الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Switched Reluctance Motors (SRMs) are gaining wider popularity among variable speed drives. This is due to their simple low-cost construction characterized by an absence of magnets or rotor winding, high performance level over wide speeds range, and fault tolerant power stage design. The now availability and the moderate cost of the necessary electronic components make SR drives a competitive alternative to other commonly used motors like AC, BLOC, PM synchronous or universal motors for numerous applications.
As win be seen in this thesis, the SRM requires position feedback for motor phase commutation. This requirement is addressed by using position sensors like encoders. The result is that the implementation of mechanical sensors increases the costs and decreases the system reliability. Traditionally, developers of motion control products have attempted to lower system costs by reducing the number of sensors.
Sensorless operation is crucial to the successful commercial SRM drives. A large number of sensorless control schemes have been under development over the last 19 years. It the timely, to have a thesis that classify and summarize the important schemes among sensorless techniques for future research, development and applications.
A variety of algorithms for sensorless control have been developed, most of which involve evaluation of the variation of magnetic circuit parameters that are dependent on the rotor position. With improvements in power electronics and microprocessors, this trend win continue to grow.
The goal of the thesis is to underline fundamental sensorless methods in SRM and practical implementation for one of those methods. This thesis presents the practical implementation of sensorless SRM related to the flux-linkage/current. method and illustrates the features of the control techniques methods used in this field.
A comparison of motor performance, with and without sensor, is performed with simulation using Matlab-Simuiink package and p