Robust Deadbeat Current Control Method for Three-Phase Voltage-Source Active Power Filter

Katsumi Nishida; Tarek Ahmed; Mutsuo Nakaoka

Robust Deadbeat Current Control Method for Three-Phase Voltage-Source Active Power Filter

Katsumi Nishida

Tarek Ahmed

Mutsuo Nakaoka

Vol. 4, No. 2, pp. 102-111, Apr. 2004

10.6113/JPE.2004.4.2.102

Active power filter

One-Dimensional Deadbeat Control Scheme

Adaptive Predictor

Robust control

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Abstract

This paper is concerned with a deadbeat current control implementation of shunt-type three-phase active power filter (APF). Although the one-dimensional deadbeat control method can attain time-optimal response of APF compensating current, one sampling period is actually required for its settling time. This delay is a serious drawback for this control technique. To cancel such a delay and one more delay caused by DSP execution time, the desired APF compensating current has to be predicted two sampling periods ahead. Therefore an adaptive predictor is adopted for the purpose of both predicting the control error of two sampling periods ahead and bringing the robustness to the deadbeat current control system. By adding the adaptive predictor output as an adjustment term to the reference value of half a source voltage period before, settling time is made short in a transient state. On the other hand, in a steady state, THD (total harmonic distortion) of the utility grid side AC source current can be reduced as much as possible, compared to the case that ideal identification of controlled system could be made.

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Cite this article

[IEEE Style]

K. Nishida, T. Ahmed, M. Nakaoka, "Robust Deadbeat Current Control Method for Three-Phase Voltage-Source Active Power Filter," Journal of Power Electronics, vol. 4, no. 2, pp. 102-111, 2004. DOI: 10.6113/JPE.2004.4.2.102.

[ACM Style]

Katsumi Nishida, Tarek Ahmed, and Mutsuo Nakaoka. 2004. Robust Deadbeat Current Control Method for Three-Phase Voltage-Source Active Power Filter. Journal of Power Electronics, 4, 2, (2004), 102-111. DOI: 10.6113/JPE.2004.4.2.102.