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SPECIAL CONVERTER CIRCUITS FEEDING THE FIELD WINDING OF SUPERCONDUCTING SYNCHRONOUS GENERATORS
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| Author(s) |
R. Schweiger; H. W. Lorenzen |
| Abstract |
In the course of the experimental investigations on a 330 kVA externalpole synchronous generator with a superconducting excitation winding various converter circuits for feeding the superconducting field circuit have been designed and tested at the lnstitute of Electrical Machines since 1987. Besides the well-known and wide-spread six- and twelve-pulse three-phase bridges (B6 and B6||B6 with two 30 degree phase shifted lines) a six-pulse three-phase bridge with controlled bypass-thyristors and a high current Power-MOSFET step-down converter have been investigated. These two circuits are good suitable for feeding superconducting loads and thereby also interesting for other means of application besides superconducting generators. This paper describes the principle and the technical realization of this circuits including their controllers as well as the special problems appearing by use of these circuits. |
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| Filename: | Unnamed file |
| Filesize: | 3.854 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-08-07 by System |
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