Switching converter with improved power density
US10177685B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2016 |
| Grant date | Jan 8, 2019 |
| Priority date | — |
| Expiry date | Dec 23, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed examples include switching power converters, control methods and ripple filter circuits in which first and second switches are connected in series across first and second DC bus nodes, with an inductor connected to a switching node joining the first and second switches and a storage capacitor between the inductor and the second DC bus node. A control circuit operates the switches to alternately transfer ripple energy from a DC bus capacitor of the DC bus circuit through the inductor to the storage capacitor, and then to transfer ripple energy from the storage capacitor through the inductor to the DC bus capacitor to regulate the ripple voltage of the DC bus circuit, and the control circuit provides hysteretic control of the absolute value of the inductor current between a first value and a higher second value during transfer of ripple energy between the DC bus capacitor and the storage capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.