Electromagnetic interference filter for an autotransformer
US7095636B2 · kind B2 · utility
11Cited by
19References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2004 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Sep 15, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A filter system for attenuating electromagnetic interference (EMI) of an autotransformer-based rectification system that utilizes the leakage inductance of the autotransformer and one or more capacitors connected on the secondary side and optionally one or more differential mode inductors and input capacitors connected on the primary side to form a differential mode EMI filter. This configuration reduces the size, weight, and cost of the differential mode EMI filter when compared with a differential filter formed by placing the inductors and capacitors on the primary side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.