中国电机工程学报Issue(27)：36-43,8.
一种MMC-HVDC的直流电压波动抑制新方法
A New Approach for Suppressing DC Voltage Ripples of MMC-HVDC
摘要
Abstract
Since the common solution for eliminating DC voltage ripples in voltage sourced converter based high voltage direct current (VSC-HVDC) transmission system has some drawbacks, this paper proposed a new method applied to modular multilevel converter based high voltage direct current (MMC-HVDC). The method uses the sub-module energy storage capability in MMC, making the instantaneous active power between ac and dc side of MMC unequal under unbalanced AC system. Meanwhile, this method keeps the ac current balanced, and eliminates the DC voltage, DC current and DC power ripples as well. To fulfill such a control goal, according to the dc-loop model of MMC, a controller inαβ0 frame based on proportional resonant regulator was designed, and then the coordinated control strategy was discussed in case of MMC-HVDC. Finally, a back-to-back MMC-HVDC simulation model with 71 levels was built to verify the proposed controller. The results show that the controller works well under both balanced and unbalanced AC system.关键词
模块化多电平换流器/直流输电/交流系统不对称/直流电压波动/比例谐振调节器Key words
modular multilevel converter (MMC)/high voltage direct current (HVDC)/unbalanced AC system/DC voltage ripples/proportional resonant regulator分类
信息技术与安全科学引用本文复制引用
周月宾,江道灼,胡鹏飞,梁一桥,郭捷,林志勇..一种MMC-HVDC的直流电压波动抑制新方法[J].中国电机工程学报,2013,(27):36-43,8.基金项目
浙江省重点科技创新团队(2010R50004)。Projected Supported by Key Innovation Team of Zhejiang Province (2010R50004) （2010R50004）
