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1. 发明授权

US08588371B2 Phase shift inverter, X-ray high-voltage device using same, X-ray CT device, and X-ray imaging device 有权
标题翻译：相移逆变器，使用其的X射线高压装置，X射线CT装置和X射线成像装置
公开(公告)号：US08588371B2
公开(公告)日：2013-11-19
申请号：US13127289
申请日：2009-11-05
申请人： Mina Ogawa , Itaru Ando , Kiyoshi Ohishi , Shoutaro Shindo
发明人： Mina Ogawa , Itaru Ando , Kiyoshi Ohishi , Shoutaro Shindo
IPC分类号： H05G1/10
CPC分类号： H02M7/53871 , H02M2007/4815 , H05G1/20 , Y02B70/1441
摘要： An inverter circuit allowing a single drive circuit to perform both tracking control for tracking resonance frequency fluctuations caused by load fluctuations, and power control, thereby reducing switching loss. An inverter drive circuit part obtains a phase difference between output current and output voltage directed to a load circuit connected to a midpoint of two arm circuits of the inverter circuit, and controls a phase of the driving signal directed to each semiconductor switch such that the phase difference becomes zero or a predetermined value, enabling an operating frequency of the inverter circuit part to track a resonance frequency of the load circuit, and enabling a current phase to be delayed with respect to a voltage phase, thereby achieving ZCS. Since the phase difference is used, an auxiliary circuit is not necessary for measuring a current value in proximity to the semiconductor switches.
摘要翻译：逆变器电路允许单个驱动电路执行用于跟踪由负载波动引起的谐振频率波动的跟踪控制和功率控制，从而减少开关损耗。逆变器驱动电路部分获得与逆变器电路的两臂电路的中点连接的负载电路的输出电流和输出电压之间的相位差，并且控制朝向每个半导体开关的驱动信号的相位，使得相位差变为零或预定值，使得逆变器电路部分的工作频率能够跟踪负载电路的谐振频率，并使电流相位相对于电压相位延迟，从而实现ZCS。由于使用相位差，所以不需要辅助电路来测量靠近半导体开关的电流值。

2. 发明申请

US20110222651A1 PHASE SHIFT INVERTER, X-RAY HIGH-VOLTAGE DEVICE USING SAME, X-RAY CT DEVICE, AND X-RAY IMAGING DEVICE 有权
标题翻译：相位变换器，使用相同的X射线高压装置，X射线CT装置和X射线成像装置
公开(公告)号：US20110222651A1
公开(公告)日：2011-09-15
申请号：US13127289
申请日：2009-11-05
申请人： Mina Ogawa , Itaru Ando , Kiyoshi Ohishi , Shoutaro Shindo
发明人： Mina Ogawa , Itaru Ando , Kiyoshi Ohishi , Shoutaro Shindo
IPC分类号： A61B6/03 , H02M7/537 , H05G1/10
CPC分类号： H02M7/53871 , H02M2007/4815 , H05G1/20 , Y02B70/1441
摘要： There is provided an inverter circuit which allows a single drive circuit to carry out both the tracking control for tracking resonance frequency fluctuations caused by load fluctuations, and the power control, thereby reducing switching loss. An inverter drive circuit part obtains a phase difference between output current and output voltage directed to a load circuit which is connected to a midpoint of two arm circuits of the inverter circuit, and controls a phase of the driving signal directed to each of the semiconductor switches in such a manner that the phase difference becomes zero or a predetermined value. This allows an operating frequency of the inverter circuit part to track a resonance frequency of the load circuit. In addition, this enables a current phase to be delayed with respect to a voltage phase, thereby achieving ZCS. Since the phase difference between the output current and the output voltage is used, it is not necessary to use an auxiliary circuit to measure a current value in proximity to the semiconductor switches, thereby achieving a simple configuration.
摘要翻译：提供了一种逆变器电路，其允许单个驱动电路执行用于跟踪由负载波动引起的谐振频率波动和功率控制的跟踪控制，从而减少开关损耗。逆变器驱动电路部分获得与逆变器电路的两臂电路的中点连接的负载电路的输出电流和输出电压之间的相位差，并且控制朝向每个半导体开关的驱动信号的相位以相位差变为零或预定值的方式。这允许逆变器电路部分的工作频率跟踪负载电路的谐振频率。此外，这使得能够相对于电压相位延迟电流相位，从而实现ZCS。由于使用输出电流和输出电压之间的相位差，因此不需要使用辅助电路来测量靠近半导体开关的电流值，从而实现简单的结构。

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