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Virtual HF Injection Method For PMSM Rotor Position Determination Acting In Whole Speed Range
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| Author(s) |
R. Filka, B. Dobrucky, J. Vittek |
| Abstract |
The paper describes a new combined method for
determination of PM synchronous motor rotor position. Well
known magnetic saliency method is used at zero speed. Then a
new developed method, based on virtual hf signal injection, is
exploited for low speed range. The special modulation strategy
has been proposed form this purpose. Its main idea is to
decompose the stator voltage into two fundamental components:
the basic low frequency voltage component and virtual high
frequency injection component. The second one is assumed as
sinusoidal with constant high frequency. This voltage causes
the current response, which after subtraction from measured
stator current will contain the high frequency component.
From this component after filtering it is possible to extract the
information about rotor position for the rotating motor. |
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| Filename: | A71403 |
| Filesize: | 439.8 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-17 by System |
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