PMSM sensorless speed control drive

Abstract EN

Permanent magnet synchronous machines (PMSM) arevery popular in many industrial applicationssuchasinmechatronics, automotive, energy storage flywheels, centrifugal compressors, vacuum pumps,androbotics.

This paper proposes Sensorless control for a PMSM speed drive which is based on aclosedloopcontrol system using a proportional and integral (PI)controller that is designed to operate influx weakening regionsunder a constant torque angle.ThisSensorlesselementwasadopted for best estimating the PMSM rotor position based on its performance characteristicseliminatingthe need forspeed sensorswhich are usually required insuchcontrol applications.

To achieve this goal, apulse width modulation (PWM)control scheme was developed to work in conjuction with a field oriented motor controldriveusingSimulink.Thisinnovative control system was simulated assuming realistic circuit components to maximize the accuracy of the proposed model.Finally, simulation results obtained under different operation conditions at below and above the rated speed of the motorwere presented and discussed in this paper.