Design procedure of specific conductivity of the magnetic circuit of switched reluctance machines

Abstract

Background: In recent years, much attention has been paid to brushless electric machines, which have a long service life and do not require maintenance in operation. Switched reluctance machines, in particular inductor alternators, are widely used due to their design simplicity and high reliability. This paper discusses salient pole type switched reluctance motors with a star-shaped rotor and presents the design procedure of a magnetic circuit as well. The proposed approach enhances the accuracy of modeling electromagnetic energy conversion processes and can also be applied in the design and optimization of switched reluctance generators for both transportation systems and stationary power installations.

Aim: To present design procedure of the magnetic circuit of salient pole type switched reluctance machines.

Methods: The design procedure of specific conductivities in the air gap and the groove area using the method of variable separation into a Fourier series.

Results: A review of salient pole type switched reluctance machines with various magnetic systems and design is carried out. The advantages and disadvantages of the magnetic circuit of switched reluctance machines are determined and the most optimal design of the star-shaped rotor is selected, which ensures maximum material utilization.

Conclusion: The design procedure of the magnetic field of a switched reluctance machine by means of determining the specific conductivities in air gap with the method of variable separation into a Fourier series is presented.

Keywords

switched reluctance machine / specific magnetic conductivity / permanent magnets / air gap

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