Dynamic braking in controlled current motor drive systems
US4039914A · kind A · utility
53Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1975 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Nov 25, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P3/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current source power converter for an electric motor is comprised by a combined controlled rectifier and chopper which is coupled to a controlled-current inverter by a dc reactor. In the motoring mode the combined rectifier and chopper functions as a phase controlled rectifier to control the current magnitude. In the dynamic braking mode a line switch is opened and a braking resistor placed across the rectifier output, and the combined rectifier and chopper is operated as a chopper to control the average voltage across the braking resistor and thus the current magnitude during braking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.