classes:
H02P25/08; (IPC1-7): H02P6/18; H02P7/05
Domestic Patent References:
| WO1997011524A1 | 1997-03-27 |
Foreign References:
| US5321342A | 1994-06-14 |
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