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The switched reluctance motor is a good candidate for electrical traction and more specifically in automotive applications. The conventional switched reluctance motor presents two major drawbacks which are torque ripple and stator vibrations. In this work, a solution to limit these problems is proposed: a switched reluctance motor with magnetic slot wedges is used to reduce the impact of vibrations...
This paper deals with current control in switched reluctance motors with an objective of maximizing torque generation. First, the structure of a hybrid controller is recalled. This controller, which is a combination of an on-off and a PI controller, is efficient for controlling SRMs using square wave current pulses. Next, advantages and drawbacks of this controller with high current dynamics are detailed...
This paper presents an effective digital speed control implementation for a switched reluctance machine. An optimized architecture is proposed based on a hardware/software partitioning in order to implement it on a System on Programmable Chip. This solution leads to a user-friendly development solution without over pending for performance or sacrificing features. Finally, the proposed strategy achieves...
The purpose of this paper is to compare two different techniques to adjust the reference torque in a speed control loop for variable speed control of switched reluctance machine. The first technique is "instantaneous", i.e., the torque is instantaneously regulated to fit the reference by modulating the current profile with respect to rotor position using the electromagnetic torque characteristics...
Switched reluctance motor drives are under consideration in various applications requiring high performance applications such as in servomotor drives, electric vehicle propulsion and jet engine starter-generators. Current or torque control constitutes the heart of control in such drive systems to obtain the desired high bandwidth in torque and speed responses. The nonlinear characteristics due to...
Nowadays, the switched reluctance machine has become a serious candidate in industry applications : hybrid electric vehicles, aircraft starter/generator systems and washing machines. Because of the rapid progress in processors (DSP), control algorithms are becoming more and more promising. Nevertheless an accurate model is essential, first to predict its performance and obtain high quality control,...
In the motor control industry, DSP systems offer major improvements over analog designs, enabling notably to replace speed or position sensors by the implementation of sensorless control algorithms. In this paper, we propose a new viable method which estimates the rotor position and velocity of a switched reluctance machine from the rotor saliencies present in the current signal. This approach is...
In this paper a fuzzy logic, rule based control strategy is proposed for a parallel hybrid electric vehicle (HEV). The strategy controls the amount of energy flow among components in order to satisfy the driver demand, optimize energy consumption and reduce polluting emissions. After modelling powertrain components, the strategy is tested by simulation with three speed cycles. An improvement of the...
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