Search In this Thesis
   Search In this Thesis  
العنوان
Characteristics Improvement Of Switched Reluctance Generator \
المؤلف
Abd El-Kader, Afaf Fathy El-Said.
هيئة الاعداد
باحث / Afaf Fathy El-Said Abdel-Kader
مشرف / Fahmy M. M. El-Khouly
مناقش / Fahmy M. M. El-Khouly
مناقش / Hamid Mohamed Bahy Metwally
الموضوع
Reluctance Motors. Reluctance Motors - Automatic Control. Electric Motors - Electronic Control. Electronic Control.
تاريخ النشر
2012.
عدد الصفحات
157 p. :
اللغة
الإنجليزية
الدرجة
الدكتوراه
التخصص
الهندسة
تاريخ الإجازة
5/8/2012
مكان الإجازة
جامعة المنوفية - كلية الهندسة - Electrical Engineering Department
الفهرس
Only 14 pages are availabe for public view

from 156

from 156

Abstract

Switched reluctance generators have been identified as a potential option for military aircraft, variable speed wind turbine and automotive electric power systems. Switched reluctance generator has various desirable features which include simple and solid structure, easiness of maintenance, small moment of rotor inertia and low cost. Switched reluctance generator is characterized by the automatically excitation current decreasing with speed increasing. The load voltage (for constant load resistance) is nearly constant through a very wide range of speed. This is the main advantage of this generator type. There for, this generator is suitable to work with the equipment of wide speed variation. Such as the types of vehicles powered by diesel engine and needs to electric generator to run the electric loads. This generator also serves as a motor to start the diesel engine. Then one machine will be used instead of starter motor and generator usable nowadays. In this thesis, detailed characteristics of a 6/2 cylindrical stator switched reluctance generator with experimental verefications are obtained. The results are computed from the transient and average analysis equations. The experimental results are presented to validate the effectiveness. Due to highly nonlinear characteristics of the generator, iterative simulation of the generator model on the range of parameters and control variables has been used. Maximization of switched reluctance generator output power has been addressed in this work. Phase self-inductance, load voltage switching angles, DC excitation voltage level and shaft speed of the generator have been identified as control variables affecting output power. Depending on the application each one can be defined as control variable. The output power is increased with high efficiency, by increasing the excitation voltage. Generator output power is increased by; decreasing the value of switching ON angle (alfa), speed decreasing and excitation voltage increasing. The total input power (excitation and mechanical powers) is decreased to increase the generator efficiency. Input mechanical power variation with speed is nearly constant through wide range of speeds due to the nearly constant load power.