Fuzzy logic based exact sensor less speed control of induction motor at low range of operations

مقدم أطروحة جامعية

al-Batran, Abd al-Fattah

مشرف أطروحة جامعية

Abu al-Rubb, Haytham

الجامعة

جامعة بيرزيت

الكلية

كلية الهندسة و التكنولوجيا

القسم الأكاديمي

دائرة علم الحاسوب

دولة الجامعة

فلسطين (الضفة الغربية)

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2004

الملخص الإنجليزي

In this thesis, the field orientation control, which is the most popular control algorithm of induction motor, beside the fuzzy logic controller to compensate the speed is used.

One of the most important reasons of spreading the use of the fuzzy logic is that the structure of the fuzzy logic is very similar to the human way of thinking.

Accordingly, some of the technological problems can be solved easier.

Therefore, this method is used in the proposed control algorithm.

Controlled induction motor drives without mechanical speed sensors at the motor shaft have the attractions of low cost and high reliability.

To replace the sensor the information on the rotor speed is extracted from measured stator voltages and currents at the motor terminals.

Vector-controlled drives require estimating the magnitude and spatial orientation of the fundamental magnetic flux waves in the stator or in the rotor.

Durenberger state observer is used for this purpose.

Very low errors between the estimated and real rotor angular velocity in steady states and transients have been observed for values very close or equal to zero.

The used motor is fed by voltage source inverter with hysteresis current controllers.

Properties of the control system with the speed observer have been investigated and results of simulations are presented, for extremely low speeds operation under different load conditions.

التخصصات الرئيسية

الهندسة الميكانيكية
تكنولوجيا المعلومات وعلم الحاسوب

الموضوعات

• الحوسبة
• المنطق الضبابي

عدد الصفحات

107

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-303453