الفهرس 
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Abstract
The increasing number of the conventional internal combustion engine vehicles, which are used daily in human transportation, causes a huge amount of air pollution due to gases exhaust. They increase the required quantities of earth`s petroleum resources which are limited. So, many researches tried to solve this problem in different ways. The most environmental friendly way is by using the electric vehicles excluding its drawbacks such as its high cost and low driving range.
On the other hand, hybrid electric vehicles have along driving range, good performance, and very low emissions. These advantages make the hybrid electric vehicles the most attractive vehicles nowadays.
This thesis introduces a survey on the electric vehicles and the hybrid electric vehicles . also, it gives an overview of the electrical drives which are used in the parallel hybrid electric vehicle parallel HEV, the induction motor IM and suitable control methods have been chosen.
The electrical propulsion system is modeled and simulated for different roads. Three types of pulse width modulation PWM technique namely, sinusoidal pulse width modulation SPWM, conventional space vector pulse width modulation conventional SVPWM, and carrier-based SVPMW are used and their results are compared in terms of total harmonic distortion THD, DC voltage utilization, transient behavior, and the execution time for each technique.
The intelligent fuzzy logic control is applied on the electric propulsion of the parallel HEV to improve the dynamic performance of the vehicle. Also, the parallel HEV system is modeled and simulated under different driving cycles.
The control algorithm is based on the driving cycle, and in all the driving cycles the vehicle is driven at starting by the IM, and the ICE is used mainly in the urban-areas to reduce the emissions in these areas. The hybrid operation is also considered in some parts of the driving cycles.
The SIMPLEV software program is used to study the vehicle emissions in the different driving cycles to ensure that the control algorithm used decreases the vehicle emission in the urban areas.
An experimental setup is established for the heart of the hybrid electric vehicle, which is the electric propulsion system. This system contains the induction motor, the three-phase voltage-source inverter which contains six IGBT`s power semiconductor switches, the power supply circuit which contains four power supplies to supply the isolating circuit and the drive circuit.
Furthermore, a mathematical simplified equation for the fuzzy logic controller FLC is deduced from the simulation results to reduce the size of the software program used in the experimental work.