期刊文献+

基于虚拟输出阻抗分析的并联三相四桥臂逆变器环流抑制 被引量:7

Output Impedance Analysis for Circulating Current Minimization of Paralleled Three Phase Four Leg Inverter
下载PDF
导出
摘要 三相四桥臂(3P4L)逆变器在三相三桥臂逆变器的基础上引入第四桥臂,使得三相能够解耦控制并具备带不对称负载能力。多个逆变单元共输入、输出方式并联,能够实现功率扩容,但同时也带来并联单元之间的环流问题。而3P4L由于其独特的拓扑结构,其并联控制策略较单相或三相三桥臂逆变器并联更为复杂。在基于双闭环平均电流均流控制的并联3P4L逆变器控制策略基础上,建立并联系统的小信号模型,并由此获得并联桥臂的虚拟输出阻抗模型。分析控制环路以及主电路参数与虚拟输出阻抗的关系,根据分析结果指导环路与主功率器件的参数设计,达到抑制并联桥臂环流、提高并联单元均流性能的目的,最后提出基于虚拟输出阻抗分析法的并联环流抑制方法,通过仿真和实验验证了该方法的正确性。 Compared to three-phase three-leg inverter, the control of three-phase four-leg(3P4L) inverter could be decoupled to be able to work with unbalanced load. In recent years, parallel inverter has been widely used in power electronic converter system. If current is out of control in parallel inverters connected with the same input and output buses, circulating current will exist in four legs of parallel 3P4 L inverters, which may damage converter seriously. Based on dual closed loop control strategy, output impedance modeling is created in this paper by using small signal modeling method. Thereby, output impedance analysis about the relationships between control loop parameters, main circuit and output impedance is accomplished. Accordingly, a design method is proposed to minimize circulating current. Finally, simulation and experimental results verify the analysis method.
出处 《电工技术学报》 EI CSCD 北大核心 2016年第8期51-62,共12页 Transactions of China Electrotechnical Society
基金 国家自然科学基金资助项目(51377079)
关键词 并联三相四桥臂逆变器 平均电流控制 环流 3次谐波注入 Parallel three-phase four-leg inverter average current control zero-sequence circulating current 3rd harmonic injection
  • 相关文献

参考文献18

  • 1Vechiu I, Curea O, Camblong H. Transient operation of a four-leg inverter for autonomous applications with unbalanced load[J]. IEEE Transactions on Power Electronics, 2010, 25(2): 399-407.
  • 2Kim J H, Sul S K. A carrier-based PWM method for three-phase four-leg voltage source converters[J]. IEEE Transactions on Power Electronics, 2004, 19(1): 66-75.
  • 3官二勇,宋平岗,叶满园.基于三次谐波注入法的三相四桥臂逆变电源[J].电工技术学报,2005,20(12):43-46. 被引量:33
  • 4Xu Zhuang, Li Rui, Zhu Hui, et al. Control of parallel multiple converters for direct-drive permanent- magnet wind power generation systems[J]. IEEE Transactions on Power Electronics, 2012, 27(3): 1259-1270.
  • 5Pouya H R Z, Mokhtari H. Control of parallel three-phase inverters using optimal control and SVPWM technique[C]//IEEE International Symposium on Industrial Electronics, Seoul, 2009: 1823-1828.
  • 6Tuladhar A, Jin H, Unger T, et al. Parallel operation of single phase inverters with no control interconne- ctions[C]// IEEE Applied Power Electronics Confer- ence and Exposition, 1997, 1: 94-100.
  • 7Chiang S J, Chang J M. Parrallel control of the UPS inverters with frequency dependent droop scheme[C]// Power Electronics Specialists Conference, 2001, 2: 957-961.
  • 8闫耀民,范瑜,汪至中.一种改进的电压电流混合控制的并联逆变器[J].铁道学报,2003,25(3):55-58. 被引量:3
  • 9肖岚,胡文斌,蒋渭忠,严仰光.基于主从控制的逆变器并联系统研究[J].东南大学学报(自然科学版),2002,32(1):133-137. 被引量:38
  • 10程荣仓,刘正之.大容量单相逆变装置并联技术的分析[J].中国电机工程学报,2004,24(7):112-116. 被引量:19

二级参考文献81

共引文献463

同被引文献68

引证文献7

二级引证文献30

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部