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Sensorless Direct Torque and Flux Control of an IPM Synchronous Motor at Low Speed and Standstill
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| Author(s) |
Gilbert Foo, S. Sayeef and M. F. Rahman |
| Abstract |
This paper investigates a sensorless direct torque and flux control (DTFC) scheme for IPM synchronous motor (IPMSM) drives at low speed and standstill. Closedloop control of both the torque and stator flux linkage are achieved using two proportional-integral (PI) controllers. A high frequency signal injection technique is utilized at low speeds to obtain the rotor position information. The hybrid current-voltage model flux observer with a smooth handover algorithm estimates the stator flux linkage over the whole speed range. The sensorless method is capable of zero-speed full load operation. Experimental results confirm the effectiveness of the proposed sensorless SVM-DTFC system. |
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| Filename: | 469.pdf |
| Filesize: | 369 KB |
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| Type |
Members Only |
| Date |
Last modified 2008-12-07 by System |
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