一种改进电能质量的新型36脉冲星形整流器

2019 5th International Conference on Advances in Electrical Engineering (ICAEE) Pub Date : 2019-09-01 DOI:10.1109/ICAEE48663.2019.8975670

Md. Abdul Malek, Muhammad Abdul Goffar Khan

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引用次数: 3

摘要

本文提出了一种基于36脉冲无控星型整流器的电流注入技术，用于大电流额定值应用。该整流器由一种新型三角/叉型变压器、带直流无源注入电路的18脉冲星形整流器和特殊抽头间相变压器组成。Delta/叉形变压器为18脉冲星形整流器创建两个9相电源。无源注入电路由stt和单相全波整流器(SPFWR)组成，所提出的无源注入电路的导通损耗比传统纹波再注入电路小得多。SPFWR从STIT中提取谐波电流反馈给负载，该谐波电流改变了18脉冲星型整流器的输出电压波形。当STIT匝数比优化设计时，该整流器工作为36脉冲星型整流器，在此条件下，输入电流总谐波(THD)约为4.68%。在MATLAB软件环境下对所提出的整流器进行了分析、设计和仿真，仿真结果符合IEEE -519标准的要求。

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A New 36-Pulse Star Rectifier for Power Quality Improvement

In this paper, current injection technique based 36-pulse uncontrolled star rectifier is proposed for large current rating application. The proposed rectifier consists of a new delta/fork conFigure transformer, 18-pulse star rectifier with passive injection circuit at dc link and specially tapped inter phase transformer (STIT). Delta/fork transformer creates two 9-phase supplies for 18-pulse star rectifier. STIT and single phase full-wave rectifier (SPFWR) constitutes the passive injection circuit and conduction loss of proposed passive injection circuit is much smaller than the conventional ripple re-injection circuit. SPFWR extract harmonics current from STIT which feed back to the load and this harmonic current modify the output voltage wave shape of 18-pulse star rectifier. Proposed rectifier operate as 36-pulse star rectifier when turns ratio of STIT is designed optimally and under this condition total harmonic (THD) of the input line current is about 4.68%. Proposed rectifier is analyzed, designed and simulated in MATLAB software environment and simulation results confirm the IEEE -519 standard requirement.

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来源期刊

2019 5th International Conference on Advances in Electrical Engineering (ICAEE)

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