Title :
Implicit rotor position sensing using search coils for a self-commutating permanent magnet drive system
Author :
Binns, K.J. ; Al-Aubidy, Kasim M. ; Shimmin, D.W.
Author_Institution :
Dept. of Electr. & Electron. Eng., Liverpool Univ., UK
fDate :
7/1/1990 12:00:00 AM
Abstract :
A novel form of rotor position sensing is described that makes use of a simple search coil system in a permanent magnetic machine. It can be used for almost any field configuration and permanent magnet material provided that there is a reluctance variation between the direct and quadrature axes. Practical results are presented for a particular rotor configuration. A closed-loop speed control system gives precise speed control and operation at high efficiency. This enables a complete drive system to be implemented, involving torque angle control for optimal performance
Keywords :
electric drives; machine control; permanent magnet motors; rotors; torque control; velocity control; closed-loop speed control system; permanent magnet drive system; reluctance variation; rotor position sensing; search coils; self-commutating system; torque angle control;
Journal_Title :
Electric Power Applications, IEE Proceedings B
