الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
A new modified cosine approach representing the variation of SRM inductance w.r.t rotor
position has been introduced. A comparison between simulated results and published
measured results of a commercially available switching drive system has been made. Effect
of motor phase failure during operation has been studied.
Nowadays, switched reluctance motors (SRMs) attract more and more attention. The
switched reluctance motor is simple to construct. It not only features a salient pole stator
with concentrated coils, which allows earlier winding and shorter end turns than other types
of motors, but also features a salient pole rotor, which has no conductors or magnets and is
thus the simplest of all electric machine rotors. Simplicity makes the SRM inexpensive and
reliable, and together with its high speed capacity and high torque to inertia ratio, makes it
a superior choice in different applications.
However, the control of the SRM is not an easy task. The motor’s double salient structure
makes its magnetic characteristics highly nonlinear. The motor flux linkage appears to be a
nonlinear function of stator currents as well as rotor position, as does the generated electric
torque. Apart from the complexity of the model, the SRM should be operated in a
continuous phase-to-phase switching mode for proper motor control. The torque ripple and
noise as a result of this commutation are the other two awkward issues which have to be
tackled. All these make the control of the SRM a tough challenging.
This report attempts to investigate the dynam ic and steady state response and properties of
the SRM from the motor’s structure properties, model equations, operation principle, power
converter topology and control strategies.
Apart from the report, focuses on dynamic simulation of an 8/6 SRM based on a simplified
model. This simplified model completely limits the operation of the motor into its linear
flux region. The report presents an investigation into the transient behavior as well as the
steady-state performance of singly excited doubly salient reluctance machine energized
from a unipolar non-bifilar drive circuit. The effect of operating mode and the switching
angles on the dynamic and steady state response have been studied using simple linear
model.