The mission profile emulator (MPE) proves to be an effective and cost-efficient approach to validate the design and reliability of the submodule (SM) in a modular multilevel converter (MMC). This article established the detailed models for the capacitor voltages of SM in the MMC system. The factors that can determine the dc component of capacitor voltages in SM of MMC are analytically solved. The difference between the capacitor voltage of SM in a complete MMC system and that of SM in MPE is discovered, explained, and verified. In order to improve the emulating accuracy for the capacitor voltage in SMs of the MPE, a novel voltage control method, which is more adaptive to the operating conditions of MMC, is proposed. The simulation models and experimental setup are built to verify the validity of the proposed methods.

中文翻译：

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模块化多电平变流器子模块任务轮廓仿真器的电容电压控制


事实证明，任务剖面仿真器 (MPE) 是一种有效且经济高效的方法，可用于验证模块化多电平转换器 (MMC) 中子模块 (SM) 的设计和可靠性。本文建立了MMC系统中SM电容电压的详细模型。分析求解了决定MMC SM中电容电压直流分量的因素。发现、解释和验证了完整MMC系统中SM的电容器电压与MPE中SM的电容器电压之间的差异。为了提高MPE中SM电容电压的仿真精度，提出了一种更适应MMC工作条件的新型电压控制方法。建立仿真模型和实验装置来验证所提出方法的有效性。