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Design and implementation of the control of an MMC-based solid state transformer

机译：基于MMC的固态变压器的控制设计与实现

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Implementation of the control of a Solid State Transformer (SST) is described in this paper. The SST topology considered is derived from a Modular Multilevel Converter (MMC), in which the cells have the capability to transfer (inject or drain) power. The MMC is combined with an isolation stage formed by Dual Active Bridges (DABs) and a DC/AC power converter. The resulting modular multiport power converter can connect both high voltage and low voltage AC and DC ports, providing isolation between the high voltage and the low voltage terminals, and with full control of the power flow. Implementation of the control of this power converter is not trivial, due to the large amount of power devices and sensors involved, and to the complexity of the control algorithms. Furthermore, the need to provide isolation among the different stages adds further concerns mainly related with cost. This paper discusses the configuration, selection of the required hardware, as well as implementation aspects for the control of the proposed SST topology.
机译：本文介绍了固态变压器（SST）控制的实现。所考虑的SST拓扑结构是从模块化多电平转换器（MMC）派生而来的，在该模块中，单元具有传输（注入或排放）功率的能力。 MMC与由双有源桥（DAB）和DC / AC电源转换器形成的隔离级结合在一起。最终的模块化多端口电源转换器可以连接高压和低压AC和DC端口，从而在高压和低压端子之间提供隔离，并完全控制功率流。由于所涉及的大量功率设备和传感器以及控制算法的复杂性，该功率转换器的控制实现并非易事。此外，在不同阶段之间提供隔离的需求增加了主要与成本有关的进一步关注。本文讨论了配置，所需硬件的选择以及控制所提出的SST拓扑的实现方面。

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