30 KA, 5000 V solid-state opening switch for inductive energy storage
Abstract
Inductive energy stores have demonstrated higher energy storage densities than capacitive energy stores. A limitation in the use of inductive energy stores has been the availability of adequately rated opening switches. A self-commutated solid-state switch has been developed for use as an opening device for an inductive energy store. A single switch module is rated at 30 kA and 5000 V. The charging pulse lengths for the intended application vary from 0.1 to 5 seconds. Efficiency and volumetric power density were optimized. The switch topology is a two-stage hybrid consisting of an SCR-FET/SCR-IGBT combination. The switch is designed to charge an inductive energy store and repetitively commutate the current to a railgun load. The first of ten switch modules for a 250 kA switch has been built and successfully tested on a battery test stand. The theory of operation, circuit topology, and test results are given in this paper.
- Publication:
-
Final Report
- Pub Date:
- January 1993
- Bibcode:
- 1993gac..reptQ....H
- Keywords:
-
- Electric Batteries;
- Electronic Equipment Tests;
- Energy Storage;
- Railgun Accelerators;
- Solid State;
- Switches;
- Test Stands;
- Capacitance;
- Launchers;
- Modules;
- Topology;
- Electronics and Electrical Engineering