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A robust current control method with disturbance observer for matrix converter under abnormal input voltage
Author(s) -
Oka Kazuo,
Matsuse Kouki
Publication year - 2007
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.20194
Subject(s) - control theory (sociology) , voltage , current (fluid) , computer science , observer (physics) , voltage source , inductance , disturbance voltage , engineering , control (management) , voltage droop , physics , electrical engineering , quantum mechanics , artificial intelligence
This paper presents a robust current control method with a disturbance observer for a matrix converter (MC) under an abnormal input voltage. The MC can directly convert power from an input alternating current (AC) source to a load without any direct current (DC) link. Since the MC has no reactive elements, the imbalance and distortion of the input voltage immediately influence the load. Therefore, a high‐performance current control of the load is impossible in this condition. In this letter, we propose a robust current control method for the MC under an abnormal input voltage. Adapting the disturbance observer to a load current control, current control is possible without the influence of the imbalance and distortion of the input voltage and of a fluctuation of a load paramerter, a resistance, an inductance and so on. This current control is robust under these conditions. The proposed method is effective for the application of a high‐performance AC motor drive employing vector control because it is necessary for the proposed method to coordinate with a reference frame. The validity of the proposed method is confirmed by simulation results. © 2007 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.