PMAC motor control strategy, based on the instantaneous active and reactive power, for ripple-torque and copper-losses minimization

A new strategy, based on the instantaneous reactive power theory, to control a permanent magnet AC motor (PMACM) is proposed. This strategy allows controlling the motoring torque and, simultaneously, minimizing ripple torque and copper-losses. Its practical implementation can be accomplished with a simple software and hardware scheme. To exemplify the proposal, the case of an axial-flux PMACM with a quasi-trapezoidal back-EMF is presented and some simulation results are shown.