Title :
Position-sensorless control of direct drive permanent magnet synchronous motors for railway traction
Author :
Frenzke, Thorsten ; Piepenbreier, Bernhard
Author_Institution :
Erlangen-Nuremberg Univ., Erlangen, Germany
Abstract :
A procedure for position-sensorless control of permanent magnet synchronous motors with surface mounted magnets is proposed, that is suitable to large traction drives with their restrictions like high inverter-utilisation and low switching frequency. An observer using a voltage and an inductance motor model together with test signal injection at low speed obtains position and speed. Improvements of the basic estimation scheme are presented. The method has been tested successfully in the lab with a 28 kW standard servomotor.
Keywords :
invertors; machine control; permanent magnet motors; position control; railways; synchronous motor drives; traction; 28 kW; direct drive permanent magnet synchronous motors; observer; position-sensorless control; railway traction; servomotor; surface mounted magnets; Inductance; Induction motors; Permanent magnet motors; Rail transportation; Servomotors; Switching frequency; Synchronous motors; Testing; Traction motors; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual
Print_ISBN :
0-7803-8399-0
DOI :
10.1109/PESC.2004.1355623
