Abstract
In a design of a switched reluctance machine, there are a number of parameters that are chosen empirically inside a certain interval, therefore to find an optimum geometry it is necessary to determine how each parameter acts on the performance of the machine. This work presents a study on the influence of geometric dimensions on the performance of the switched reluctance machine. The analysis is done through finite element simulations based on the variation of one parameter while the others are fixed. Graphical and numerical results of torque and magnetic flux are presented for a 6/4 three-phase machine and an 8/6 four-phase machine. The study presented aims to provide consistent data on which dimensions should be modified for specific applications, and thus to base choices made in the design and optimization stage.
Highlights
A switched reluctance machine (SRM) is a doubly salient electrical machine that cannot operate without power electronic switches
We present a novel perspective of evaluating the performance of SRM through constructing and analyzing performance graphs, which help the designer to understand which geometric dimensions should be modified for specific applications
This work presented in detail the SRM design procedures, indicating the intervals of choice of dimensions and how this choice is often made subjectively and empirically
Summary
A switched reluctance machine (SRM) is a doubly salient electrical machine that cannot operate without power electronic switches. The main disadvantages are the high torque ripple that is inherent in SRM and can cause high vibration rates and acoustic noises; the need for a rotor position sensor; and high friction losses for high speeds. Most of these drawbacks can be reduced by proper design, improved geometry and control methods. SRM’s ability to work with variable speeds, together with the low cost and reliability of SRM, has made this a promising replacement for the induction machine for application in wind power generation.
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