基于残差生成器的并联逆变器暂稳态补偿策略

胡长斌; 王高伟; 罗珊娜; 陆珩; 李学成

doi:10.19912/j.0254-0096.tynxb.2023-0456

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太阳能学报 ›› 2024, Vol. 45 ›› Issue (7) : 286-293. DOI: 10.19912/j.0254-0096.tynxb.2023-0456

基于残差生成器的并联逆变器暂稳态补偿策略

胡长斌, 王高伟, 罗珊娜, 陆珩, 李学成

作者信息 +

TRANSIENT STEADY STATE COMPENSATION STRATEGY FOR PARALLEL INVERTERS BASED ON RESIDUAL GENERATOR

Hu Changbin, Wang Gaowei, Luo Shanna, Lu Heng, Li Xuecheng

Author information +

文章历史 +

摘要

针对孤岛微电网中所存在的因负载投切、不平衡负载等扰动造成的电能质量问题以及因线路阻抗不匹配造成的无功不均分问题,提出一种基于残差生成器的暂稳态性能补偿控制策略。基于逆变器并联系统中各逆变器的状态空间模型设计残差生成器,产生残差r(s),并通过低通和高通滤波器生成基波残差和非基波残差;然后,从扰动和线路压降对消的角度设计暂态补偿控制器Q1(s)和稳态补偿控制器Q2(s),并根据本地信息推导两个控制器的具体表达式,实现扰动抑制和逆变器并联系统的无功均分,抑制环流,并补偿线路压降;最后实验验证所提策略的有效性。

Abstract

A transient steady-state performance compensation control strategy based on residual generator is proposed to address the power quality issues caused by disturbances such as load switching and unbalanced loads in island microgrids, as well as the reactive power imbalance caused by line impedance mismatch. Design of residual generator based on the state space model of each inverter in the inverter parallel system, generate residual r（s）, and generate fundamental and non fundamental residuals through low-pass and high-pass filters. Then, from the perspective of disturbance and line voltage drop cancellation, transient compensation controller Q₁（s） and steady-state compensation controller Q₂（s） are designed, and the specific expressions of the two controllers are derived based on local information to achieve disturbance suppression and reactive power sharing of the inverter parallel system, suppress circulating currents, and compensate for line voltage drop. Finally, the experiments verify the effectiveness of the proposed strategy.

导出引用

胡长斌, 王高伟, 罗珊娜, 陆珩, 李学成. 基于残差生成器的并联逆变器暂稳态补偿策略[J]. 太阳能学报. 2024, 45(7): 286-293 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0456

Hu Changbin, Wang Gaowei, Luo Shanna, Lu Heng, Li Xuecheng. TRANSIENT STEADY STATE COMPENSATION STRATEGY FOR PARALLEL INVERTERS BASED ON RESIDUAL GENERATOR[J]. Acta Energiae Solaris Sinica. 2024, 45(7): 286-293 https://doi.org/10.19912/j.0254-0096.tynxb.2023-0456

中图分类号： TM71

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