Title :
Developing a sensorless approach for switched reluctance motors from a new analytical model
Author :
Saha, Subrata ; Ochiai, Kiyoe ; Kosaka, Takashi ; Matsui, Nobuyuki ; Takeda, Yoji
Author_Institution :
Nagoya Inst. of Technol., Japan
Abstract :
In this paper, a new analytical model for the nonlinear flux-linkage/current characteristics of the switched reluctance motors (SRM) at different rotor positions is proposed. The uniqueness of the model lies in a simple algorithm for estimating the rotor position. Hence, a sensorless drive of the SRM is implemented using this analytical model. The estimation of the rotor position under different operating conditions of the SRM is found to be very stable when the speed is varied within a ratio of 1:20 and the applied load is changed from 0 to 100%. Thus, excellent performance of the sensorless drive is obtained and is reported in details
Keywords :
angular velocity control; electric current control; machine control; parameter estimation; reluctance motor drives; rotors; two-term control; PI speed regulator; analytical model; nonlinear current characteristics; nonlinear flux-linkage characteristics; rotor positions estimation; sensorless approach; sensorless drive; speed control; switched reluctance motors; Analytical models; Costs; Couplings; Equations; Magnetization; Polynomials; Reluctance machines; Reluctance motors; Rotors; Sensorless control;
Conference_Titel :
Industry Applications Conference, 1999. Thirty-Fourth IAS Annual Meeting. Conference Record of the 1999 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5589-X
DOI :
10.1109/IAS.1999.800003
