级联H桥并网逆变器能量成型控制策略及控制参数整定  

Energy-shaping Control Strategy and Control Parameter Tuning of Cascaded H-bridge Grid-connected Inverter

作　　者：李朝东 叶满园 冉岩 宋蕙慧 LI Chaodong;YE Manyuan;RAN Yan;SONG Huihui(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,Jiangxi Province,China;School of Electrical and Electronic Engineering,Shandong University of Technology,Zibo 255049,Shandong Province,China;School of New Energy,Harbin Institute of Technology(Weihai),Weihai 264200,Shandong Province,China)

机构地区：[1]华东交通大学电气与自动化工程学院,江西省南昌市330013 [2]山东理工大学电气与电子工程学院,山东省淄博市255049 [3]哈尔滨工业大学(威海)新能源学院,山东省威海市264200

出　　处：《中国电机工程学报》2025年第4期1587-1598,I0030,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金项目(52267014,51767007);江西省研究生创新专项项目(YC2023-B206)。

摘　　要：级联H桥多电平逆变器因具有模块化特性,在并网系统中被广泛运用。但因其具有强耦合的非线性特性,在应用PI闭环控制等线性控制策略时,系统的快速性较差、控制参数多且难以整定。针对此问题,提出一种能量成型控制策略。首先,通过瞬时功率观测,建立系统同步旋转坐标系下的端口受控哈密顿模型,设计系统的能量成型控制器。其次,分析控制参数对系统控制性能的影响,并给出控制参数整定的一般性方法。最后,通过仿真和实验验证所提控制参数整定方法的合理性,也验证了所提控制策略较PI闭环控制的控制参数更少、动态性能更优。The cascaded H-bridge(CHB)multilevel inverter is widely used in grid-connected systems for its modular characteristics.However,due to the strongly coupled nonlinear characteristics,the CHB grid-connected inverter system with linear control strategies such as PI closed-loop control strategy has poor rapidity and multiple control parameters that are difficult to tune.To solve this problem,an energy-shaping control strategy is proposed.Firstly,the port-controlled Hamiltonian(PCH)model in the synchronous rotating coordinate system is established by instantaneous power observation,and the energy-shaping controller of the system is designed.Secondly,the influence of the control parameters on the control performance is analyzed,and a general tuning method of the control parameters is given.Finally,simulation and experimental results verify the rationality of the proposed control parameter tuning method,and it is also verified that the designed control strategy has fewer control parameters and better rapidity than the PI closed-loop control strategy.

关 键 词：级联H桥 并网逆变器 能量成型控制 控制参数整定 端口受控哈密顿模型 

分 类 号：TM46[电气工程—电器]