|本期目录/Table of Contents|

[1]谢文浩,王建赜,纪延超,等. 一种LCL 型并网逆变器的复合阻抗重塑方法[J].电机与控制学报,2018,22(10):35-42.[doi:10.15938/j.emc.2018.10.005]
 XIE Wen-hao,WANG Jian-ze,JI Yan-chao,et al. Composite impedance reshaping method for LCL-type grid-tied inverter[J].,2018,22(10):35-42.[doi:10.15938/j.emc.2018.10.005]
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 一种LCL 型并网逆变器的复合阻抗重塑方法
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
22
期数:
2018年10
页码:
35-42
栏目:
出版日期:
2018-10-15

文章信息/Info

Title:
 Composite impedance reshaping method for LCL-type grid-tied inverter
作者:
 谢文浩1 王建赜1 纪延超1 于继来1 谢光仁2
 ( 1. 哈尔滨工业大学电气工程及自动化学院,哈尔滨150001; 2. 浙江浙能温州发电有限公司,浙江温州325602)
Author(s):
 XIE Wen-hao1 WANG Jian-ze1 JI Yan-chao1 YU Ji-lai1 XIE Guang-ren2
 ( 1. School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China;2. Zhejiang Zheneng Wenzhou Electric Power Plant Co. ,Ltd,Wenzhou 325602,China)
关键词:
并网逆变器 有源阻尼 谐波补偿 Butterworth 滤波器 阻抗重塑
Keywords:
grid-tied inverter active damping harmonic compensation Butterworth filter impedance reshaping
分类号:
TM 46
DOI:
10.15938/j.emc.2018.10.005
文献标志码:
A
摘要:
LCL 型并网逆变器高频谐波衰减能力强,但存在谐振问题,并且并网电流在电网低频谐波电压的扰动下发生严重畸变。建立LCL 型并网逆变器的状态空间模型,通过状态反馈有源阻尼控制配置主导极点,对并网逆变器谐振频率的输出阻抗进行校正,引入阻尼比以抑制谐振峰。进一步地,为了抑制电网背景谐波电压对并网电流的扰动,提出一种谐波补偿方法,通过电压前馈函数与二阶Butterworth 滤波器串联,重塑逆变器的中低频输出阻抗,同时提高了电压前馈控制对阻抗参数的鲁棒性。采用这种复合阻抗重塑方法时,逆变器的中低频输出阻抗可以增大10 倍以上,仿真实验验证了所述方法的正确性和有效性。
Abstract:
Inverters with LCL filters have excellent abilities of attenuating high frequency current harmonics.However, the resonance and distortion of injected currents by the background harmonic voltage ( BHV) are two common challenges faced by LCL-type grid-tide inverter. State-feedback control reshaped the output impedance of inverter at resonant frequency by replacing poles. The resonance peak was suppressed with damping ratio being increased. Moreover, in order to resist the effects of the BHV,a harmonic
compensating method with a feed-forward voltage compensator and a second order Butterworth filter was proposed. Thus, the output impedance of inverter was reshaped within the low and medium frequency region,as well as improvement in the robustness of feed-forward compensator. Based on the composite impedance reshaping method, the output impedance of inverter was increased to 10 times within the low and medium frequency region. Simulation experiments for a three-phase LCL-type grid-tied inverter verify the effectiveness of the proposed method.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2016 - 05 - 11
基金项目: 科技部国际科技合作计划资助项目( 2010DFR70600)
作者简介: 谢文浩( 1993—) ,男,博士研究生,研究方向为新能源并网技术;
王建赜( 1972—) ,男,研究员,研究方向为无功功率补偿,清洁能源控制;
纪延超( 1962—) ,男,教授,博士生导师,研究方向为灵活交流输电系统、静态无功补偿器以及有源滤波器等;
于继来( 1965—) ,男,教授,博士生导师,研究方向为电力系统分析与控制;
谢光仁( 1968—) ,男,工程师,目前主要从事电力技术管理工作。
通信作者: 王建赜
更新日期/Last Update: 2018-11-04