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Improved Control Strategy for Active Bouncers used in Klystron Modulators
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| Author(s) |
Sebastian MAESTRI, Rogelio GARCIA RETEGUI, Benedetti MARIO, Nicolas WASSINGER, Davide AGUGLIA, David NISBET |
| Abstract |
This paper introduces a closed-loop control system for klystron modulators. The system isbased on the discharge of a capacitor into a step-up voltage transformer and an active bouncerimplemented with a multiphase buck converter. In order to obtain a constant Klystron voltageat the flat-top, the active bouncer must compensate both the capacitor discharge and the pulsetransformer characteristic. The proposed control includes an inner voltage regulation loop thatcontrols the active bouncer output voltage and an outer one that controls the klystron voltage.The primary side current and main capacitor voltage are included in the regulation loops tosimplify the controllers. Simulations demonstrate that the strategy adopted allows to obtaina precision better than 0:1\% on a 110 kV klystron. Experimental tests have shown that themultiphase converter is able to track a high dynamics reference even under variable outputvoltage conditions. |
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| Filename: | 0225-epe2011-full-10524775.pdf |
| Filesize: | 301.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2012-01-26 by System |
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