Scandinova Systems Ab

Klas Elmqvist

Walter Frederick John Crewson

Magnus Graas

Andreas Wickström

Jonas Gustafsson

Jan Lundgren

Carl Hartman

Walter Fredrick John Crewson

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

Growing community of inventors

Uppsala, Sweden

Klas Elmqvist