Force commutation static frequency changer apparatus using direct capacitor commutation
US3989996A · kind A · utility
9Cited by
7References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 25, 1974 |
| Grant date | Nov 2, 1976 |
| Priority date | — |
| Expiry date | Sep 25, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/271
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved force commutated cycloconverter is provided by alternatively switching a capacitor to different groups of main thyristors including a thyristor to be commutated in the controlled sequence of thyristor conductions. The capacitor swing back to an opposite polarity before each successive commutation. Commutation is made possible at low load current by the adjunction of a resonant reset circuit. The force commutating circuit is applied to various configurations of cycloconverters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.