孤岛微电网变换器多目标调制预测控制  

Multi-objective modulation predictive control for islanded microgrid converters

作　　者：高皋 王思睿 范燕波 陈兰兰 GAO Gao;WANG Sirui;FAN Yanbo;CHEN Lanlan(Zhenjiang Electric Power Design Institute Co.,Ltd.,Zhenjiang 212009,China)

机构地区：[1]镇江电力设计院有限公司,江苏镇江212009

出　　处：《电气应用》2025年第3期8-14,共7页Electrotechnical Application

基　　金：国网江苏省电力有限公司省管产业科技项目(JC2024044)。

摘　　要：为了改进孤岛微电网变换器传统预测控制输出电压纹波和谐波大的问题,提出了一种多目标调制预测控制策略。首先,设计了一种电压电流跟踪双目标价值函数,相比于传统单目标控制,提升了解耦能力和动态响应;其次,提出了一种低复杂度三矢量调制预测控制策略,计算了逆变器最优参考电压矢量的解析解,并基于其位置设计了一种最优三矢量快速选择策略;最后,利用与价值函数的反比关系,计算了三矢量的最优占空比,并以七段对称式调制输出。仿真与实验结果验证了所提控制策略在提升动态、稳态性能和降低计算量方面的优越性。To improve the problem of large output-voltage ripples and harmonics in traditional predictive control of islanded microgrid converters,a multi-objective modulation predictive control strategy is proposed.Firstly,a voltage and current tracking-based dual-objective cost function is designed.Compared with traditional single objective control,the decoupling ability and dynamic response are enhanced.Secondly,a low-complexity threevector modulation predictive control strategy is introduced.The optimal reference voltage-vector analytic solution is calculated and an optimal three-vector fast selection strategy is designed based on its position.Finally,the optimal duty cycles of the three vectors are derived using the inverse relations with the cost function,which are outputted in a seven-stage symmetric modulation pattern.The superiority in dynamic performance,steady-state performance and computation amount reduction are verified by simulation and experimental results.

关 键 词：孤岛 微电网变换器 预测控制 电压电流控制 低复杂度 

分 类 号：TM4[电气工程—电器]