Electrical power generating system producing alternating and direct current
US5737196A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1996 |
| Grant date | Apr 7, 1998 |
| Priority date | — |
| Expiry date | Aug 12, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/458
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is an electrical power generating system and method of operation. An inverter (18) is responsive to a DC potential for producing a fundamental frequency alternating current output such as 400 Hz. three-phase AC including harmonics. A first harmonic suppression filter (22), coupled to the alternating current output, produces an output having reduced harmonics compared to the harmonics in the input of the inverter. An isolation transformer (61) has a primary coupled to an output (24) of the first harmonic filter, a first secondary for outputting the alternating current at the fundamental frequency, and a second secondary for also outputting the alternating current at the fundamental frequency. A first rectifier (65) is coupled to the output (63) of the first secondary and produces direct current including harmonics produced by the rectification. A second harmonic suppression filter (69), coupled to the output (67) of the rectifier, outputs direct current having reduced harmonics compared to the harmonics in the output of the fullwave rectifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.