Design of a Discrete Flux Observer by the Power Series Approximation

Kyung-Seo Kim; Il-Han Kim

Design of a Discrete Flux Observer by the Power Series Approximation

Kyung-Seo Kim

Il-Han Kim

Vol. 11, No. 3, pp. 304-310, May 2011

10.6113/JPE.2011.11.3.304

Discrete Time Systems

Flux Observers

Induction motor drives

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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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Cite this article

[IEEE Style]

K. Kim and I. Kim, "Design of a Discrete Flux Observer by the Power Series Approximation," Journal of Power Electronics, vol. 11, no. 3, pp. 304-310, 2011. DOI: 10.6113/JPE.2011.11.3.304.

[ACM Style]

Kyung-Seo Kim and Il-Han Kim. 2011. Design of a Discrete Flux Observer by the Power Series Approximation. Journal of Power Electronics, 11, 3, (2011), 304-310. DOI: 10.6113/JPE.2011.11.3.304.