Drive of rotary electric machine
US6867560B2 · kind B2 · utility
9Cited by
21References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2003 |
| Grant date | Mar 15, 2005 |
| Priority date | — |
| Expiry date | Apr 7, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotary electric machine having a plurality of rotors is driven by a compound current. A voltage to be applied to a stator of the rotary electric machine is in the form of a compound rectangular or stepwise voltage composed of a plurality of superposed components each of which is a rectangular or stepwise wave having a frequency corresponding to the revolution speed of a unique one of the rotors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.