直流侧带PWM整流器的12脉波整流系统及其负载适应性

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摘要提出一种直流侧带小容量单相PWM整流器的12脉波整流系统, 通过环流抑制谐波机理, 分析得出控制辅助PWM整流器工作在单位功率因数状态, 使系统直流侧产生合适的三角波环流, 能够显著抑制输入电流谐波。对于大功率整流系统常用的LR和LCR型负载, 分析了输入电流THD值与负载参数的关系, 系统均能达到较好的谐波抑制效果。研制了一台额定功率为6.4kW的系统, 额定负载下输入电流THD值约为1%, 实验结果验证了系统负载适应性及其在大功率场合的应用价值。

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	朱屹
	杨世彦
	孟凡刚

关键词 ：多脉波整流, 谐波, 有源平衡电抗器, PWM整流器

Abstract：Multi-pulse rectifier technique is the main method to solve the harmonic pollution of the high power rectifier system. Multi-pulse rectifier based on harmonic suppression technique at DC side can eliminate input current harmonic more effectively. In the paper, a 12-pulse rectifier system is proposed with a single-phase PWM rectifier at DC side. The analysis results showed that input current harmonic can be suppressed effectively when the PWM rectifier operated under unity power factor condition. The relationship is also analyzed between THD of input current and load parameters for the LR type and LRC type loads which were commonly used in high power system. The results indicate the system has good harmonic suppression for both types of load. A 6.4kW experimental system has been designed. Experimental results show the THD is closed to 1% and verify the system has good load adaptability and application prospect in high power rectifiers.

Key words： Multi-pulse rectifiers harmonic active inter-phase reactor PWM rectifier

收稿日期: 2011-10-08 出版日期: 2014-03-20

PACS:

TM461

基金资助:国家自然科学基金(51107019)和中央高校基本科研业务费专项资金(HT. NSRIF. 2010101)资助项目。

作者简介: 朱屹男, 1988年生, 硕士研究生, 研究方向为电能质量控制技术。杨世彦男, 1962年生, 教授, 博士生导师, 主要研究方向为特种开关电源应用技术、电动汽车电驱系统。

引用本文:

朱屹, 杨世彦, 孟凡刚. 直流侧带PWM整流器的12脉波整流系统及其负载适应性[J]. 电工技术学报, 2012, 27(8): 85-92. Zhu Yi, Yang Shiyan, Meng Fangang. 12-Pulse Rectifier System With a PWM Rectifier at DC Side and Its Load Adaptability. Transactions of China Electrotechnical Society, 2012, 27(8): 85-92.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I8/85

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