VAR Generator with current sensitive inductance break point
US4210860A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1978 |
| Grant date | Jul 1, 1980 |
| Priority date | — |
| Expiry date | Sep 15, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The static VAR generator of the fixed capacitor switch-controlled inductor type is taught. The inductive element has a break point in its inductive characteristic. That is, below a certain predetermined current, the inductance is one value and above the latter current the inductance is another value. This has the effect of providing a reduced value of inductive reactance above a certain inductive current level thus making it possible to significantly increase the inductive current above its normal range with a small increase of the switch conduction interval. In one case a saturable iron core reactor is utilized to achieve the break point and in another case two inductive elements are provided--one of which is controlled by a switch which places the latter inductor into circuit arrangement with the first at the time that the current exceeds the predetermined value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.