Power supply and method for controlling a power supply
US10355597B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2015 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Apr 28, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply having a transformer, a magnetizing current regulation circuit, and a device for controlling the regulation circuit intended to switch the regulation circuit alternately from the magnetizing state to the demagnetizing state is disclosed. The control device is intended to prolong the magnetization phase for a magnetization time (TF). The power supply also includes an output capacitor connected to a secondary of the transformer so as to form a resonant circuit with the leakage inductor, the voltage between the terminals of the output capacitor corresponding to the output voltage (VS) of the power supply. The magnetization time (TF) and the value of the output capacitor are such that, on the resonance portion of the magnetization phase, the output voltage (VS) describes a sine wave portion and, starting from an initial value (VS0) below the median value of the sine wave, passes through said median value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.