Electronic power supply circuit for a series connected DC motor
US4275341A · kind A · utility
14Cited by
5References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1979 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Dec 19, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/72
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The circuit effects a changeover from the traction configuration to the braking configuration or vice-versa in less than one millisecond. It includes the field winding (3) of the motor (1) disposed between a traction thyristor (12) and a main chopper (13) followed by a traction diode (14) and the armature of the motor, the field winding being in parallel with a free-wheeling diode (D5) and a shunt thyristor (THS).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.