Active filter and AC-DC conversion device
US10110113B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2015 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Sep 29, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An active filter is connected in parallel to a rectifier circuit between a set of AC input lines and a pair of DC buses. The active filter includes a capacitor, a pair of current limiting elements and an inverter. One in the current limiting elements is disposed between one end of the capacitor and one in the DC buses. Other in the current limiting elements is disposed between other end of the capacitor and other in the DC buses. At least one of the current limiting elements is disposed in an orientation to be forward with respect to a DC voltage outputted by the rectifier circuit. The inverter includes: a set of AC-side terminals connected to the set of AC input lines; and a pair of DC-side terminals connected to both ends of the capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.