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公开(公告)号：US10692684B2
公开(公告)日：2020-06-23
申请号：US15377539
申请日：2016-12-13
摘要： A circuit assembly includes plural voltage control modules configured to be operably coupled in series to a connection and configured to control voltage delivered to an X-ray electrode. Each voltage module includes an on/off circuit portion, a balancing circuit portion, and a tuning circuit portion. The on/off circuit portion is configured to provide a voltage for activating or deactivating the X-ray electrode. The balancing circuit portion is coupled in parallel to the on/off circuit portion, and includes a capacitor and a resistor coupled in parallel. The tuning circuit portion is coupled in parallel to the balancing circuit portion and the on/off circuit portion, and is configured to adjust a voltage provided to the X-ray electrode.
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公开(公告)号：US20190165689A1
公开(公告)日：2019-05-30
申请号：US15827981
申请日：2017-11-30
摘要： A power converter with a modular, compact architecture with a reduced component count is disclosed. The power converter includes parallel power conversion sections and utilizes one or more mutual coupling input inductors with multiple windings. The windings are connected in pairs in a differential mode between a power source and the parallel power conversion sections. Each power conversion section receives the same input voltage and generates the same output voltage. As a result of the winding connections and the same input and output voltages, the input of the power converter exhibits current balancing and sharing between each branch of the parallel configuration, allowing a single current sensor to provide a measurement of the current and a single controller to control operation of each of the power conversion sections.
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公开(公告)号：US10165663B2
公开(公告)日：2018-12-25
申请号：US15090852
申请日：2016-04-05
发明人： Uwe Wiedmann , Philippe Ernest , Denis Perrillat-Amede , Dominique Poincloux , Jean-Francois Larroux
摘要： An x-ray system for simultaneously or concurrently measuring currents of multiple emitters is provided. The x-ray system includes a high voltage direct current (DC) supply configured to supply tube current to the multiple emitters and plural emitter circuits. Each of these circuits includes each comprising an alternating current (AC) voltage supply, at least one of the multiple emitters operatively coupled to the AC voltage supply and the high voltage DC supply, and a circuit coupling the AC voltage supply and the high voltage DC voltage supply to the at least one of the multiple filaments. At least one of the emitter circuits has a current measurement device between the high voltage DC supply and the emitter.
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公开(公告)号：US20170231076A1
公开(公告)日：2017-08-10
申请号：US15015920
申请日：2016-02-04
发明人： Yannick Louvrier , Philippe Ernest , Denis Perrillat-Amede , Dominique Poincloux , Christophe Robert
CPC分类号： H05G1/32 , A61B6/032 , A61B6/0407 , A61B6/40 , A61B6/5211 , H01J35/06 , H01J35/08 , H05G1/10 , H05G1/54 , H05G1/58
摘要： In an X-ray generator an X-ray tube includes an anode and a cathode and is energized with at least a first high voltage potential. A dynamic damper with a frequency dependent impedance is interposed between the X-ray tube and a source of the high voltage potential. The impedance of the dynamic damper increases with an increase in frequency associated with tube-spit. In an X-ray generator with resonant switching to provide a first kV level and a second kV level to the X-ray tube, the impedance of the dynamic damper is low at the operational frequency of the resonant switch to promote energy recovery when the resonant switch operates to provide a first kV level to the X-ray tube.
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公开(公告)号：US10014623B2
公开(公告)日：2018-07-03
申请号：US15359937
申请日：2016-11-23
摘要： A high voltage connector is provided. The high voltage connector includes multiple electrical conductors, and at least one autotransformer. The high voltage connector is configured to couple a high voltage cable to an X-ray tube.
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公开(公告)号：US20180145609A1
公开(公告)日：2018-05-24
申请号：US15359850
申请日：2016-11-23
CPC分类号： H02M7/539 , A61B6/03 , A61B6/032 , A61B6/40 , A61B6/56 , H01L27/0623 , H01L29/1608 , H02M3/3353 , H02M7/797 , H03K17/6871 , H05G1/10 , H05G1/46 , H05G1/60 , Y02B70/1483
摘要： An inverter for a computed tomography (CT) system is provided. The inverter includes a hybrid switch. The hybrid switch includes a silicon carbide metal-oxide-semiconductor field-effect transistor (SiC MOSFET) portion, an insulated-gate bipolar transistor (IGBT) portion, a first gate associated within the SiC MOSFET portion, and a second gate associated with the IGBT portion. The SiC MOSFET portion and the IGBT portion of the hybrid switch are configured to be independently controlled via the first gate and the second gate.
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公开(公告)号：US09930765B2
公开(公告)日：2018-03-27
申请号：US15015920
申请日：2016-02-04
发明人： Yannick Louvrier , Philippe Ernest , Denis Perrillat-Amede , Dominique Poincloux , Christophe Robert
IPC分类号： H05G1/32 , A61B6/03 , A61B6/04 , A61B6/00 , H01J35/06 , H01J35/08 , H05G1/10 , H05G1/54 , H05G1/58
CPC分类号： H05G1/32 , A61B6/032 , A61B6/0407 , A61B6/40 , A61B6/5211 , H01J35/06 , H01J35/08 , H05G1/10 , H05G1/54 , H05G1/58
摘要： In an X-ray generator an X-ray tube includes an anode and a cathode and is energized with at least a first high voltage potential. A dynamic damper with a frequency dependent impedance is interposed between the X-ray tube and a source of the high voltage potential. The impedance of the dynamic damper increases with an increase in frequency associated with tube-spit. In an X-ray generator with resonant switching to provide a first kV level and a second kV level to the X-ray tube, the impedance of the dynamic damper is low at the operational frequency of the resonant switch to promote energy recovery when the resonant switch operates to provide a first kV level to the X-ray tube.
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8.发明授权Method and apparatus for controlling a multilevel soft switching power converter 有权用于控制多电平软开关电源转换器的方法和装置公开(公告)号：US09467065B2
公开(公告)日：2016-10-11
申请号：US14586162
申请日：2014-12-30
CPC分类号： H02M7/537 , H02M7/483 , H02M7/487 , H02M2001/0032 , H02M2001/0058 , Y02B70/1491 , Y02B70/16
摘要： A system for controlling a multilevel soft switching power converter including a DC bus, a pair of switching arms, and a controller is disclosed. The DC bus has a positive rail and a negative rail operable to have a voltage potential present across the DC bus. Each switching arm is connected between the positive rail and the negative rail and includes four soft switches. Each soft switch is connected between the positive rail, the negative rail, or one of three intermediate connections between the positive and negative rails. Each soft switch is also controlled by a gating signal. A flying capacitor is connected between the first intermediate connection and the third intermediate connection and an output terminal is connected at the second intermediate connection of each switching arm. A controller is operable to generate each of the gating signals utilizing at least three control routines.
摘要翻译： 公开了一种用于控制包括DC总线，一对开关臂和控制器的多电平软开关功率转换器的系统。 DC总线具有正轨和负轨，可操作以在直流母线上存在电压电位。 每个开关臂连接在正极和负极之间，包括四个软开关。 每个软开关连接在正轨，负轨之间，或正，负轨之间的三个中间连接之一。 每个软开关也由门控信号控制。 在第一中间连接和第三中间连接之间连接有飞溅电容器，并且在每个开关臂的第二中间连接处连接有输出端子。 控制器可操作以利用至少三个控制程序产生每个门控信号。
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公开(公告)号：US09438120B2
公开(公告)日：2016-09-06
申请号：US14160919
申请日：2014-01-22
CPC分类号： H02M3/33507 , H02M7/10 , H02M7/4807 , H02M2007/4815 , H05G1/58 , Y02B70/1441
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.
摘要翻译： 一种系统包括用于接收非零可变输入电压的双通道反相器，每个电耦合到双通道反相器的第一和第二输入通道，具有与第一和第二输入通道电连通的初级绕组的变压器，以及 次级绕组和与次级绕组电连通的有源谐振电路，用于在两个不同电压电平的每一个处产生开关输出电压。 有源谐振电路包括以反并联配置布置的开关器件，与开关器件串联电耦合的电容器，用于在谐振周期的第一部分期间接收和存储能量，并且用于在谐振的第二部分期间释放能量 循环，与电容器串联电耦合的电感器和用于在谐振周期期间将电能传送到电容器的开关装置和输出端。
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公开(公告)号：US20150207415A1
公开(公告)日：2015-07-23
申请号：US14160919
申请日：2014-01-22
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M7/10 , H02M7/4807 , H02M2007/4815 , H05G1/58 , Y02B70/1441
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.
摘要翻译： 一种系统包括用于接收非零可变输入电压的双通道反相器，每个电耦合到双通道反相器的第一和第二输入通道，具有与第一和第二输入通道电连通的初级绕组的变压器，以及 次级绕组和与次级绕组电连通的有源谐振电路，用于在两个不同电压电平的每一个处产生开关输出电压。 有源谐振电路包括以反并联配置布置的开关器件，与开关器件串联电耦合的电容器，用于在谐振周期的第一部分期间接收和存储能量，并且用于在谐振的第二部分期间释放能量 循环，与电容器串联电耦合的电感器和用于在谐振周期期间将电能传送到电容器的开关装置和输出端。
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