Predictive current control for dual three phase induction machine with phase locked loop based electromotive force prediction

Recently, predictive current control(PCC) has been applied to the dual three phase induction machine(DTPIM). Although the exist PCC methods show a better current control performance than PI controller, the current control in harmonic sub-space of DTPIM is essentially an open loop control scheme. In this paper, a PCC which realizes close control both in fundamental and harmonic sub-spaces is proposed and a better current performance is achieved. Besides, the prediction of the electromotive force(EMF) is one of the important parts in PCC. The existing methods do not handle the unavoidable noise properly which could result the prediction error of EMF. To solve the problem, a phase locked loop based EMF prediction method is proposed to reduce the negative effects of the noise. Some simulation and experimental results are provided to validate the proposed strategy.