Analysis of Harmonic Cancellation Performance of a Shunt Phase-Shift Transformer Rectifier

Jongwan Kim, J. Lai, Xiong Liu
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引用次数: 5

Abstract

A 12-pulse rectifier has been widely used for harmonic mitigation in a large-scale power system. Recently, a shunt phase-shift transformer rectifier was proposed and already has been utilized in a marine transportation. For a power system equipped with multiple generators, the shunt phase-shift transformer front-end selectively eliminates 5th and 7th harmonic component with more than 75% size reduction over the conventional 12-pulse rectifier. However, a shunt phase-shift transformer rectifier requires additional source inductors to eliminate the undesired harmonics and the relationship between the source impedance and harmonic elimination has not been verified. This paper evaluates the effect of the line inductor on a harmonic cancellation performance of the shunt phase-shift transformer. An equivalent circuit analysis and a mathematical derivation of the shunt phase-shift transformer rectifier are provided and the relationship between the source impedance and harmonic cancellation is mathematically derived. The computer simulation and experimental test results from proto type hardware verify the equivalent model and the mathematical analysis.
并联移相变压器整流器谐波消除性能分析
12脉冲整流器已广泛应用于大型电力系统的谐波抑制。近年来,提出了一种并联移相变压器整流器,并已在海上运输中得到应用。对于配备多台发电机的电力系统,并联移相变压器前端选择性地消除了5次和7次谐波分量,比传统的12脉冲整流器减小了75%以上的尺寸。然而,并联移相变压器整流器需要额外的源电感来消除不希望的谐波,并且源阻抗和谐波消除之间的关系尚未得到验证。本文评价了线路电感对并联移相变压器谐波消除性能的影响。给出了并联移相变压器整流器的等效电路分析和数学推导,并推导了源阻抗与谐波抵消的关系。计算机仿真和样机硬件试验结果验证了等效模型和数学分析的正确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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