Development of the axial gap type motor/generator for the flywheel with superconducting magnetic bearings
| Autor: | Shigeo Nagaya, Naoji Kashima, Y. Kakiuchi, Hiroshi Kawashima, A. Hoshino, Shinichi Isobe |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Bearing (mechanical)
Materials science Rotor (electric) Energy Engineering and Power Technology Magnetic bearing Mechanical engineering Condensed Matter Physics Motor–generator Flywheel Electronic Optical and Magnetic Materials law.invention Electromagnetic coil law Eddy current Electrical and Electronic Engineering Excitation |
| Zdroj: | Physica C: Superconductivity. :764-768 |
| ISSN: | 0921-4534 |
| DOI: | 10.1016/s0921-4534(03)01009-8 |
| Popis: | Flywheel with superconducting magnetic bearings requires the characteristics for the motor/generator such as lower loss, higher efficiency, lower bearing load and more displacement tolerance of the radial directions. We developed an extremely flat shape axial gap type motor/generator which consists of a rotor with permanent magnets and slotless windings to satisfy these characteristics. We introduced the system for adjusting intensity of the excitation to decrease the eddy current loss during the storage and to get the controllability of electromotive force for variable speed operation during charging and discharging. We manufactured the motor/generator of output power 17 kW at 10,000 rpm. It was tested to perform the fundamental functions of motor and generator at partial speeds up to 4000 rpm. |
| Databáze: | OpenAIRE |
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