CHEN Xiao-qiang1,2, ZHAO Shou-wang1, WANG Ying1
（1. School of Automation & Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2. Key Laboratory of Opto-Electronic Technology and Intelligent Control, Ministry of Education, Lanzhou Jiaotong University, Lanzhou 730070, China）
Abstract： To solve the input current harmonic pollution of the high power rectifier system, 18-pulse rectifier based on a kind of active harmonic suppression technique at dc side is proposed in this paper. The pulse rectifier employs three-phase diode bridges, each of them followed by a boost converter. Unlike the conventional three-phase unity-power-factor diode rectifier, the ideal sinusoidal main currents of circuit topology are obtained by control its output current or input currents of three boost converters for approximately triangular modulation. The theoretical of modulation strategy and characteristics of input and output currents about the proposed rectifier are analyzed in detail. Simulation results by Matlab/Simulink demonstrate that the proposed rectifier draws nearly sinusoidal current and power quality index is improved. The correctness of the theoretical analysis is validated.
Key words： 18-pulse rectifier; active harmonic suppression; three-phase unity-power-factor; sinusoidal current; topology
CLD number： TM461 Document code： A
Article ID： 1674-8042（2018）02-0160-09 doi： 10.3969/j.issn.1674-8042.2018.02.010
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一种有源谐波抑制的18脉波整流器仿真
陈小强1,2, 赵寿旺1, 王英1
(1. 兰州交通大学 自动化与电气工程学院， 甘肃 兰州 730070；2. 兰州交通大学 光电技术与智能控制教育部重点实验室， 甘肃 兰州 730070)
摘要：为消除大功率整流系统的谐波污染， 提出了一种有源谐波抑制的18脉波整流器。 整流器的3个二极管整流桥的输出分别与3个boost变流器级联。 与传统的三相有源功率因数校正技术不同的是， 18脉波整流桥通过控制其输出电流（即boost变流器输入电流）近似三角波来使交流侧的输入电流近似正弦波。 分析了整流器的输入输出电流特性， 并对有源谐波抑制的电流调制策略进行了详细的研究。 利用Matlab/Simulink 进行了仿真验证， 结果表明， 所提出的电路拓扑能够获得正弦输入电流， 电能质量明显改善， 证明了理论分析的正确性。
关键词：18脉波整流器; 有源谐波抑制; 三相有源功率因数； 正弦电流； 拓扑
引用格式：CHEN Xiao-qiang, ZHAO Shou-wang, WANG Ying. Simulation of a kind of active harmonic reduction 18-pulse rectifier. Journal of Measurement Science and Instrumentation, 2018, 9(2)： 160-168. ［doi： 10.3969／j.issn.1674-8042.2018.02.010］
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