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A NEW ROTOR POSITION ESTIMATION METHOD FOR SWITCHED RELUCTANCE MOTORS USING PWM VOLTAGE CONTROL
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| Author(s) |
G. Gallegos-Lopez; P. C. Kjaer; T. J. E. Miller |
| Abstract |
The paper describes a new method for indirect sensing of the rotor position in switched reluctance motors using PWM voltage control. The detection method uses the change of the derivative of the phase current to detect the position where a rotor pole and stator pole start to overlap. As no a priori knowledge of motor parameteres is required, the method is applicable to most SRM topologies in a wide power and speed range and for several inverter topologies. It allows medium dynamics. To start up the motor, feedforward method is used which assures
robust start-up even under load. The method is comparable to the back EMF position estimation for brushless DC motors. Experimental results demonstrate the robust functionality of the method. |
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| Filename: | Unnamed file |
| Filesize: | 541.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-04-05 by System |
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