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提出了光伏并网系统的无差拍解耦控制策略，并将其应用于三相z源光伏并网逆变器中。通过无差拍控制与改进的空间矢量脉宽调制技术相结合，实现了z源光伏并网系统有功与无功功率的解耦控制。采用双时采样策略减少了无差拍控制由于采样与运算时间的存在造成的控制延时，提高了无差拍控制的精度与稳定性。仿真与实验结果表明，该控制策略能实现z源的升压，并网电流谐波畸变率低，而且能实现并网电流与电网电压同相位即单位功率因数运行。郑建勇“,”An improved deadbeat decoupling control strategy is proposed and applied in three-phase grid connected Z-source inverter. By means combining deadbeat control strategy with improved space vector pulse width modulation （SVPWM） technology, the decopling control of of active and reactive power of the grid connected Z-source inverter. The control dealy in deadbeat control due to sampling time and calculation time is reduced by dual-timer sampling, thus the accuracy and stability of deadbeat control are improved. Results from simulation and experiments show that using the proposed contol strategy the Z-source voltage boost as well as the cophase of current injected into grid and grid voltage, namely the unity power factor operation, can be implemented.