An analytical approach for determination of optimal stator/rotor saliency number of a swıtched reluctance motor

Download

index.pdf

Date

2020

Author

Kılınç, Cem Erkan

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

265
views

111
downloads

The purpose of this study is to seek the optimal stator and rotor saliency number of a switched reluctance motor (SRM) for hybrid electrical vehicle (HEV) applications. For this purpose, first a previously developed SRM analysis software is investigated to identify possible errors in implementation of both the theory and the coding. Performance prediction method is based on the use of normalized force and permeance data produced via numerical field solution, and a polynomial based interpolation is introduced in the software. This approach is shown to produce accurate results through the comparison of predicted and measured results for the torque-position-current and flux linkage-current-position characteristics. A detailed user interface has been developed for simulations. Once the study on the software is completed, its performance prediction (such as static torque-position, flux linkage-current, average torque, etc.) accuracy is tested through the comparison of the simulation results and measurements of two different SRMs, which are found to be in good agreement. Finally, this software is embedded in an optimization procedure based on genetic algorithm to seek the optimal stator (Ns) and rotor (Nr) saliency numbers. The objective function of the optimization is defined as the maximum average torque attainable within specified dimensions. Optimization is done for different allowable pole combinations. Obtained results indicate that increasing Ns/Nr ratio above 18/12 does not yield any torque density improvement for the specified problem. It is also found that about 10 percent improvement in torque density is possible over the motor currently used in this HEV application.

Subject Keywords

Reluctance motors, Switched Reluctance Motor, Performance Calculation, Design Optimization, Pole Combination.

URI

http://etd.lib.metu.edu.tr/upload/12625346/index.pdf
https://hdl.handle.net/11511/45563

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Prediction of torque and inductance displacement characteristics of asymmetrically slotted variable-reluctance motors using a simplified model for numerical field solution Ertan, Hulusi Bülent (1999-09-01) For prediction of static and dynamic performance of doubly-salient motors, it is essential to know their flux linkage-position-excitation characteristics and also the static torque characteristics. At the design stage determination of these characteristics presents difficulties because of highly nonlinear behavior of the magnetic circuit. It is possible to use numerical field solution of the complete motor to obtain this information. This, however, requires expertise on a professional program and may be exp...
A Novel Noise Reduction Technology for Switched Reluctance Motors Bizkevelci, Erdal; Özlü Ertan, Hatice Gülçin; Leblebicioğlu, Mehmet Kemal (2008-07-24) The conditions are sought at which an SIR motor can be operated with highest efficiency, while producing a desired torque output at low shaft torque ripple. The investigation is based on the simulation software that uses measured flux-linkage (V, 0, 1) and static torque (T, 0, 1) characteristics of a given motor. The variation of the shaft torque, torque ripple and efficiency of the motor Is investigated, while the control variables "advance angle" and "conduction angle" are swept over their range with a co...
An Analytical Approach for the Calculation of Flux-Linkage Including End-Effect for SR Motors Özlü Ertan, Hatice Gülçin (2008-06-13) The accuracy of flux linkage-current-position curves has vital importance for designing SR motors. Analytical prediction of these curves is very difficult and as shown in this paper 2D approach leads to erroneous prediction of the flux linkage curves and hence significant errors in performance prediction of SR motors. This paper makes an important contribution to the design process by developing an approach for the analytical calculation of flux linkage-current-position curves including the end effect. As s...
Design of a GaN Based Integrated Modular Motor Drive Uğur, Mesut; Keysan, Ozan (2018-10-25) In this study, design procedure of an Integrated Modular Motor Drive (IMMD) is presented focusing on high power density. The design is based on a permanent magnet synchronous motor (PMSM) and GaN FETs. Fractional slot concentrated windings are used on the stator. Slot/pole combination and winding configuration is selected based on having low cogging torque and high winding factor. An extended motor drive inverter topology is proposed where 2-level voltage source inverters are connected both in series and pa...
New Modified C-dump Drivers With PI Capacitor Bridge for Switched Reluctance Motor Najmi, V.; Siadatan, A.; Afjei, E.; Afjei, M. S. (2011-09-10) Switched Reluctance Motors (SRM) are known as uncomplicated structure machines, have some characteristics which make them remarkable for high speed low voltage applications. Due to have full utilization of SRNI performance, attain to efficient drive circuit for this kind of motors is desirable. In this paper, a new class of modified C-dump drivers with PI Capacitor Bridge for switched reluctance motors is proposed. This new drive circuits take the advantage of having faster rate of energy discharge from eac...

Citation Formats

C. E. Kılınç, “An analytical approach for determination of optimal stator/rotor saliency number of a swıtched reluctance motor,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Electrical and Electronics Engineering., Middle East Technical University, 2020.