Active filter device
US6320392A · kind A · utility
5Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 13, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Sep 13, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An active filter device provided for compensating harmonic distortion in a supply line by injecting for each harmonic (f.sub.k) to be considered a compensation current. The compensation current being determined by injecting a monitoring current on the supply line at a first (f1) and second (f2) frequency value, offset respectively on either side of the considered harmonic, and measuring response currents generated by the supply line upon injection of said monitoring currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.