Three-Dimensional Coordinate Transformation Theory for Three-Phase Four-Wire Unbalanced Power Electronic System

This paper proposes a three-dimensional coordinate transformation theory, which can convert three-phase unbalanced ac quantities into balanced two-phase orthogonal ac quantities and one constant dc quantity, and these three quantities can be further converted into three constant dc quantities by usi...

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Bibliographic Details
Published in2021 IEEE 4th International Electrical and Energy Conference (CIEEC) pp. 1 - 6
Main Authors Tan, Guangjun, Chen, Zhi, Zhang, Ying, Wei, Jinlong, Zeng, Xuyang, Sun, Xiaofeng
Format Conference Proceeding
LanguageEnglish
Published IEEE 28.05.2021
Subjects
Conferences
four-leg converter
four-wire converter
PI control
Power electronics
three-dimensional coordinate transformation
Three-dimensional displays
unbalanced power electronic system
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Summary:This paper proposes a three-dimensional coordinate transformation theory, which can convert three-phase unbalanced ac quantities into balanced two-phase orthogonal ac quantities and one constant dc quantity, and these three quantities can be further converted into three constant dc quantities by using three-dimensional Park coordinate transformation. By applying the proposed three-dimensional coordinate transformation along with three-dimensional Park coordinate transformation to three-phase four-wire or four-leg unbalanced ac power electronic systems, these ac power electronic systems can be directly converted into dc power electronic systems, so the proportional-integral controllers can be employed to realize the error-free control of the three-phase unbalanced currents for these ac power electronic systems.
DOI:10.1109/CIEEC50170.2021.9511080