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العنوان
Experimental & analytical investigation of self-excited induction generator operating in balances & unbalanced modes/
الناشر
Raafat Farag Sidhom,
المؤلف
Sidhom,Raafat Farag
هيئة الاعداد
باحث / رأفت فرج سيدهم
مشرف / عادل لطفى محمدين
مشرف / محمود أحمد جمال
مناقش / على كامل الخراشى
مناقش / محمد عبد الله الخازندار
الموضوع
Electric generator
تاريخ النشر
1998 .
عدد الصفحات
82 P.:
اللغة
الإنجليزية
الدرجة
ماجستير
التخصص
الهندسة (متفرقات)
تاريخ الإجازة
1/1/1998
مكان الإجازة
جامعة الاسكندريه - كلية الهندسة - الهندسة الكهربائية
الفهرس
Only 14 pages are availabe for public view

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Abstract

‎During the last recent ‎of research projects focused on ‎the use and development of new systems utilizing alternative sources of energy. The work covered the use of induction machine in general and squirrel cage induction machine in particular, to act as a generator for such applications, depending upon the nature of prime-mover (constant speed or variable speed) operated from various renewable energy sources such as wind, small hydro heads, bio-gas ... etc. ,in isolated and remote locations.
‎ Due to its reduced unit cost, brushless rotor construction, absence
‎ separate source for excitation, ruggedness, ease of maintenance and self
‎protection against severe overloads and short circuits, a self-excited induction generators (SEIG) has emerged as a suitable candidate of isolated power source
‎This thesis presents an experimental and analytical investigation operating
‎transient operation
‎in balanced and unbalanced modes. It surveys the steady
‎analysis of stand-alone self-excited induction generator, in balanced mode, including the description of the theory of self-excitation
‎ evaluation for the performance. It focuses on studying
‎ characteristics of unbalanced SEIG under transient operations
‎a complete performance the following
‎cases :
‎* when two phase capacitors are disconnected (case one). * when one line is opened (case two).
‎ * when two phases are short-drcuited (case three).
‎* when unbalanced excitation capacitor bank are connected across the stator winding of the SEIG (case four).
‎It has been noted that the machine can build-up the voltage for all cases
‎ except case three (two phases are short-circuited) since the capacitor
‎equal zero, and there will be no self-excitation for this case.
‎The experimental results are very close to the digital computer simulation
‎which shows the validity of the proposed techniques.