Title :
A Novel Method of Initial Rotor Position Estimation for Surface Mounted Permanent Magnet Synchronous Motor
Author :
Li Shuai ; Zhou Bo ; Liu Ying ; Feng Ying
Author_Institution :
Aero-power Sci-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China
Abstract :
The initial rotor position estimation for a surface mounted permanent magnet synchronous motor(SPMSM) is an essential part of the SPMSM sensorless control system. Its accuracy directly determines whether the motor could be stated-up successfully. In this regard, a novel method is proposed. Using fluctuating high frequency injection, the estimated angle can be gotten through closed-loop regulation. Based on the characteristics of time constant belonging to the direct-axis equivalent circuit, polarity determination can be achieved. The simulation investigation and experimental results show that the method is correct.
Keywords :
equivalent circuits; permanent magnet motors; sensorless machine control; synchronous motors; SPMSM sensorless control system; closed-loop regulation; direct-axis equivalent circuit; high frequency injection fluctuation; initial rotor position estimation method; polarity determination; surface mounted permanent magnet synchronous motor; time constant; Estimation; Frequency synchronization; Permanent magnet motors; Permanent magnets; Rotors; Sensorless control; Synchronous motors; fluctuating high frequency injection; initial rotor position; polarity determination; surface mounted permanent magnet synchronous motor (SPMSM);
Conference_Titel :
Electrical and Control Engineering (ICECE), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6880-5
DOI :
10.1109/iCECE.2010.1191