组合多电平式APF直流侧电压平衡控制策略  

Combined Multi-level Inverter and DC Side Voltage Balance Control

作　　者：张国军[1] 冀蓬举[1] 李国华[1] 

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105

出　　处：《河南师范大学学报（自然科学版）》2013年第6期46-50,共5页Journal of Henan Normal University(Natural Science Edition)

基　　金：国家自然科学基金青年基金(51307076);辽宁省创新团队基金项目(2008T079)

摘　　要：H桥级联式多电平变流器用于有源电力滤波器(APF)时,H桥功率单元直流侧电容电压的平衡制约着系统补偿的性能.通过对应用两电平变流器或H桥级联式多电平变流器的APF的研究,提出了更有利于实现多电平APF直流侧电容电压平衡控制的组合式多电平变流器拓扑;以新的多电平拓扑为基础,提出了2电压环的直流侧电压控制策略,解决了多电平有源电力滤波器直流侧电压平衡问题.仿真实验证明,该组合式多电平变流器拓扑是有效实用的,直流侧电容电压平衡控制策略也具有良好的控制效果.When H bridge cascade multilevel converter type is used for Active Power Filter （APF）, the performance of the system compensation is limited by the H bridge power unit of capacitor voltage balance. Through research on APF with two-level converter or H bridge cascade multi-level converter, this paper proposes a more conducive method to realize multi-lev- el APF DC-link capacitor voltage balance control of the modular multi-level converter topologies. On the basis of the new multi- level topology, this paper proposes a dual voltage loop DC voltage control strategy, solving the multilevel DC-link voltage bal- ance problem of APF. Simulation experiments show that the modular multilevel converter topology is effective and practical. DC-link capacitor voltage balance control strategy has good control effect.

关 键 词：有源电力滤波器 多电平变流器 直流侧电压平衡 

分 类 号：TM76[电气工程—电力系统及自动化]