بحث بعنوان Effects of Different Control Parameters on The Average Characteristics of Switched Reluctance Motor

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Effects of Different Control Parameters on The Average Characteristics of Switched Reluctance Motor
Mahmoud M. Elkholy
Electrical Power and Machines Department, Faculty of Engineering, Zagazig University
Zagazig, Egypt
melkholy71@yahoo.com
Hamid M. Elshwey
Electrical Power and Machines Department, Faculty of Engineering, Zagazig University
Zagazig, Egypt
Afaf F. Abdel-kader
Electrical Power and Machines Department, Faculty of Engineering, Zagazig University
Zagazig, Egypt

و المحتوى كما يلي :

Abstract:
This paper is to study the effects of voltage variation, advancing the switching ON angle, Early switching OFF
angle, and Freewheeling resistance on the average characteristics of switched reluctance motor over a wide
range of speeds from starting to high speed. The mathematical equations necessary to calculate the average
motor performance are developed. The experimental machine in this paper is composed of stator, which is 36
slots, divided into six cylindrical poles. The rotor has two salient poles without any winding.
Keywords: Switched reluctance motor, voltage control, advancing switching ON angle, early switching
OFF angle and freewheeling resistance
Conclusions
From this paper, it can be concluded that:
1. Applied voltage increasing leads to increase motor currents and motor torque. But the negative torque is not
converted into positive torque. So, applied voltage increasing can not increase maximum no-load speed.
2. At any constant speed, varying the voltage is not led to vary the motor efficiency.
3. At any constant speed, increasing the advance angle  leads to increase the motor efficiency
4. Increasing the advance angle  can increase maximum no-load speed.
5. Increasing the early switching off angle  is led to decrease the phase current and negative torque
6. At low speeds, it is not preferred to early switch off phases, in order to produce high motor torque.
7. Increasing the freewheeling circuit resistance is led to decrease average value of phase current and motor
losses and is led to increase motor torque, efficiency and maximum no- load speed.

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