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The electric vehicles need high efficient torque control system. Therefore, this paper proposes the novel excitation interval control method. The excitation intervals are concentrated around the rotor position where the derivative of inductance becomes maximum values. The efficiency of proposed method is superior to the efficiency of conventional methods.
This paper presents the modeling, simulation, and control of Switched Reluctance Motor (SRM) for high-speed applications. The model of SRM is built with help of three-dimensional relationship between excitation currents, rotor position and flux linkage. The relationship makes electromagnetic torque depends not only on the excitation currents but also on the rotor position. Therefore, it is difficult...
Optimum design of switched reluctance motor (SRM) and it control circuits require a knowledge of its parameters, Such as inductance, flux linkage and Torque. In this paper, a model of SRM has been developed and analysed with ANSYS Workbench. The variation of Inductance, flux density and directional force with respect to rotor position for two different stator pole shapes has been analysed. It is observed...
The purpose of the paper is to point out an approach that ensures a mathematical description of different switched reluctance motors (SRM) with central geometrical symmetry of active poles, such as SRM6-4, SRM8-6, SRM12-8 etc. The SRM becomes popular nowadays because of the rapid development of control electronics and simulation facilities. In order to build up a proper SRM drive, it is necessary...
This paper presents a comprehensive sensorless method for controlling a 3 phase, 6/4 SRM with complete isolation. In this method the rotor position is achieved by processing the current results of injected high frequency diagnostic pulses to the motor windings. By finding the suitable pulse width at the beginning of the control algorithm and comparing the results, there is no need to consider any...
This paper presents a new and novel method which is designed to detect the rotor position at standstill and also at low speeds in switched reluctance motor. In this method a small capacitor is connected in series with the motor winding for sampling the voltage rise during the detection period. The supply voltage in conjunction with the drive transistor produces short pulses for this series connection...
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