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NONLINEAR FIELD ORIENTED CONTROL IN A ROTOR REFERENCE FRAME
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| Author(s) |
P. J. Coussens; A. P. Van den Bossche; J. A. Melkebeek |
| Abstract |
Field oriented control for a squirrel cage motor can be implemented, in many different ways. Most systems employ a reference frame fixed to the estimated flux (e.g. rotor flux). However, for an indirect rotor flux based system a reference frame fixed to the rotor has a lot of advantages. By this approach the calculations for the vector rotations can be performed. in hardware. This frees up calculation capacity on the controlling microprocessor which can then be used to implement a nonlinear motor model. This paper describes the actual implementation of a field oriented control in a reference frame fixed to the rotor. The rotor flux is estimated using a nonlinear approximation. The performance has been verified by measurements and simulations. The proposed method has possibilities for on-line rotor resistance estimation. |
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| Filename: | Unnamed file |
| Filesize: | 364.5 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-05-16 by System |
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