| 基于MMC的整流系统在不对称桥臂下的环流抑制方法 |
| |
| 引用本文： | 李赟贵,杭丽君,李国杰.基于MMC的整流系统在不对称桥臂下的环流抑制方法[J].电气自动化,2017,39(2). |
| |
| 作者姓名： | 李赟贵 杭丽君 李国杰 |
| |
| 作者单位： | 上海交通大学电子信息与电气工程学院,上海,200240 |
| |
| 基金项目： | 国家重点研发计划项目"大型光伏电站直流升压汇集接入关键技术及设备研制" |
| |
| 摘 要： | 模块化多电平变换器(MMC)存在内部环流,在MMC系统上、下桥臂不对称情况下其环流复杂程度增大。基于平均电容电压的控制模型,通过引入低通滤波环节与准比例谐振控制的方法,完成了对MMC系统在不对称桥臂下的环流抑制。最后,在MATLAB/Simulink仿真系统与实际的三相MMC样机平台上,分别对改进前后的控制方案进行实验。通过仿真与实验结果,验证了基于MMC的整流系统在上、下桥臂不对称情况下,环流抑制策略的有效性。
|
| 关 键 词： | 模块化多电平变换器 环流谐波抑制 电容电压均衡 低通滤波器 准比例谐振控制器 |
A Circulating Current Suppression Method for MMC-based Rectification System with Asymmetric Bridge Arms |
| |
| Li Yungui,Hang Lijun,Li Guojie.A Circulating Current Suppression Method for MMC-based Rectification System with Asymmetric Bridge Arms[J].Electrical Automation,2017,39(2). |
| |
| Authors: | Li Yungui Hang Lijun Li Guojie |
| |
| Abstract: | There exists circulating current within the modular multi-level converters (MMC).In case the MMC has asymmetric upper and lower bridge arms, complexity of the circulating current will increase.Based on a control model of average capacitor voltage, suppression of circulating current is effected for the MMC system with asymmetric bridge arms through introduction of a low-pass filter and quasi-PR control.Finally, control schemes before and after improvement are tested respectively on |
| |
| Keywords: | modular multilevel converter (MMC) circulating harmonic suppression capacitor voltage balance low-pass filter quasi-PR controller |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
