Self-Sensing Methods from MEMs to Solar Aircraft Motors

In order to control the speed and/or position of permanent magnet (PM) motors, they require position sensors. Basically, the auto-commutation needs 3 sensors for a 3-phase motor. In micro-motors, as there is no space for the sensors, self-sensing must be used. With big motors, suppression of the sensors enhances the overall reliability. The motor becomes a sensor itself and electromagnetic phenomena are explored to detect the rotor position. These phenomena are magnetic saturation, back-EMF detection, eddy currents and/or magnetic anisotropy. The present paper will describe the technique used to detect the rotor position in micro electromechanical systems (MEMs) and a solar aircraft motor.

Published in:
Icems 2008: Proceedings Of The 11Th International Conference On Electrical Machines And Systems, Vols 1- 8, 3680-3684
Presented at:
11th International Conference on Electrical Machines and Systems, Wuhan, PEOPLES R CHINA, Oct 17-20, 2008
Wuhan, China, World Publishing Corporation, 137 Chaonei Dajie, Beijing 100010, Peoples R China

 Record created 2010-11-30, last modified 2018-03-17

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