| Paper |
Title |
Page |
| THPPH030 |
Main High Voltage Solid State Gyrotron Power Supply 60kV / 80A
|
633 |
| |
- M. P.C. Pretelli, L. Rinaldi, V. R. Rossi, L. Sita, G. Taddia
O. C.E. M. S.p. A., Bologna
- T. Bonicelli, P. L. Mondino
EFDA, Garching
- R. Claesen, M. Santinelli
ENEA C. R. Frascati, Frascati (Roma)
- D. Fasel
EPFL, Lausanne
|
|
| |
This paper describes the design of a 4.8MW Main High Voltage Power Supply, rated 60kV/80A, conceived to supply the voltage between Cathode and grounded Collector of a Gyrotron. The PS is being procured for the EC Test Facility in Lausanne for the development and testing of CPD type 170GHz Gyrotrons. The PS specifications include the requirement of fast and repetitive switch on and off of the current up to 5kHz in order to reduce the average power dissipation on the Collector during modulation of the RF power. A full solid state technology, named SWM (Stair-Way Modulation) has been adopted. The 60kV output voltage is reached by adding 128 high voltage modules in series connection, with ad hoc control criteria to allow a regulation at full performances in the range of 45-60kV, a square wave modulation and a fast switch-off in less than 10us. This solution can be extended to several applications in the High Voltage domain and is aimed to enhance the reliability, decrease costs, provide redundancy and plug-in modularity. In the paper, the technical implications of extending similar topologies to the ITER EC system as alternative to the present ITER reference design will be considered.
|
|