Electrical vehicle controller with programmed motor current
US4217527A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1978 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Sep 19, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P7/298
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable duty cycle power converter operable in a current controlled loop and having means for delivering increased load current at low duty cycles for efficient use of the switching elements in the converter. A current limit is established for maximum duty cycle which allows current flow through the power switching elements near but within the ratings of the devices. The maximum limit is programmed as a function of duty cycle to allow increased load current flow while maintaining the current through the power switching devices within ratings. As a result substantially increased current can be provided at low duty cycles without the need for using power switching devices of increased rating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.