Title :
A study on an inductance change compensation method for a PMSM rotor angle sensorless control system
Author :
Kondo, K. ; Kim, Koken
Author_Institution :
Grad. Sch., Chiba-Unibersity, Inage, Japan
Abstract :
In this study, a q-axis inductance compensation method is studied to improve the stability of the PMSM rotor angle sensorless control system using the induced voltage. By a theoretical study, the rotor angle estimation error, which sometimes results in an unstable phenomenon, is caused by the error of the q-axis inductance due to flux saturation. A compensation method using the voltage is studied theoretically to reveal the effectiveness and to obtain the reference for designing the set value of q-axis inductance in the controller. The method is also verified experimentally both in lower and higher speed range.
Keywords :
compensation; inductance; permanent magnet motors; rotors; synchronous motors; PMSM rotor angle; flux saturation; induced voltage; inductance change compensation; q-axis inductance compensation; rotor angle estimation error; sensorless control; Equations; Estimation error; Inductance; Induction motors; Permanent magnet motors; Rotors; Sensorless control; Stability; Torque; Voltage control; compensation; parameter change; sensorless control; stability;
Conference_Titel :
Electrical Machines and Systems, 2009. ICEMS 2009. International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5177-7
Electronic_ISBN :
978-4-88686-067-5
DOI :
10.1109/ICEMS.2009.5382815
