Experimental verification of hexagonal modular multilevel converter for 3-phase system
Experimental verification of hexagonal modular multilevel converter for 3-phase system
复制标题
三相系统六角形模块化多电平换流器的实验验证
DOI：
10.1109/iecon.2015.7392517
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Mineo Tsuji
中科院分区：
文献类型：
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作者：
Shin-ichi Hamasaki;Takashi Tsubakidani;Syunsuke Eguchi;Mineo Tsuji
模块化多电平变换器（MMC）是一种新型的多电平变换器，可用于电力系统中的逆变器和交流输电系统中，在高压线路中不需要变压器。当它与电力线互连时，可以控制有功功率流，以便在线路中提供或充电功率。本研究将一种H-MMC应用于三相交-交变频系统。H-MMC具有六个带浮地电容的臂模块，这些臂模块以六边形形状连接。要求通过控制臂模块中的电流来调节输入功率、输出功率和浮地电容电压。这些电流可以通过内模原理控制，并且H-MMC可以可靠地运行。阐述了H-MMC控制的原理，并进行了仿真和实验。实验验证了该控制方法在典型工况下的有效性。
The modular multilevel converter (MMC) with cascaded full bridge cells is available for a utility interactive inverter and AC/AC transmission system without transformers in high voltage line. When it is interconnected with power line, it is possible to control the active power flow in order to supply or charge the power in the line. This research applied a Hexagonal type MMC (H-MMC) to 3-phase AC-AC conversion system. The H-MMC has six arm modules with floating capacitors, which are connected in a shape of hexagon. It is required to regulate input power, output power and floating capacitor voltages by controlling currents in arm modules. These currents can be controlled by internal model principle and H-MMC can operate reliably. Theory of H-MMC control is explained and the operation is performed in simulation and experiment. Effectiveness of the proposed control method in some typical conditions is verified in experiment.