Analytical Design and Fem Verification of a Novel Three-Phase Seven Layers Switched Reluctance Motor

Abstract

Abstract-The purpose of this paper is to propose analytical and finite element method (FEM) designs of a novel three-phase Seven Layers Switched Reluctance Motor (SLSRM) for the applications which dictated by the performance with the total torque per volume as a key marker indicator. The introduced motor consists of seven magnetically independent stator layers, which each layer includes a set of 4 by 4 stator/rotor poles. In this SLSRM, the three layers are energized together to produce high torque and also decrease the torque ripple in comparison with the one layer conventional SRM. Since each layer has its independent phase in the motor, the isolation problem of coils and cooling troublesome existing in conventional SRMs is solved. In addition, these types of SLSRM have some other advantages, like simpler configuration, cooling in easier way, etc.. Firstly an analytical design is carried out to illustrate the design procedure and then threedimensional (3-D) magneto static simulation analysis of the SLSRM and the one layer SRM is performed using 3-D FEM, to obtain and verify the flux-linkage, flux density and torque profiles. Also, the proposed motor is compared with a conventional one layer SRM with a same size and volume.

Optimal design of permanent magnet linear synchronous motors based on Taguchi method

“…These parameters' variation will affect many performances of PMSLM [6], such as electromagnetic field distribution, no‐load induced electromotive force, harmonic distortion rate, efficiency, thrust and thrust ripple. However, according to the performances requirements of laser machines which mainly influenced by thrust and thrust ripple.…”

“…This method can be surmised as analysis to deduce the objective function of the motor operation performance, then an intelligent algorithm is used to search the extremum of objective function [4,5]. For instance, Siadatan et al [6] proposed an analytical method to optimise a novel three-phase seven-layer switched reluctance motor, with the total torque per volume as a key indicator. Hasanien et al [7] used particle swarm optimisation (PSO) to improve the analytical thrust of the motor.…”

Design, modeling, prototyping, and comparison of a low‐cost, small‐size, and accurate sensorless driver for switched reluctance motor

“…Since power electronic devices and transistors are utilized in the SRM driver, SRM had not been used for many years until the developments in power electronics technology in the past decades . In SRM control, the rotor position is required since the stator pole should be energized in a rotor position where positive torque can be generated to rotate the rotor . Basically, two main strategies are suggested for detecting the rotor position: direct (with position sensor) and indirect (sensorless) strategies .…”

Multi‐objective design optimisation for PMSLM by FITM

“…Analytical method can be interpreted as to deduce the approximate objective function of the motor operation performances, and then optimise objective function by intelligent algorithm. For example, Siadatan et al [15] propose an analytical method to optimise the new kind switched reluctance motor (seven layers switched reluctance motor), with the total torque per volume as a key indicator. Li et al use the equivalent magnetisation method and multiple population genetic algorithm to optimise the air‐cored PMLSM with overlapping windings [1].…”