Analysis of a Shaftless Semi-Hard Magnetic Material Flywheel on Radial Hysteresis Self-Bearing Drives
| Autor: | Angelo Bonfitto, Andrea Tonoli, Salvatore Circosta, Patrick Keogh, Nicola Amati, Christopher Lusty |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Flywheel energy storage
0209 industrial biotechnology Control and Optimization Materials science magnetic suspension Jiles–Atherton model semi-hard magnetic materials Mechanical engineering 02 engineering and technology Flywheel law.invention 020901 industrial engineering & automation law lcsh:TK1001-1841 0202 electrical engineering electronic engineering information engineering Jiles-Atherton model lcsh:TA401-492 flywheel energy storage systems Electromagnet Rotor (electric) 020208 electrical & electronic engineering Electromagnetic suspension Magnetic hysteresis lcsh:Production of electric energy or power. Powerplants. Central stations Control and Systems Engineering Magnet lcsh:Materials of engineering and construction. Mechanics of materials |
| Zdroj: | Actuators Volume 7 Issue 4 Actuators, Vol 7, Iss 4, p 87 (2018) |
| ISSN: | 2076-0825 |
| DOI: | 10.3390/act7040087 |
| Popis: | Flywheel Energy Storage Systems are interesting solutions for energy storage, featuring advantageous characteristics when compared to other technologies. This has motivated research effort focusing mainly on cost aspects, system reliability and energy density improvement. In this context, a novel shaftless outer-rotor layout is proposed. It features a semi-hard magnetic FeCrCo 48/5 rotor coupled with two bearingless hysteresis drives. The novelty lies in the use of the semi-hard magnetic material, lending the proposed layout advantageous features thanks to its elevated mechanical strength and magnetic properties that enable the use of bearingless hysteresis drives. The paper presents a study of the proposed layout and an assessment of its energetic features. It also focuses on the modeling of the radial magnetic suspension, where the electromagnets providing the levitating forces are modeled through a one-dimensional approach. The Jiles&ndash Atherton model is used to describe the magnetic hysteresis of the rotor material. The proposed flywheel features a mass of 61.2 kg, a storage capability of 600 Wh at the maximum speed of 18,000 rpm and achieves an energy density of 9.8 Wh/kg. The performance of the magnetic suspension is demonstrated to be satisfactory and the influence of the hysteresis of the rotor material is highlighted. |
| Databáze: | OpenAIRE |
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