Excitation arrangement for a long stator drive
US4636667A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Jan 31, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/09
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An excitation arrangement for a long stator drive for rapid transit systems has combined generation of propulsive and portative forces. The arrangement comprises at least one heteropolar magnet which has a plurality of channels extending at right angles relative to the direction of the long stator, the channels being open at their pole plane lying opposite the long stator and magnetic coils are located in the channel. The channels have a rectangular cross section extending up to the pole plane and the conductors of the magnetic coils are wound in tight contact with one another and with the channel walls on the side of the poles. The magnet comprises at least one recess extending parallel to the channels beneath the pole plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.