Research on Proportional-Resonant Controller and Harmonic Compensation for Grid-Connected Inverter

Zhang Miao; Su Xie-fei

doi:10.3969/j.issn.1007-7162.2016.05.011

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Research on Proportional-Resonant Controller and Harmonic Compensation for Grid-Connected Inverter

更新时间：2026-05-27

- Research on Proportional-Resonant Controller and Harmonic Compensation for Grid-Connected Inverter
- Vol. 33, Issue 5, Pages: 59-64(2016)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1007-7162.2016.05.011
  CLC：
- Online First：10 September 2016，
  
  Published：2016
- 稿件说明：
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张淼, 苏协飞. 基于比例谐振和谐波补偿控制技术的单相逆变并网研究[J]. 广东工业大学学报, 2016, 33(5): 59-64.

Zhang Miao, Su Xie-fei. Research on Proportional-Resonant Controller and Harmonic Compensation for Grid-Connected Inverter[J]. 2016, 33(5): 59-64.
张淼, 苏协飞. 基于比例谐振和谐波补偿控制技术的单相逆变并网研究[J]. 广东工业大学学报, 2016, 33(5): 59-64. DOI： 10.3969/j.issn.1007-7162.2016.05.011.

Zhang Miao, Su Xie-fei. Research on Proportional-Resonant Controller and Harmonic Compensation for Grid-Connected Inverter[J]. 2016, 33(5): 59-64. DOI： 10.3969/j.issn.1007-7162.2016.05.011.

摘要

电网电压背景谐波的干扰在并网系统中是不可避免的，这会给并网电流带来大量的低阶谐波.提高开关频率能够抑制低阶谐波，却带来大量的高阶谐波.针对基于比例谐振控制(PR)和谐波补偿(HC)控制器的LCL型单相并网逆变器，详细分析了电流控制器参数对系统性能的影响，通过对并网电流的稳态误差、相位裕度和幅值裕度的分析得出满足要求的控制器各参数选择范围，结合系统的稳定性分析来选择控制器参数.仿真结果证明所给出的控制策略和参数设计方法是可行的.

Abstract

The distortion of background harmonic voltage is inevitable in grid-connected system

which would result in serious low-order harmonics in the injected grid current. The low-order harmonics can be suppressed by increasing the switching frequency

while it also brings many high-order harmonics. Based on PR+HC-based current controller

the effects of the current controller parameters on steady-state error

phase margin and gain margin in LCL-type grid-connected inverter are investigated. A method is given to obtain the controller parameters’ region that meets the requirements

and the optimal parameters could be obtained on the basis of analysis in system stability. Simulation results verify the proposed control scheme and parameters design method.

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Related Institution

School of Automation, Guangdong University of Technology

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