Numerical and experimental comparison of electromechanical properties and efficiency of HTS and ferromagnetic hysteresis motors

D. Inácio, S. Inácio, J. Pina, A. Gonçalves, M. Ventim Neves, A. Leão Rodrigues

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Hysteresis motors are very attractive in a wide range of fractional power applications, due to its torque-speed characteristics and simplicity of construction. This motor's performance is expected to improve when HTS rotors are used, and in fact, hysteresis motors have shown to be probably the most viable electrical machines using HTS materials. While these motors, either conventional or HTS, are both hysteresis motors, they base their operation on different physical phenomena: hysteretic behaviour in conventional ferromagnetic materials is due to the material's non-linear magnetic properties, while in HTS materials the hysteresis has an ohmic nature and is related with vortices' dynamics. In this paper, theoretical aspects of both conventional and HTS hysteresis motors are discussed, its operation principles are highlighted, and the characteristics of both motors are presented. The characteristics, obtained both by experimental tests and numerical simulation (made with commercial software), are compared, in order to evaluate not only the motor's electromechanical performances but also the overall systems efficiency, including cryogenics for the HTS device.

Original languageEnglish
Article number012218
JournalJournal Of Physics: Conference Series
Volume97
Issue number1
DOIs
Publication statusPublished - 1 Feb 2008

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