Prototype design and experimental verification of modular multilevel converter based back-to-back system
Prototype design and experimental verification of modular multilevel converter based back-to-back system
复制标题
基于模块化多电平变流器背靠背系统的原型设计与实验验证
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Rongfeng Yang
中科院分区：
文献类型：
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作者：
Binbin Li;Dandan Xu;Dianguo Xu;Rongfeng Yang
提出了一种基于模块化多电平换流器（MMC）的背靠背（BTB）系统的设计和控制方法。最后，以一台20kW，50Hz三相小型化样机为例，介绍了其工作原理、硬件设计过程和控制电路的实现。在该原型中，有两个MMC站，即逆变器和整流器，每个MMC站由18个全桥（FB）子模块（SM）组成。每个站由一个独立的控制器控制。此外，还介绍了各子模块的管理和通信方法。此外，基于MMC的BTB系统的控制原理，以及实现功率调节和平衡所有SM电容器电压。最后给出了实验结果，验证了电路设计的正确性和控制方法的有效性。
This paper presents the design and control methods for a modular multilevel converter (MMC) based back-to-back (BTB) system. A 20kW, 50Hz three phase downscaled prototype is constructed to show the working principles, hardware design procedures, and control circuits implementation. In this prototype, there are two MMC stations, namely the inverter and the rectifier, each consisting of 18 full-bridge (FB) sub-modules (SMs). Each station is controlled by an independent controller. Moreover, the management and communication methods of these sub-modules are also illustrated. Further, the control principles for the MMC based BTB system are presented as well to achieve power regulation and balance all the SM capacitor voltages. Finally, experimental results are given to verify the validity of the circuit design and show the effectiveness of the control methods.