Development of a five-phase synchronous motor with permanent magnets

In this paper the design, mathematical and simulation models of a five-phase synchronous motor with permanent magnets and a simulation model of a control device have been developed. A mathematical model of electromagnetic processes in a five-phase motor and control system with three feedback loops has been developed in Matlab Simulink environment. The inner fast loop provides control of currents along d and q axes by means of PI controllers, which allows keeping the total stator current vector perpendicular to the rotor current-circuit vector and providing the highest torque. The middle circuit provides control of angular speed of shaft rotation by means of PI-controllers. The outer circuit provides control of the angular position of the motor rotor by means of the P controller. The parameters of the regulators are optimized. The transient process has no overshoot and the control time is 2.6 seconds. A prototype of the motor has been developed and manufactured.