Motor/generator with multiple rotors
US6211597A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1999 |
| Grant date | Apr 3, 2001 |
| Priority date | — |
| Expiry date | Mar 25, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K51/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Two rotors (3,4) and one stator (2) are arranged coaxially. A common coil unit (6) for individually driving two rotors (3, 4) is provided in a stator (2), and a composite current of an alternating current for driving the first rotor (3) and an alternating current for driving the second rotor (4) is supplied to coil units (6). First salient poles (7B, 7C, 21C, 21D, 21E) facing the first rotor (3), and second salient poles (7D, 21F) facing the second rotor (4), are provided. By setting the number of these salient poles equal to the magnetic pole number ratio of the first rotor (3) and second rotor (4), the number of salient poles is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.