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Control design of Modular Multilevel Converters in normal and AC fault conditions for HVDC grids

机译:HVDC电网在正常和交流故障条件下的模块化多电平转换器的控制设计

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This paper describes a control design strategy of Modular Multilevel Converters (MMC) for High Voltage Direct Current (HVDC) applications to operate during normal and AC fault conditions. First, a steady state analysis of the converter is performed to identify the uses of the current components within the control strategy. Based on the initial stationary study, a complete converter control structure is proposed, which enables full control of the MMC internal energy during normal and AC fault conditions. A detailed design procedure is included for the current and energy regulators, in order to be able to ensure a dynamic response under any grid condition. Finally, theoretical developments are validated through simulation results by means of a detailed model in normal operation and during an AC voltage sag. (C) 2017 Elsevier B.V. All rights reserved.
机译:本文介绍了一种用于高压直流(HVDC)应用的模块化多电平转换器(MMC)的控制设计策略,以在正常和AC故障情况下运行。首先,对转换器进行稳态分析,以识别控制策略中当前组件的用途。在初步的静态研究基础上,提出了一个完整的转换器控制结构,该结构可在正常和AC故障情况下完全控制MMC内部能量。包括用于电流和能量调节器的详细设计程序,以便能够确保在任何电网条件下的动态响应。最后,在正常工作和交流电压跌落期间,通过详细模型的仿真结果验证了理论进展。 (C)2017 Elsevier B.V.保留所有权利。

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