Active power filter
US7787267B2 · kind B2 · utility
7Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Jun 30, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An active power filter includes an energy storage capacitor, an inverter, a filtering circuit and a controller. The inverter is controlled to act as a virtual resister at a fundamental frequency for compensating for the power loss of the active power filter, to act as a virtual capacitor at a fundamental frequency for compensating for a fundamental reactive power of the load, and/or to generate a harmonic current for suppressing the harmonic currents of specific orders of the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.