Systems and methods for fast kilovolt switching in an X-ray system
First Claim
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; and
an output configured to be electrically coupled to a load.
1 Assignment
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Accused Products
Abstract
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.
19 Citations
19 Claims
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1. A voltage switching system comprising:
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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; and an output configured to be electrically coupled to a load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of voltage switching comprising:
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receiving a non-zero variable input voltage from a voltage source; electrically communicating the non-zero variable input voltage to a primary winding of a transformer via a first input channel and a second input channel; switching a plurality of switching devices arranged in an anti-parallel configuration and coupled to a plurality of secondary windings of the transformer 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; during a first portion of a resonance cycle, receiving and storing energy in a capacitor electrically coupled in series with the plurality of switching devices; during a second portion of the resonance cycle, discharging the energy stored in the capacitor; during the resonance cycle, transferring the energy to and from the capacitor via an inductor electrically coupled in series with the capacitor and the plurality of switching devices; and outputting the switching output voltage to a load. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification