Model predictive current control of a quasi sixphase voltage source inverter

The paper presents model based current control of a six-phase voltage source inverter considering a finite set of control actions. The space vector model of a six-phase voltage source inverter (VSI) yields 64 vectors, with 60 active and four zero vectors. The presented technique utilizes reduced number of switching actions to track the reference current. Only 13 space vectors are utilized for the current control and hence the name finite control set is given. Optimal algorithm is employed to find the vector which minimizes the chosen cost function. The effect of selecting the cost function, the number of space vectors and the sampling time is investigated and reported. The developed technique is tested for RLE load using simulation approach.