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首页> 外文期刊>Industry Applications, IEEE Transactions on >Improvement in Harmonic Reduction of a Zigzag Autoconnected Transformer Based 12-Pulse Diode Bridge Rectifier by Current Injection at DC Side
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Improvement in Harmonic Reduction of a Zigzag Autoconnected Transformer Based 12-Pulse Diode Bridge Rectifier by Current Injection at DC Side

机译：通过在直流侧注入电流来改善基于之字形自动连接变压器的12脉冲二极管桥式整流器的谐波降低

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摘要

In this paper, to improve the harmonic reduction ability in the input line current of a 12-pulse diode bridge rectifier using zigzag autoconnected transformer with a dc side current injection technique is presented. Conventional 12-pulse rectifier does not meet the IEEE-519 standard and therefore current injection technique at dc side is used to shape the converter current to minimize the harmonic distortion in the input line current. The proposed converter configuration uses a zigzag autoconnected transformer with inherent ability to block zero-sequence components, which eliminates the requirement of a zero-sequence blocking transformer, and thereby reduces the overall rating of the converter. The current injection technique at dc side enables to alter the dc side currents, which further shapes the input line currents to near sinewave with total harmonic distortion of less than 1% and power factor close to unity. The proposed converter configuration is simulated and analyzed in MATLAB/Simulink. The effects of variation in the magnitude of injected current on the input line current harmonics in terms of power quality indices are analyzed. A prototype of the proposed converter configuration is developed, and experimental results are presented to validate the theoretical design, analysis, and simulation results.
机译：本文提出了一种使用之字形自动连接变压器和直流侧电流注入技术来提高12脉冲二极管桥式整流器的输入线电流谐波抑制能力。常规的12脉冲整流器不符合IEEE-519标准，因此使用直流侧的电流注入技术来对转换器电流进行整形，以最大程度地减少输入线电流中的谐波失真。提出的转换器配置使用之字形自动连接的变压器具有阻断零序分量的固有能力，从而消除了对零序阻断变压器的需求，从而降低了转换器的整体额定值。直流侧的电流注入技术能够改变直流侧的电流，从而进一步将输入线电流整形为接近正弦波，总谐波失真小于1％，功率因数接近于1。拟议的转换器配置在MATLAB / Simulink中进行了仿真和分析。分析了电能质量指标方面注入电流幅度变化对输入线路电流谐波的影响。开发了所提出的转换器配置的原型，并提供了实验结果以验证理论设计，分析和仿真结果。

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