一种基于滞环控制策略的混合直流斩波器功率损耗与热能优化方法

DC chopper used to absorb the surplus power to prevent the devices from been damaged by the dc overvoltage is one of the important equipment for the offshore wind farm grid connection via the modular multilevel converter-HVdc system. A hybrid dc chopper structure composed of cascaded submodules and a lumped resistor is proposed in which the distributed resistor is deployed inside each submodule. D...