The method of combining the hysteretic control method and fore-feed control of reflowing current was adapted for its simpleness and efficiency considering that the system has been in operation.

• 考虑到是在原有已应用的系统上进行完善来避免直流侧电压的抬升，采用相对方便和简单的滞环控制和回灌电流前馈控制相结合的方法。