Modular multilevel converter (MMC) may contain a large number of submodules (SMs). The overall reliability of MMC strongly relies on the comprehensive testing and validation of SMs. However, building a relatively complete MMC system/arm for the testing of SMs is time-consuming and costly. In this article, mission profile emulator (MPE) for individual SM of MMC is presented along with the design and control methods. By the proposed schemes, the complete electrical characteristics including the load current and capacitor voltage of SM under test can behave closely to the actual SM in an MMC system. Moreover, the current ripple, which is an important loading factor for SM, can be accurately designed and restrained. Both the simulation and experimental results are provided to validate the effectiveness of the proposed methods.

中文翻译：

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基于CPS-PWM的模块化多电平转换器中单个子模块的任务轮廓仿真器的控制与设计

模块化多电平转换器 (MMC) 可能包含大量子模块 (SM)。MMC 的整体可靠性在很大程度上依赖于 SM 的综合测试和验证。然而，为 SM 的测试构建一个相对完整的 MMC 系统/臂是耗时且昂贵的。在本文中，介绍了 MMC 单个 SM 的任务配置文件仿真器 (MPE) 以及设计和控制方法。通过所提出的方案，包括被测SM的负载电流和电容器电压在内的完整电气特性可以与MMC系统中的实际SM表现得非常接近。此外，电流纹波是 SM 的重要负载因素，可以精确设计和抑制。提供了仿真和实验结果来验证所提出方法的有效性。