基于LADRC和准PR的三相LCL型光伏并网逆变器谐波谐振抑制策略

周雪松; 郭帅朝; 马幼婕; 李月超; 马闯

doi:10.19912/j.0254-0096.tynxb.2021-1319

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太阳能学报 ›› 2023, Vol. 44 ›› Issue (3) : 465-474. DOI: 10.19912/j.0254-0096.tynxb.2021-1319

基于LADRC和准PR的三相LCL型光伏并网逆变器谐波谐振抑制策略

周雪松, 郭帅朝, 马幼婕, 李月超, 马闯

作者信息 +

HARMONIC RESONANCE SUPPRESSION STRATEGY OF THREE-PHASE LCL PHOTOVOLTAIC GRID-CONNECTED INVERTER BASED ON LADRC AND QUASI PR

Zhou Xuesong, Guo Shuaichao, Ma Youjie, Li Yuechao, Ma Chuang

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文章历史 +

摘要

针对三相LCL型光伏并网逆变器由自身高频段谐振尖峰引起的谐波谐振现象,设计一种基于三阶线性状态观测器的二阶线性自抗扰控制（LADRC）和准PR控制相结合的电流双闭环控制策略,较好地削弱了高频段的谐振尖峰,抑制了光伏系统的谐波谐振现象。通过设计李雅普诺夫函数证明了闭环系统最终会稳定收敛;利用仿真对不同工况下的控制策略深入对比分析,结果表明此双环控制策略具有优越的鲁棒性和实际应用价值。

Abstract

Aiming at the harmonic resonance phenomenon of three-phase LCL photovoltaic grid connected inverter from its high frequency resonant peak, a current double closed loop control strategy based on third-order LESO combined with second-order LADRC and quasi PR control is designed. It can better weaken the high frequency resonant peak and suppress the harmonic resonance phenomenon of photovoltaic system. By designing Lyapunov function, it is proved that the closed-loop system will eventually converge stably. The simulation results show that the double loop control strategy has superior robustness and practical application value.

导出引用

周雪松, 郭帅朝, 马幼婕, 李月超, 马闯. 基于LADRC和准PR的三相LCL型光伏并网逆变器谐波谐振抑制策略[J]. 太阳能学报. 2023, 44(3): 465-474 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1319

Zhou Xuesong, Guo Shuaichao, Ma Youjie, Li Yuechao, Ma Chuang. HARMONIC RESONANCE SUPPRESSION STRATEGY OF THREE-PHASE LCL PHOTOVOLTAIC GRID-CONNECTED INVERTER BASED ON LADRC AND QUASI PR[J]. Acta Energiae Solaris Sinica. 2023, 44(3): 465-474 https://doi.org/10.19912/j.0254-0096.tynxb.2021-1319

中图分类号： TM464

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