A large number of PI parameters are existed in traditional grid shunt inverters and with such disadvantages as slow dynamic response and difficult adjustment of parameters. Therefore

a kind of new type deadbeat current prediction and control is proposed with such advantage as fast dynamic response

high control accuracy and less grid current distortion. For solving inherent circulating current issue of shunt inverter in further

a new type of SPWM modulation strategy injecting zero sequence components to achieve suppression of circulating current. On the basis of analyzing the model of shunt inverters

the deadbeat prediction and control is proposed to achieve suppression of circulating current. It is verified by the experimental result that SPWM modulation strategy proposed can achieve fast tracking current of grid and circulating current control simultaneously.