期刊
IEEE TRANSACTIONS ON POWER ELECTRONICS
卷 38, 期 2, 页码 2022-2031出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2022.3217306
关键词
Rectifiers; Voltage control; Frequency control; Power harmonic filters; Phase locked loops; Harmonic analysis; Frequency modulation; Three-phase buck rectifier; unbalanced input phase voltages; wide ac input frequency
In thisarticle, a reconstructed phase voltages based power following control for thethree-phase buck rectifier under unbalanced input phase voltages in wide acinput frequency application is proposed. The control strategy is simple andeasy to be realized in digital. The experimental results show that thesinusoidal input currents can be obtained when input phase voltages areunbalanced in wide ac input frequency application.
In wide ac input frequency applications, such as more electric aircraft, ac input frequency of the three-phase buck rectifier varies in the range of 360-800 Hz. In this article, a reconstructed phase voltages based power following control for the three-phase buck rectifier under unbalanced input phase voltages in wide ac input frequency application is proposed. The input phase voltages are reconstructed to get more balanced modulation signals compared with the input phase voltages. The input currents are controlled to be in proportion to the reconstructed phase voltages to mitigate the imbalance of the input currents. The control strategy is simple and easy to be realized in digital. The analysis and design of the proposed control strategy and digital implementation are illustrated. An experimental prototype with 1.5 kW is built. The experimental results show that the sinusoidal input currents can be obtained when input phase voltages are unbalanced in wide ac input frequency application.
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