Current deadbeat decoupling control of three-phase grid-connected inverter

Aiming at the characteristics of three-phase grid-connected inverter, a novel strategy based on current deadbeat decoupling control is put forward in this paper and the calculation method of duty cycle of deadbeat decoupling control is also proposed. This method combines three-phase system´s decoupling characteristics in the dq synchronous rotating reference frame with deadbeat control algorithm in abc reference frame, which not only realize decoupling control of active power and reactive power but also have the characteristics of simple control, high control accuracy and fast dynamic response and so on. Finally, the results of simulation and experiment confirm the correctness and effectiveness of this control strategy.