Abstract
This study was devoted, in its first part, to the configuration and the modelling of the Imbricate Discs Variable Reluctance Machine (IDVRM), which was simplified with the assumption of stator structure alike to that of the synchronous machine, leading to the possibility of using the PARK's transformation. Then, a vector control strategy, which maintains a constant saturation level in the machine, was set-up. This strategy, which consists in keeping the stator direct current at a constant value, allowed the linearization of the machine model and the control was chose in the same way as a DC machine. A simulation by Matlab/Simulink of the IDVRM, fed by PWM inverter, showed the simplicity and the effectiveness of the proposed control strategy for this type of machine.
Highlights
In this study, the machine dealt with is a variable reluctance machine with imbricates discs.This kind of machine is commonly called Machines with Synchronous Reluctance.it is a synchronous machine with projecting poles which has trapezoidal magnetic core instead of field windings
The imbricate discs variable reluctance machine was modelled in unsaturated mode, in which the stator construction taken identical to that of the three-phase synchronous machine
The simulated machine is supplied by a pulsed width modulation (PWM) inverter, using the chopping frequency in the order of 5 kHz, governed by the adopted control strategy
Summary
The machine dealt with is a variable reluctance machine with imbricates discs. The advantage of the variable reluctance machine, where a high mass-torque is required (in particular at low speeds), without lowering the efficiency of the machine, are generally fed by the industrial network which imposes a sinusoidal voltage, or by inverters which deliver a square wave voltage, or current, or even by a chopper with or without modulation of impulse[2]. This kind of machine is a subject of various studies, concerning their designs[1-4], the optimization of their controllers, in variable speeds[5-7]. By using Matlab/Simulink, the simulation of the IDVRM, fed by Pulsed Width Modulation (PWM) inverter, the simplicity and the effectiveness of the proposed control strategy is proved and discussed
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