混合H桥级联多电平逆变器功率均衡控制方法  

Power balance control scheme of cascaded multilevel inverters with hybrid H-bridge units

作　　者：叶满园 肖云煌 康翔 宋平岗 YE Man-yuan;XIAO Yun-huang;KANG Xiang;SONG Ping-gang(School of Electrical and Automation Engineering,East China Jiaotong University,Nanchang 330013,China;Guangzhou Metro,Guangzhou 510310,China;State Grid Ji’an Electric Power Supply Company,Ji’an 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 [2]广州地铁集团有限公司,广州510310 [3]国网江西省电力公司吉安供电分公司,江西吉安330013

出　　处：《电机与控制学报》2018年第12期54-61,共8页Electric Machines and Control

基　　金：国家自然科学基金(51767007);江西省工业科技支撑计划项目(20161BBE50057);江西省自然科学基金(20161BAB206157);江西省教育厅自然科学基金(GJJ160495)

摘　　要：针对于传统混合级联H桥多电平逆变器混合调制控制存在电流倒灌和功率不均衡等问题,通过详细分析和比较各种混合级联H桥多电平逆变器混合调制策略,提出一种阶梯波和载波混合调制的功率均衡控制方法,理论分析了各个H桥单元输出电压基波幅值与输出有功功率的关系,给出了混合级联H桥多电平逆变器输出电压基波幅值关于调制度的函数曲线和输出相电压的谐波失真曲线。最后通过仿真和实验验证了该方法能够在解决电流倒灌问题的同时实现混合级联H桥多电平逆变器各个H桥单元的功率均衡。According to the traditional hybrid cascaded H-bridge multilevel inverter modulation control problems of current intrusion and power imbalance,through detailed analysis and comparison of various hybrid cascaded H bridge multilevel inverter hybrid modulation strategy,a step wave and carrier wave hybrid power balance control metliod is put forward.It carried out tlie theoretical analysis of tlie relationship between the fundamental voltage amplitude of each H-bridge output unit and active power output,and gave the function cure of hybrid cascaded H bridge multilevel inverter output voltage amplitude and modulation&and the output voltage total harmonics distortion cure.Finally,the simulation and experimental results showthat the proposed method can achieve the power balance of the H bridge units in the hybrid cascaded H bridge multilevel inverter while solving the current intrusion problem.

关 键 词：混合级联H桥多电平逆变器 电流倒灌 功率均衡 

分 类 号：TM46[电气工程—电器]