Scandinova Systems Ab

Walter Frederick John Crewson

Klas Elmqvist

Mark Kaltenborn

Mikael Rolf Lindholm

David Kerr Woodburn

Magnus Graas

Carl Hartman

Andreas Wickström

Jonas Gustafsson

Jan Lundgren

A capacitor charger system has a resonant power converter to connect to a capacitor via a rectifier. The resonant power converter has a switch-based bridge network, an internal transformer, a resonant circuit, and an amplitude stabilization circuit. The switch-based bridge network comprises at least one pair of switches. The resonant circuit includes a series-resonant branch with capacitive and inductive components, and the resonant circuit is connected in the circuit path to a midpoint between a pair of switches of the switch-based bridge network. The amplitude stabilization circuit provides stabilization of the resonant amplitude of the resonant circuit, and the amplitude stabilization circuit includes one-way conducting circuitry connected between an unrestricted node defined by a junction and a connection point of the resonant power converter having a predefined voltage level at operation. The resonant power converter connects to the output rectifier via the secondary winding of the internal transformer.

Capacitor charger system, power modulator and resonant power converter

The invention relates to a capacitor charger system () comprising a capacitor charger module (), an isolated acquisition module (), and a digital control module (). The isolated acquisition module () is configured for sampling an output voltage level of said capacitor charger module (). The digital control module () is connected to the isolated acquisition module () via a bi-directional link and connected to the capacitor charger module () via a control signal interface. The digital control module () is configured for generating control signal information and synchronization signal information based on data representative of sampled output voltage levels received via the bi-directional link from the isolated acquisition module. The digital control module () is further configured for sending the control signal information to the capacitor charger module () via the control signal interface and for sending the synchronization signal information to the isolated acquisition module () via the bidirectional link. The capacitor charger module () is controlled based on the control signal information from the digital control module, and the isolated acquisition module () is configured for performing sampling based on the synchronization signal information.

Capacitor charger system and digital control module and isolated acquisition module for such a capacitor charger system

A particle accelerator () comprises a power supply arrangement (), a plurality of solid-state switched drive sections (), a plurality of magnetic core sections () and a switch control module (). The drive sections () are connected to the power supply arrangement () for receiving electrical power therefrom, and each drive section comprises a solid-state switch, electronically controllable at turn-on and turn-off, for selectively providing a drive pulse at an output of the drive section. The magnetic core sections () are symmetrically arranged along a central beam axis, and each magnetic core of the sections is coupled to a respective drive section () through an electrical winding connected to the output of the drive section. The switch control module () is connected to the drive sections () for providing control signals to control turn-on and turn-off of the solid state switches to selectively drive magnetic cores to induce an electric field for accelerating the beam of charged particles along the beam axis.

Particle accelerator and magnetic core arrangement for a particle accelerator

A power modulator comprises a plurality of switched pulse generator sections (), a power supply arrangement (), and a transformer arrangement (). A switch control () is connected to said plurality of switched pulse generator sections () for providing control signals for turning on and/or turning off them. The switch control () is arranged to provide control signals for turning on and/or turning off switched pulse generator sections of a first subset at a first time instant and to provide control signals for turning on and/or turning off switched pulse generator sections of a second subset at a second time instant, different from the first time instant: The second subset is different from the first subset.

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Munsonville, NH, United States of America

Walter Frederick John Crewson