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A NEW METHOD OF STATOR RESISTANCE ESTIMATION FOR ENHANCED DYNAMIC PERFORMANCE OF SENSORLESS VECTOR CONTROL DRIVES
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| Author(s) |
R. Blasco-Gimenez; G. M. Asher; M. Sumner |
| Abstract |
This paper describes a new methodology to estimate the stator resistance of induction machines for enhanced performance of sensorless vector control drives. To achieve this, the effect of incorrect stator resistance on the performance of a sensorless drive during transients through or near zero speed is analyzed. It has been found that the use of an inaccurate stator resistance will cause the estimated machine flux to deviate from a circular trajectory centred at the origin. This deviation will in turn cause undesired oscillations on the estimated flux magnitude and flux angle. The aforementioned deviation is used to obtain an instantaneous estimation of the stator resistance. This deviation is corrected for and the dynamic performance of a sensorless vector control scheme based on these flux estimates is enhanced. |
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| Filename: | Unnamed file |
| Filesize: | 373.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2018-05-16 by System |
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