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FLUX, POSITION, AND VELOCITY ESTIMATION IN AC MACHINES AT ZERO AND LOW SPEED VIA TRACKING OF HIGH FREQUENCY SALIENCIES
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| Author(s) |
P. L. Jansen; M. J. Corley; R. D. Lorenz |
| Abstract |
This paper presents an elegantly simple and viable generalized approach to achieving robust, accurate transducerless state estimation in polyphase AC machines, including
the estimation of flux, position, and velocity in induction and synchronous machines at zero and low speeds. lt is based upon the tracking of magnetic saliencies via inverter-generated
high-frequency signal injection with demodulation incorporating heterodyning and a closed loop
observer. The saliencies may be saturation-induced, thus yielding a means of direct flux position estimation, or rotor-constructed and thus yielding rotor position and velocity estimation. Experimental results are provided demonstrating rotor positi9n estimation with a permanent magnet synchronous motor. |
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| Filename: | Unnamed file |
| Filesize: | 627 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-04-10 by System |
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