一种无需内部测量的模块化多电平变换器子模块电容电压估计器

In this article, a modular multilevel converter (MMC) submodule (SM) capacitor voltage estimator, which determine the state of the capacitors measuring the bus voltage, output voltage, and current, is proven via simulation and experimentation. The estimator deals with the complete elimination of sensors for internal converter states in an MMC. This is achieved through a state observer based on an ...