Title :
Switched reluctance motor drive without direct rotor position sensing
Author :
Panda, S.K. ; Amaratunga, G.A.J.
Author_Institution :
Dept. of Eng., Cambridge Univ., UK
Abstract :
A closed loop control technique based on monitoring phase current risetime for switched reluctance (SR) motors without direct rotor-position sensors has been studied and implemented successfully. In this technique the variation in incremental phase inductance in a SR motor is used to detect rotor position. A control circuit for current-waveform-based rotor position detection has been implemented using hard-wire digital circuits. Torque-speed and system-efficiency characteristics resulting from the application of the method to a 4 kW, four-phase SR motor with an IGBT drive are presented.<>
Keywords :
closed loop systems; digital control; electric drives; inductance measurement; machine control; monitoring; position control; reluctance motors; rotors; 4 kW; IGBT drive; closed loop control; digital control; four-phase; hard-wire digital circuits; incremental phase inductance; machine control; monitoring; phase current risetime; rotor position; switched reluctance motor drives; Digital circuits; Inductance; Induction motors; Insulated gate bipolar transistors; Monitoring; Phase detection; Reluctance motors; Rotors; Sensor phenomena and characterization; Strontium;
Conference_Titel :
Industry Applications Society Annual Meeting, 1990., Conference Record of the 1990 IEEE
Conference_Location :
Seattle, WA, USA
Print_ISBN :
0-87942-553-9
DOI :
10.1109/IAS.1990.152235
