新型电流单环PIR控制器在中频逆变器中的应用  

Application of Novel Current Single-loop PIR Controller in Medium-frequency Inverter

作　　者：胡文华 谭光辉 HU Wenhua;TAN Guanghui(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学电气与自动化工程学院,南昌330013

出　　处：《电力系统及其自动化学报》2020年第11期7-12,共6页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金资助项目(51567009);江西省应用研究培育计划(20181BBE58008)。

摘　　要：为提高中频逆变器输出电压质量和稳定性,基于单相H桥逆变器的拓扑结构,提出一种采用电容电流单环的比例积分谐振控制策略PIR(proportional integral resonance)。新策略以电容电流为被控量,将负载电流作为一种扰动,引入电流给定前馈补偿控制,通过设置合适的补偿控制器,补偿加入带来的谐振频率处增益减小的问题。新策略只需单环控制,成本降低,可实现无静差控制。最后利用Matlab/Simulink建立了单相H桥逆变器的仿真模型,通过仿真实验验证了所提策略对中频400 Hz逆变器输出电压控制的有效性。To improve the quality and stability of output voltage from a medium-frequency inverter,a proportional inte⁃gral resonance(PIR)control strategy which adopts capacitor current single-loop is proposed based on the topology of a single-phase H-bridge inverter.In the novel strategy,capacitor current is selected as the controlled quantity,load cur⁃rent is regarded as a disturbance,and the current given feedforward compensation control is introduced.By setting a suitable compensation controller,the gain reduction at the resonant frequency brought by the addition is compensated.Under the novel strategy,only single-loop control is required and the corresponding cost is lower,thus achieving a con⁃trol with no static difference.Finally,the simulation model of a single-phase H-bridge inverter is established by using Matlab/Simulink,and simulation results verify the effectiveness of the proposed strategy for the output voltage control of a medium-frequency 400 Hz inverter.

关 键 词：比例积分谐振 无静差 中频逆变器 控制器 电流单环 

分 类 号：TM464[电气工程—电器]