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Title: Current distortion mitigation in grid-connected Vienna rectifier during nonunity power factor operation
Authors: Molligoda, Devinda A.
Pou, Josep
Ceballos, Salvador
Satpathi, Kuntal
Sasongko, Firman
Gajanayake, Chandana J.
Gupta, Amit Kumar
Keywords: Engineering::Electrical and electronic engineering::Power electronics
Issue Date: 2020
Source: Molligoda, D. A., Pou, J., Ceballos, S., Satpathi, K., Sasongko, F., Gajanayake, C. J., & Gupta, A. K. (2020). Current distortion mitigation in grid-connected Vienna rectifier during nonunity power factor operation. Proceedings of the Annual Conference of the IEEE Industrial Electronics Society (IECON), 4085-4090. doi: 10.1109/IECON43393.2020.9255341
Abstract: The Vienna rectifier is an attractive converter solution due to the three-level voltage generation and its simple structure. When the Vienna rectifier operates with nonunity power factor, the reference voltage and the input current have different signs during some intervals around the current zero crossings. This creates low-frequency distortion in the current waveforms. One of the preferable methods to reduce this distortion is the zero sequence injection which, however, risks the converter entering into overmodulation. This paper analyses the above distortion and introduces the operation of the Vienna rectifier in two modes, which includes injecting a proper zero sequence and reactive power compensation. This allows the converter to operate in a wide range of power factors without constraining the modulation index. The required reactive current is obtained analytically from the instantaneous values of the converter at any operating point.
DOI: 10.1109/IECON43393.2020.9255341
Rights: © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at:
Fulltext Permission: open
Fulltext Availability: With Fulltext
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