用于低于6Hz以下频率的振幅补偿，当然也可修改振幅补偿的频率-For lower frequencies below 6Hz amplitude compensation , of course, can also modify the frequency amplitude compensation

In order to solve the power quantity problem of negative sequence current and harmonic current in high-speed railway, railway static power conditioner (RPC) was adopted. RPC contains two inverters which are connected with each other by sharing a DC c