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Back-EMF Estimation Methods for Permanent Magnet Motors with Non-sinusoidal Flux Distribution
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| Author(s) |
Kabziñski J., Krawiecki M., Wasiak G. |
| Abstract |
Permanent magnet synchronous motor has sinusoidal flux distribution (or back EMF waveform) and is able to produce a ripple-free torque. The precise and continuous rotor position is re-quired for the control algorithm. All concepts of speed/position observers are based on the as-sumption that the flux (or back EMF) is sinusoidal. How-ever, owing to manufacturing tolerances, even identical machines from the same production batch will differ in their back-EMF waveform, which does not necessarily ex-hibit a perfect sinusoid. We concentrate on modelling flux distribution deformity by introducing higher harmonics and propose several observer-based techniques for back-EMF on-line identification. |
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| Filename: | EPE-PEMC2000 - 283 - Kabzinski.pdf |
| Filesize: | 332.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-04-28 by System |
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