MODEL OF THE SWITCHED RELUCTANCE MOTOR WITH SENSORLESS CONTROL

摘要

A mathematical model based on partial differential equations allows studying the behaviour of a switched reluctance motor in various operational modes. Lookup tables containing measured values were used to express non-linear functions of phase currents and torques. Though a position sensor on the shaft is usual for correct switching the closed loop control, a sensorless control may be applied in some cases. Here the position identification was realised by an additional 2 kHz signal, while the initial rotor angle was determined by a short voltage pulse. Time responses of main quantities were gained by simulation via the MATLAB programme.