Because the connecting modes are very flexible and diversified

VSC-HVDC will face the problems such as three-phase unbalanced condition that will affect the normal operation of the whole system

especially it connects to the low voltage dispatched grids.Dual current closed loop control method can solve the problem

but it too complicated.So the predictive current method was presented in this paper to solve the problem eventually.This method can control the VSC-HVDC system simply and achieve perfect effect at the same time.The final simulation results show excellent performance of the proposed control strategy for the VSC-HVDC under unbalanced condition.