The Field-Orientated-Control Algorithm for Permanent Magnet Synchronous Motor in 60° Coordinate System

The field-oriented-control algorithm in 60° coordinate system for permanent magnet synchronous motor is described in this paper. Field-oriented-control algorithm consists of several parts and in 60° coordinate system the expression form of the reference currents and feedback currents is different from traditional methods. The value of the reference voltage vector in 60° coordinate system is directly obtained after the current proportional-integral controller. Then the speed control of permanent magnet synchronous motor is realized by proportional-integral controller combined with SVPWM algorithm in 60° coordinate system. Simulation results confirm the feasibility of FOC algorithm in 60° coordinate system.