三相电压型PWM变流器交流侧LCL滤波器的有源阻尼策略研究

郭利辉; 张元敏; 李永辉; 张巧展

引用本文:	郭利辉,张元敏,李永辉,等.三相电压型PWM变流器交流侧LCL滤波器的有源阻尼策略研究[J].电力系统保护与控制,2017,45(4):132-138.
	GUO Lihui,ZHANG Yuanmin,LI Yonghui,et al.Research on active damping strategy of LCL filter in three-phase voltage source PWM rectifier[J].Power System Protection and Control,2017,45(4):132-138

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三相电压型PWM变流器交流侧LCL滤波器的有源阻尼策略研究
郭利辉¹,张元敏¹,李永辉²,张巧展³
(1.许昌学院电气(机电)工程学院, 河南许昌 461000;2.洛阳铁路信息工程学校, 河南洛阳 471000; 3.中国石油天然气第一建设公司技工学校, 河南洛阳 471000)

摘要:

三相电压型PWM变流器是分布式可再生能源发电单元接入传统配电网的主要接口设备。在PWM变流器主电路设计中，采用LCL滤波器替代传统的L型滤波器已经被广泛地接受。针对含LCL滤波器的三相电压型PWM变流器，在系统输入输出模型与传递函数的基础上，提出了一种新型LCL滤波器优化设计方法。与传统L型滤波器相比，该方法具有电感总量小、动态性能好、系统成本低的优点。为了抑制LCL滤波器的固有谐振，在基于同步旋转坐标系的三相电压型PWM变流器控制中，通过在电流环中增加陷波滤波器的方法实现了LCL滤波器的有源阻尼。最后通过仿真和实验对所提出方法的正确性和有效性进行了证明。

关键词: PWM变流器 LCL滤波器优化设计陷波滤波器有源阻尼

DOI：10.7667/PSPC160351

分类号:

基金项目:2016年河南省科技攻关项目(162102210298);2015年河南省科技攻关项目(152102210342);2016年河南省高等学校重点科研项目(16A470024);2015年河南省高等学校重点科研项目(15A470022);2016年许昌市科技发展计划项目

Research on active damping strategy of LCL filter in three-phase voltage source PWM rectifier

GUO Lihui¹,ZHANG Yuanmin¹,LI Yonghui²,ZHANG Qiaozhan³

(1. School of Electrical (Electromechanical) Engineering, Xuchang University, Xuchang 461000, China;2. Luoyang Railway Information Engineering School, Luoyang 471000, China;3. Technician Training School of China Petroleum First Construction Corporation, Luoyang 471000, China)

Abstract:

Three-phase voltage-mode PWM converter is the main interface device between distributed renewable energy generation unit and traditional distribution network. In the main circuit design of PWM converter, using LCL filter to replace the traditional L filter has been widely accepted. In view of three-phase voltage-mode PWM converter with LCL filter, on the basis of input and output model and system transfer function, a novel LCL filter optimal design method is proposed. Comparing with the traditional L filter, the novel method has advantages on smaller total inductance, better dynamic performance and lower system cost. In order to prevent the inherent resonance of LCL filter, it increases a notch filter in current loop to achieve active damping of LCL filter in synchronous rotating coordinate system. The experimental results verify the correctness and effectiveness of the proposed method. This work is supported by 2016 Science and Technology Key Research Project of Henan Science and Technology Agency (No. 162102210298), 2015 Science and Technology Key Research Project of Henan Science and Technology Agency (No. 152102210342), 2016 Key Science and Technology Research Project of Henan Higher Institution (No. 16A470024), 2015 Key Science and Technology Research Project of Henan Higher Institution (No. 15A470022), and 2016 Science and Technology Development Planning Project of Xuchang City.

Key words: PWM converter LCL filter optimal design notch filter active damping

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