Model Predictive Current Control of Dual Inverter Fed Open-End Winding PMSM Based on Fast Vector Selection

Aiming at the problem of model predictive current for the dual two-level inverter needs to optimize the objective function of all 19 voltage vectors, which makes the calculation of optimization too large for practical application. A MPCC scheme for open-winding pmsm based on voltage vector preselection was proposed. First, the pre-selection of the voltage vector is performed by calculating the reference voltage vector using the deadbeat solution. And establish a voltage vector based objective function to achieve predictive current control and simplify the control algorithm. Next, the switching frequency constraint is introduced into the objective function to select the optimal switching state and reduce the average switching frequency. Finally, the simulation is verified and the effectiveness of the method is proved.