Thyristor tap changer for electrical inductive apparatus
US4220911A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 8, 1978 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Sep 8, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P13/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Tap changing apparatus including a plurality of electrical inductive windings, each having an intermediate tap which divides each winding into two sections with the voltage of one section being twice that of the other section. Gate-controlled electronic switches, disposed between the ends and the intermediate tap of each winding and each of two output terminals, are selectively triggered to form a conductive path which will cause either or both sectons of each tapped winding to be connected into a circuit so that it will aid, oppose or bypass the circuit. The switching sequences provide a full range of positive to negative output voltage magnitudes for each winding in incremental unit steps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.