Step-up and Step-down Asymmetrical 24-Pulse Autotransformer Rectifier

Lu Zhang; Hong-juan Ge; Fan Jiang; Guang Yang; Yi Lin

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자료유형: 학술저널

저자정보: Lu Zhang (Nanjing University of Aeronautics and Astronautics) Hong-juan Ge (Nanjing University of Aeronautics and Astronautics) Fan Jiang (Nanjing University of Aeronautics and Astronautics) Guang Yang (Nanjing University of Aeronautics and Astronautics) Yi Lin (Nanjing University of Aeronautics and Astronautics)

저널정보: 전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.18 No.5

발행연도: 2018.9

수록면: 1,536 - 1,544 (9page)

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The existing 24-pulse autotransformer rectifier unit (ATRU) needs interphase reactors for parallel work of the rectifier bridges, and its output voltage cannot be regulated. Aiming at these problems, a step-up and step-down asymmetrical 24-pulse ATRU is proposed in this paper. The connections and turns ratios among transformer windings are well designed. In addition, a 15-degree phase difference is formed between two of the 24 voltage vectors produced by the transformer, which makes the four rectifier bridge groups produce a 24-pulse DC voltage without interphase reactors. Meanwhile, by adding extended winding to each phase of the transformer, wide-range regulation of the ATRU output voltage can be realized, and the reasonable voltage regulation range is between 0.2 and 1.6. The superposition of the voltage vectors and the principle of the voltage regulation are analyzed in detail. Furthermore, the turns ratio of the windings, winding current, output voltage, and kilovolt-ampere rating are all derived. Finally, the simulations and experiments are carried out, and the correctness of the principle and theoretical analysis of the new 24-pulse ATRU are verified.

#24-pulse #Autotransformer rectifier #Kilovolt-ampere rating #Voltage regulation

참고문헌 (16)

참고문헌 신청

X. W. Xie, M. Wang, and F. H. Zhang, “12-pulse autotransformer rectifier unit with current harmonic injection,” Power Electron, Vol. 45, No. 11, pp. 9-11, Nov. 2011. F. Jiang, H. J. Ge, X. X. Dong, and L. Zhang, “Research on a new 12-pulse step-up and step-down aviation autotransformer rectifier,” J. Power Electron., Vol. 18, No. 1, pp. 266-276, Jan. 2018. Z. X. Reng, “Research on multi-pulse auto-transformer rectifier units (ATRU),” M.S. Thesis, Nanjing University of Aeronautics & Astronautics, China, 2008. L. Niu, H. J. Ge, G. Yang, and F. Jiang. “Optimal design of a new step-down 18-pulse autotransformer,” Chinese J. Eng., Vol. 39, No. 3, pp.456-461, 2017. N. Wang, X. Wei, “Line side harmonic current analysis in 24-pulse traction rectifier substation of city track,” Transformer, 2003.

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