Saturable reactors
US4178540A · kind A · utility
0Cited by
4References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 20, 1978 |
| Grant date | Dec 11, 1979 |
| Priority date | — |
| Expiry date | Mar 20, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F38/023
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In order to prevent pulses induced in the excitation winding of a saturable reactor due to load current in the main winding from causing partial demagnetization of the core, a compensating coil of the same number of turns as the excitation winding is mounted on the core to generate pulses equal and opposite to the induced pulses. The compensating coil pulses are applied across an inductor connected in series with the main winding. A diode in series with the compensating coil prevents the excitation current from flowing through the coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.