电器与能效管理技术Issue(5)：8-16,9.DOI:10.16628/j.cnki.2095-8188.2026.05.002
面向单相并网逆变器的改进型二阶广义积分器锁相环控制方法研究
Research on Improved SOGI-PLL Control Method for Single-Phase Grid-Connected Inverters
摘要
Abstract
With the increasing demand for renewable energy integration,the synchronization accuracy and power quality of grid-connected inverters have a significant impact on grid stability.To improve the comprehensive performance of single-phase grid-connected inverters,the control scheme of the second-order generalized integrator phase-locked loop(SOGI-PLL)is studied.An APF-SOGI-PLL structure combined with an all-pass filter(APF)and a frequency-locked loop(FLL)is proposed to improve anti-interference ability and frequency tracking performance.Proportional odd-harmonic repetitive control is adopted to enhance harmonic suppression capability.A passive damping method is used to suppress resonant peaks and improve system stability.A simulation model of a 1 kW grid-connected inverter is built in Simulink.Simulation results show that the proposed APF-SOGI-PLL can effectively suppress DC offset and achieve fast frequency synchronization under grid frequency fluctuations.The total harmonic distortion(THD)of the grid-connected current is lower than 0.70％,and the comprehensive performance is superior to that of the comparison methods.关键词
并网逆变器/直流分量抑制/频率自适应/谐波抑制Key words
grid-connected inverter/DC component suppression/frequency adaptation/harmonic suppression分类
信息技术与安全科学引用本文复制引用
叶灵,陈仕荣,叶鹏,吴自然,梁步猛,陈冲..面向单相并网逆变器的改进型二阶广义积分器锁相环控制方法研究[J].电器与能效管理技术,2026,(5):8-16,9.基金项目
国家自然科学基金项目(U24A20152) （U24A20152）
浙江省科技计划(2025C02243) （2025C02243）
温州市重大科技创新攻关项目(ZS2023001) （ZS2023001）
