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Improved Control Strategy for Active Bouncers used in Klystron Modulators

This paper introduces a closed-loop control system for klystron modulators. The system is based on the discharge of a capacitor into a step-up voltage transformer and an active bouncer implemented with a multiphase buck converter. In order to obtain a constant Klystron voltage at the at-top, the act...

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Detalles Bibliográficos
Autores principales: Aguglia, D, Antoszczuk, P, Benedetti, M, Garcia Retegui, R, Maestri, S, Nisbet, D
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:http://cds.cern.ch/record/1432949
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author Aguglia, D
Antoszczuk, P
Benedetti, M
Garcia Retegui, R
Maestri, S
Nisbet, D
author_facet Aguglia, D
Antoszczuk, P
Benedetti, M
Garcia Retegui, R
Maestri, S
Nisbet, D
author_sort Aguglia, D
collection CERN
description This paper introduces a closed-loop control system for klystron modulators. The system is based on the discharge of a capacitor into a step-up voltage transformer and an active bouncer implemented with a multiphase buck converter. In order to obtain a constant Klystron voltage at the at-top, the active bouncer must compensate both the capacitor discharge and the pulse transformer characteristic. The proposed control includes an inner voltage regulation loop that controls 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 to simplify the controllers. Simulations demonstrate that the strategy adopted allows to obtain a precision better than 0:1% on a 110 kV klystron. Experimental tests have shown that the multiphase converter is able to track a high dynamics reference even under variable output voltage conditions.
id cern-1432949
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2012
record_format invenio
spelling cern-14329492019-09-30T06:29:59Zhttp://cds.cern.ch/record/1432949engAguglia, DAntoszczuk, PBenedetti, MGarcia Retegui, RMaestri, SNisbet, DImproved Control Strategy for Active Bouncers used in Klystron ModulatorsAccelerators and Storage RingsThis paper introduces a closed-loop control system for klystron modulators. The system is based on the discharge of a capacitor into a step-up voltage transformer and an active bouncer implemented with a multiphase buck converter. In order to obtain a constant Klystron voltage at the at-top, the active bouncer must compensate both the capacitor discharge and the pulse transformer characteristic. The proposed control includes an inner voltage regulation loop that controls 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 to simplify the controllers. Simulations demonstrate that the strategy adopted allows to obtain a precision better than 0:1% on a 110 kV klystron. Experimental tests have shown that the multiphase converter is able to track a high dynamics reference even under variable output voltage conditions.CERN-ATS-2012-058oai:cds.cern.ch:14329492012-03-15
spellingShingle Accelerators and Storage Rings
Aguglia, D
Antoszczuk, P
Benedetti, M
Garcia Retegui, R
Maestri, S
Nisbet, D
Improved Control Strategy for Active Bouncers used in Klystron Modulators
title Improved Control Strategy for Active Bouncers used in Klystron Modulators
title_full Improved Control Strategy for Active Bouncers used in Klystron Modulators
title_fullStr Improved Control Strategy for Active Bouncers used in Klystron Modulators
title_full_unstemmed Improved Control Strategy for Active Bouncers used in Klystron Modulators
title_short Improved Control Strategy for Active Bouncers used in Klystron Modulators
title_sort improved control strategy for active bouncers used in klystron modulators
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/1432949
work_keys_str_mv AT agugliad improvedcontrolstrategyforactivebouncersusedinklystronmodulators
AT antoszczukp improvedcontrolstrategyforactivebouncersusedinklystronmodulators
AT benedettim improvedcontrolstrategyforactivebouncersusedinklystronmodulators
AT garciareteguir improvedcontrolstrategyforactivebouncersusedinklystronmodulators
AT maestris improvedcontrolstrategyforactivebouncersusedinklystronmodulators
AT nisbetd improvedcontrolstrategyforactivebouncersusedinklystronmodulators