Coreless rotating electrical machine for being operated under load exceeding rating, driving method thereof, and driving system including thereof
US11563361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2022 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Jan 26, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2201/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A coreless rotating electrical machine for being operated continuously comprises a stator including an energizable coreless cylindrical coil and a lid-type mount; and a rotor including a cup-type mount. The lid-type mount is equipped with a channel for supplying a refrigerant liquid to the air gap. The coreless rotating electrical machine is operated continuously by supplying the refrigerant liquid into the air gap, allowing the cylindrical coil, which generates heat, to vaporize the refrigerant liquid, cooling the cylindrical coil by latent heat of vaporization, and repeating an operation of supplying the refrigerant liquid to prevent a temperature of the cylindrical coil exceeding an allowable maximum temperature, and an operation of adjusting the supply of the refrigerant liquid to prevent the temperature of the cylindrical coil falling below a minimum temperature, so as to maintain the temperature in a range between the allowable maximum and minimum temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.