Exploitation of iron B-H local hysteresis for the rotor position detection of a PM motor

In this paper it is shown that the phase self inductance and resistance, both measured at a high frequency, of a permanent magnet (PM) motor with non-salient rotor vary slightly with the rotor position. The origin of these variations is deeply investigated, taking into account typical physical phenomena present in PM motor. Surprisingly, no classical approach can explain these variations. The physical explication is found in the non-linearity of the iron magnetization B-H curve, and more accurately in the local B-H hysteresis loops. In order to exploit these small variations for the rotor position detection, a simple measurement technique is presented.


Published in:
2009 Ieee International Electric Machines & Drives Conference, Vols 1-3, 1635-1640
Presented at:
IEEE International Electric Machines and Drives Conference (IEMDC 2009), Miami, FL, May 03-06, 2009
Year:
2009
Publisher:
Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa
ISBN:
978-1-4244-4251-5
Keywords:
Laboratories:




 Record created 2012-01-12, last modified 2018-03-17


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)