Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Design of a Discrete Flux Observer by the Power Series Approximation

  • Received : 2010.12.14
  • Published : 2011.05.20
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Abstract

The power series approximation method is proposed for real time implementations of a discrete flux observer. The proposed method improves the performance of the discrete flux observer in the case of a low sampling rate and high speed range, where the simple discrete flux observer converted by the Euler method cannot estimate the actual flux precisely. The performance of discrete flux observers with different orders of approximation is compared to find out the proper order of approximation. The validity of the proposed method is verified through simulation and experiment.

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References

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  2. Discrete Rotor Flux and Speed Estimators for High-Speed Shaft-Sensorless IM Drives vol.61, pp.6, 2014, https://doi.org/10.1109/TIE.2013.2258311