Title :
Investigation on resolution of initial position estimation for IPMSM
Author :
Li, Zhaofeng ; Kawamura, Atsuo
Author_Institution :
Fac. of Eng., Yokohama Nat. Univ., Yokohama, Japan
Abstract :
Resolution of Initial position estimation based on high frequency voltage signal injection for IPMSM was investigated. The simulation was carried out to investigate the influence of inductance saturation due to motor drive currents and quantization errors due to A/D conversion on the estimation accuracy. An experimental system consisting of a IPM motor and a voltage-source PWM inverter has been implemented to investigate position estimation accuracy. The simulation results show that estimation accuracy depends on the resistance-to-reluctance ratio at zero speed. However, experimental results show that estimation accuracy is affected significantly by inverter output voltages and configuration of the test motor.
Keywords :
PWM invertors; analogue-digital conversion; permanent magnet motors; position measurement; synchronous motor drives; A-D conversion; IPM motor; IPMSM; high frequency voltage signal injection; inductance saturation; initial position estimation; interior permanent magnet synchronous machines; motor drive currents; quantization errors; resistance-to-reluctance ratio; voltage-source PWM inverter; Accuracy; Estimation; Inductance; Inverters; Pulse width modulation; Rotors; Stators; IPM motor; estimation accuracy; initial position; sensorless control;
Conference_Titel :
Power Electronics and Motion Control Conference (EPE/PEMC), 2010 14th International
Conference_Location :
Ohrid
Print_ISBN :
978-1-4244-7856-9
DOI :
10.1109/EPEPEMC.2010.5606665
