Auxiliary output voltage control implemented with a bi-directionally magnetizing magnetic amplifier
US6490184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2001 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/33561
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses forward power converter. The power converter includes a transformer for transferring an input voltage from a primary side to a secondary side. The secondary side includes a main output voltage loop and at least one auxiliary output loop connected with a magnetic amplifier. A pulse width modulation (PWM) controller controls a switch on the primary side of the transformer for turning on the switch and turning off the main output voltage loop and the auxiliary output voltage loop for storing a magnetizing energy on windings of the secondary side. The magnetic amplifier includes a first and a second magnetization windings controlled by a first and a second control circuits respectively for providing a positive and negative magnetization current to carrying out a bi-directional magnetization process to achieve expanded load range operable for the forward power converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.