通过优化的前馈环流和共模电压改善电网侧模块化多电平变换器的能量平衡

In contrast to the conventional feedback approach, the energy balancing task of a grid-side modular multilevel converter (MMC) with half-bridge cells and an isolated ac star point is considered as an optimization problem. As a result, nominal trajectories for circulating currents and common-mode voltage are obtained that inherently steer the system back to a balanced operation within finite time. ...