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Comparison of Practical Performance and Limits of Sensorless IM Drive Using a Closed Loop Flux Observer and a Full Order Flux Observer
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| Author(s) |
K. Ohyama; G. M. Asher; M. Sumner |
| Abstract |
This paper compares the experimental performance of three flux and speed observers for speedsensorless
induction motor drives. The three methods are generally accepted to be leading candidates
for high sensorless performance: rotor-flux MRAS, torque-current MRAS and the adaptive non-linear
flux observer. The paper discusses baseline conditions for the tests: these include matched load inertia,
specified speed estimator dynamics and sensorless operation within a speed control loop. For the
comparison tests in the paper, the speed estimation dynamics of the methods are approximately the
same; this is important for parameter sensitivity. The paper concentrates on tests for zero and low
speed performance and all results shown are under sensorless speed control. |
| Download |
| Filename: | EPE1999 - PP00741 - Ohyama.pdf |
| Filesize: | 173.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-30 by System |
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