H桥逆变器的复合控制策略  

Compound control strategy of H-bridge inverter

作　　者：于永进 宋久义 YU Yongjin;SONG Jiuyi(College of Electronic Engineering and Automation,Shandong University of Science and Technology,Qingdao 266590,China)

机构地区：[1]山东科技大学电气与自动化工程学院,山东青岛266590

出　　处：《安徽大学学报（自然科学版）》2023年第1期47-53,共7页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61803233)。

摘　　要：针对比例积分(proportional integral,简称PI)控制H桥逆变器时出现的问题,将PI控制与幂次趋近律滑模控制相结合,提出复合控制策略.仿真实验结果表明:PI控制下逆变器为倍周期分岔状态,而复合控制下逆变器为稳定状态;相对于PI控制,复合控制能将电压、电感及开关频率稳定域拓展得更广,复合控制对扰动具有更强的鲁棒性,复合控制输出电流的畸变率更小、幅值更接近参考电流的幅值.因此,复合控制比PI控制更具优越性.Aiming at the problem of proportional integral(PI)controlling H-bridge inverter,a compound control strategy was proposed by combining PI control with idempotent approach law sliding mode control.Simulation results showed that under PI control the inverter was in period-doubling bifurcation state,while under the compound control the inverter was in stable state;compared with PI control,the compound control could expand the voltage,inductance and switching frequency stability domain more widely,the compound control had stronger robustness to disturbance,the distortion rate of the output current of the compound control was smaller and the amplitude was closer to that of the reference current.Therefore,the compound control was more advantageous than PI control.

关 键 词：H桥逆变器 PI控制 滑模控制 稳定分界点 抗干扰 

分 类 号：TM71[电气工程—电力系统及自动化]