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The Effects of Saturation on Sensorless Flux Angle Estimation
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| Author(s) |
M. L. Aime; M. W. Degner; N. Tice; D. Lorenz Robert |
| Abstract |
This paper analyzes sensorless,
direct field oriented control techniques that use
saturation-induced saliencies for the estimation
of flux angle in induction machine drives. Flux
angle estimation based on saturation-induced
saliencies relies on the fact that there is a known
relationship between the position of the saliency
and the flux angle being estimated. This paper
first introduces a simple technique for measuring
the saliency position under all operating
conditions. From these experimental results and
theoretical analysis it is shown that the position
of saturation-induced saliencies are not fixed
relative to any single component of flux in the
machine and move significantly with changes in
the operating point. This movement of the
saliency position relative to the desired flux
angle must be modeled for correct, sensorless,
direct field oriented control. |
| Download |
| Filename: | EPE1999 - PP00790 - Lorenz Robert.pdf |
| Filesize: | 96.33 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-30 by System |
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