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1. 发明授权

US09036784B2 Power converter, X-ray CT apparatus, and X-ray imaging apparatus 有权
标题翻译：功率转换器，X射线CT装置和X射线成像装置
公开(公告)号：US09036784B2
公开(公告)日：2015-05-19
申请号：US13575459
申请日：2011-02-08
申请人： Takatsugu Oketa , Hirokazu Iijima , Takuya Domoto
发明人： Takatsugu Oketa , Hirokazu Iijima , Takuya Domoto
IPC分类号： H05G1/10 , H02H7/122 , H02M7/48 , H05G1/20 , H02H1/00 , H02M1/32
CPC分类号： H05G1/10 , H02H1/0038 , H02H7/122 , H02M1/32 , H02M7/48 , H05G1/20
摘要： A power converter is configured to include an inverter which converts a DC output into an AC voltage of a predetermined frequency, and a high voltage generator which receives an output from output terminals of the inverter and boosts the output to a desired high DC voltage. The high voltage generator includes a transformer, and the primary windings of the transformer are connected to the output terminals of the inverter in parallel by conductive wires connected to both ends of each primary winding. Further, a current sensor is provided to detect a current flowing through each of the primary windings, and a control unit determines abnormalities of a path of the inverter and the primary windings on the basis of a value of the current sensor.
摘要翻译：电力转换器被配置为包括将DC输出转换为预定频率的AC电压的逆变器，以及接收来自逆变器的输出端的输出并将输出升压至期望的高DC电压的高压发生器。高压发生器包括变压器，并且变压器的初级绕组通过连接到每个初级绕组两端的导线并联连接到逆变器的输出端子。此外，提供电流传感器以检测流过每个初级绕组的电流，并且控制单元基于电流传感器的值来确定逆变器和初级绕组的路径的异常。

2. 发明授权

US08249217B2 Inverter device and X-ray high-voltage device using the inverter device 有权
标题翻译：变频器和X射线高压装置采用逆变器装置
公开(公告)号：US08249217B2
公开(公告)日：2012-08-21
申请号：US12744418
申请日：2008-12-01
申请人： Hirokazu Iijima , Takuya Domoto , Takayuki Masaki
发明人： Hirokazu Iijima , Takuya Domoto , Takayuki Masaki
IPC分类号： H05G1/10
CPC分类号： H02M1/32 , G01R31/025 , G01R31/42 , H05G1/12 , H05G1/20
摘要： There is provided an inverter device that can detect short-circuit of a switching element of an inverter circuit even under a load condition that a PWM driving signal is very small. The inverter device is provided with means for independently supplying a short-circuit detecting PWM driving signal to respective switching elements S1 to S4 at different timings before the inverter circuit 21 supplies a PWM driving signal for supplying power to a high voltage generating device 31, successively turning on the respective switching elements S1 to S4 with the short-circuit detecting PWM driving signal, detecting on-voltages of the switching elements S1 to S4 which are connected to the turned-on switching elements S1 to S4 in series, and detecting overcurrent or short-circuit states of the switching elements S1 to S4.
摘要翻译：提供了即使在PWM驱动信号非常小的负载条件下也可以检测逆变器电路的开关元件短路的逆变器装置。逆变器装置设置有用于在逆变器电路21连续地向高电压产生装置31提供电力供给PWM驱动信号之前，以不同的定时独立地向各开关元件S1〜S4供给短路检测PWM驱动信号的装置通过短路检测PWM驱动信号接通各开关元件S1〜S4，检测与导通开关元件S1〜S4串联连接的开关元件S1〜S4的导通电压，检测过电流或开关元件S1〜S4的短路状态。

3. 发明授权

US07924981B2 X-ray generator 有权
标题翻译： X光发生器
公开(公告)号：US07924981B2
公开(公告)日：2011-04-12
申请号：US12444766
申请日：2007-08-30
申请人： Hirokazu Iijima , Jun Takahashi
发明人： Hirokazu Iijima , Jun Takahashi
IPC分类号： H05G1/34
CPC分类号： H05G1/26 , H05G1/12 , H05G1/34 , H05G1/46
摘要： A discharging part of an X-ray generator using a one-side earthed X-ray tube is earthed is identified on the basis of the tube voltage detected value and the tube current detected value. For the identification, the X-ray generator comprises a device comprising tube voltage decrease slope calculating means (S4), tube current increase calculating means (S4), first judging means (S5) for judging whether or not the slope of the tube voltage decrease exceeds its acceptable value, second judging means (S6) for judging whether or not the increase of the tube current exceeds its acceptable value, and discharge portion identifying means (S7, S8) for identifying the discharging part which is in the X-ray tube or a high-voltage generating unit on the basis of the results of the judgments made by the first and second judging means. The identified discharging part is displayed on display means (S9).
摘要翻译：基于管电压检测值和管电流检测值来识别使用单侧接地X射线管的X射线发生器的放电部分。为了识别，X射线发生器包括管电压降低斜率计算装置（S4），管电流增加计算装置（S4）的装置，用于判断管电压的斜率是否下降的第一判断装置（S5）超过其可接受值的第二判断装置（S6），用于判断管电流的增加是否超过其可接受值;以及用于识别X射线管中的放电部分的放电部分识别装置（S7，S8）或高电压产生单元，基于第一和第二判断装置的判断结果。识别的放电部分显示在显示装置上（S9）。

4. 发明申请

US20090316859A1 X-RAY GENERATOR 有权
标题翻译： X射线发生器
公开(公告)号：US20090316859A1
公开(公告)日：2009-12-24
申请号：US12444766
申请日：2007-08-30
申请人： Hirokazu Iijima , Jun Takahashi
发明人： Hirokazu Iijima , Jun Takahashi
IPC分类号： H05G1/34
CPC分类号： H05G1/26 , H05G1/12 , H05G1/34 , H05G1/46
摘要： A discharging part of an X-ray generator using a one-side earthed X-ray tube, i.e., the anode or cathode is earthed is identified on the basis of the tube voltage detected value and the tube current detected value. For the identification, the X-ray generator comprises a device comprising tube voltage decrease slope calculating means (S4) for calculating the slope of decrease with time of the tube voltage detected value, tube current increase calculating means (S4) for calculating the increase of the tube current detected value in a predetermined time, first judging means (S5) for judging whether or not the slope of the tube voltage decrease calculated in the tube voltage decrease slope calculating means exceeds its acceptable value, second judging means (S6) for judging whether or not the increase of the tube current calculated in the tube current increase calculating means exceeds its acceptable value, and discharge portion identifying means (S7, S8) for identifying the discharging part which is in the X-ray tube or a high-voltage generating unit on the basis of the results of the judgments made by the first and second judging means. The identified discharging part is displayed on display means (S9).Therefore, provided is a small-sized high-reliable X-ray generator having a function of identifying a discharging part with high accuracy.
摘要翻译：基于管电压检测值和管电流检测值来识别使用单侧接地X射线管即阳极或阴极接地的X射线发生器的放电部分。为了识别，X射线发生器包括用于计算管电压检测值随时间的减小斜率的管电压降低斜率计算装置（S4）的装置，用于计算增加的管电流增加计算装置（S4）在预定时间内的管电流检测值，用于判断在管电压降低斜率计算装置中计算的管电压降低的斜率是否超过其可接受值的第一判断装置（S5），用于判断在管电流增加计算装置中计算的管电流的增加是否超过其可接受值，以及用于识别X射线管中的放电部分的高电压的放电部分识别装置（S7，S8）基于由第一和第二判断装置作出的判断结果的发电单元。识别的放电部分显示在显示装置上（S9）。因此，提供了具有高精度地识别放电部的功能的小型高可靠性X射线发生器。

5. 发明申请

US20100254515A1 INVERTER DEVICE AND X-RAY HIGH-VOLTAGE DEVICE USING THE INVERTER DEVICE 有权
标题翻译：使用逆变器装置的逆变器装置和X射线高压装置
公开(公告)号：US20100254515A1
公开(公告)日：2010-10-07
申请号：US12744418
申请日：2008-12-01
申请人： Hirokazu Iijima , Takuya Domoto , Takayuki Masaki
发明人： Hirokazu Iijima , Takuya Domoto , Takayuki Masaki
IPC分类号： H05G1/32 , H02M7/537
CPC分类号： H02M1/32 , G01R31/025 , G01R31/42 , H05G1/12 , H05G1/20
摘要： There is provided an inverter device that can detect short-circuit of a switching element of an inverter circuit even under a load condition that a PWM driving signal is very small. The inverter device is provided with means for independently supplying a short-circuit detecting PWM driving signal to respective switching elements S1 to S4 at different timings before the inverter circuit 21 supplies a PWM driving signal for supplying power to a high voltage generating device 31, successively turning on the respective switching elements S1 to S4 with the short-circuit detecting PWM driving signal, detecting on-voltages of the switching elements S1 to S4 which are connected to the turned-on switching elements S1 to S4 in series, and detecting overcurrent or short-circuit states of the switching elements S1 to S4.
摘要翻译：提供了即使在PWM驱动信号非常小的负载条件下也可以检测逆变器电路的开关元件短路的逆变器装置。逆变器装置设置有用于在逆变器电路21连续地向高电压产生装置31提供电力供给PWM驱动信号之前，以不同的定时独立地向各开关元件S1〜S4供给短路检测PWM驱动信号的装置通过短路检测PWM驱动信号接通各开关元件S1〜S4，检测与导通开关元件S1〜S4串联连接的开关元件S1〜S4的导通电压，检测过电流或开关元件S1〜S4的短路状态。

6. 发明申请

US20120294428A1 POWER CONVERTER, X-RAY CT APPARATUS, AND X-RAY IMAGING APPARATUS 有权
标题翻译：电力转换器，X射线CT装置和X射线成像装置
公开(公告)号：US20120294428A1
公开(公告)日：2012-11-22
申请号：US13575459
申请日：2011-02-08
申请人： Takatsugu Oketa , Hirokazu Iijima , Takuya Domoto
发明人： Takatsugu Oketa , Hirokazu Iijima , Takuya Domoto
IPC分类号： H05G1/12 , H02H7/122
CPC分类号： H05G1/10 , H02H1/0038 , H02H7/122 , H02M1/32 , H02M7/48 , H05G1/20
摘要： In order to prevent breakage of a power converter, a current which flows into an inverter (3) in the power converter is detected.The inverter (3) is equipped with two or more primary windings in parallel with each other.The current flowing through each of the primary windings is detected by current sensors (17, 6).A control unit (22) determines from the outputs of the current sensors that an abnormality occurs, when current does not flow through any of the primary windings.
摘要翻译：为了防止功率转换器的损坏，检测流入功率转换器的逆变器（3）的电流。逆变器（3）配备有彼此平行的两个以上的初级绕组。流过每个初级绕组的电流由电流传感器（17,6）检测。当电流不通过任何一次绕组时，控制单元（22）从电流传感器的输出确定异常发生。

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