Power converter with controller for switching between primary and battery power sources
US5289046A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1992 |
| Grant date | Feb 22, 1994 |
| Priority date | — |
| Expiry date | Jun 10, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J9/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter, based on a modular architecture, in which a boost power factor correction circuit is provided as an input stage for both a primary power source and a battery power source. This arrangement permits the same power conversion stages which follow the boost power factor correction circuit to be used regardless of whether the primary or battery power source is in use. The power supply includes a controller for monitoring the primary power source voltage and the DC voltage produced at the output of the boost circuit and comparing each to a preselected reference. When a sufficiently large difference appears between each of those voltages and its respective reference, the controller connects the battery power source to the input of the boost circuit and simultaneously disconnects the primary power source therefrom. This switching of power sources is transparent to the load whose input voltage is maintained at a substantially constant level by the boost power factor correction circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.