Systems and methods for fast kilovolt switching in an X-ray system

摘要

A system includes a two-channel inverter for receiving a non-zero variable input voltage, first and second input channels each electrically coupled to the two-channel inverter, a transformer having a primary winding in electrical communication with the first and second input channels and secondary windings, and an active resonant circuit in electrical communication with the secondary windings for generating a switching output voltage at each of two different voltage levels. The active resonant circuit includes switching devices arranged in an anti-parallel configuration, a capacitor electrically coupled in series with the switching devices for receiving and storing energy during a first portion of a resonance cycle and for discharging the energy during a second portion of the resonance cycle, an inductor electrically coupled in series with the capacitor and the switching devices for transferring the energy to and from the capacitor during the resonance cycle, and an output.

主权项

1. A voltage switching system comprising:
a two-channel inverter configured to receive a non-zero variable input voltage from a voltage source; a first input channel and a second input channel each electrically coupled to the two-channel inverter; a transformer having a primary winding in electrical communication with the first input channel and the second input channel, and a plurality of secondary windings; and an active resonant circuit in electrical communication with the secondary windings of the transformer and configured to generate a switching output voltage at each of two different voltage levels, each of the two different voltage levels being different than the non-zero variable input voltage, the active resonant circuit comprising:
a plurality of switching devices arranged in an anti-parallel configuration;a capacitor electrically coupled in series with the plurality of switching devices and configured to receive and store energy during a first portion of a resonance cycle and further configured to discharge the energy during a second portion of the resonance cycle;an inductor electrically coupled in series with the capacitor and the plurality of switching devices and configured to transfer the energy to and from the capacitor during the resonance cycle; andan output configured to be electrically coupled to a load.