Control of hexagonal Modular Multilevel Converter for 3-phase BTB system
Control of hexagonal Modular Multilevel Converter for 3-phase BTB system
复制标题
DOI：
10.1109/ipec.2014.6870026
复制
发表时间：
2014-05
期刊：
影响因子：
--
通讯作者：
S. Hamasaki;K. Okamura;Takashi Tsubakidani;M. Tsuji
中科院分区：
文献类型：
--
作者：
S. Hamasaki;K. Okamura;Takashi Tsubakidani;M. Tsuji
级联全桥单元模块化多电平变流器(MMC)适用于高压线路无变压器交-交输电系统。本研究将六角形MMC(H-MMC)应用于三相交-交背靠背(BTB)系统。H-MMC有六个带浮动电容器的ARM模块，需要通过控制ARM模块中的电流来调节输入输出功率和电容器电压。分析了H-MMC的潮流理论，提出了H-MMC的潮流控制和电容调压控制方案。ARM模块中的电流由内模原理控制，H-MMC可以正常工作。仿真和实验结果表明了该控制方法的有效性。
The Modular Multilevel Converter (MMC) with cascaded full bridge cells is available for AC/AC transmission system without transformers in high voltage line. This research applied a Hexagonal MMC (H-MMC) to 3-phase AC-AC back-to-back (BTB) system. The H-MMC has six arm modules with floating capacitors and is required to regulate the input-output power and capacitor voltages by controlling currents in arm modules. Theory of the power flow of H-MMC is analyzed and the control scheme of the power flow and capacitor voltage regulation is proposed. Currents in the arm modules are controlled by the internal model principle and H-MMC can operate appropriately. Effectiveness of the proposed control method is presented in simulation and experiment.