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1.发明授权Power source apparatus including a plurality of output current amplifiers connected in parallel and MRI apparatus using the same 失效电源装置包括并联连接的多个输出电流放大器和使用其的MRI装置
公开(公告)号：US5721490A
公开(公告)日：1998-02-24
申请号：US597959
申请日：1996-02-07
IPC分类号： G01R33/385 , G01V3/00
CPC分类号： G01R33/3852
摘要： A power source apparatus distributes a current command value to be supplied to a load to a plurality of output current amplifiers connected in parallel with the load, and each of the output current amplifiers supplies an output current corresponding to the current command value so distributed. This power source apparatus prevents a circulating current between the output current amplifiers by controlling each output current amplifier so that the difference between the output current from each output current amplifier and the distributed current command value becomes zero, or by inserting current limiting devices into the output line of each output current amplifier.
摘要翻译： 电源装置将要提供给负载的电流指令值分配给与负载并联连接的多个输出电流放大器，并且每个输出电流放大器提供与分配的当前指令值相对应的输出电流。 该电源装置通过控制每个输出电流放大器来防止输出电流放大器之间的循环电流，使得来自每个输出电流放大器的输出电流与分布电流指令值之间的差变为零，或者通过将限流装置插入输出 每路输出电流放大器。
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公开(公告)号：US07224768B2
公开(公告)日：2007-05-29
申请号：US10500700
申请日：2003-01-24
申请人： Takuya Domoto , Hiroshi Takano
发明人： Takuya Domoto , Hiroshi Takano
IPC分类号： H05G1/66
摘要： An X-ray tube apparatus (2) having an anode rotating mechanism for preventing damage of the anode (23) of the X-ray tube apparatus thereby to shorten the X-ray exposure waiting time. When the measured number of revolutions of a rotary anode is determined to be predetermined number from only the impedance or current information on the basis of both voltage information and current information on a stator coil (22) of motor constituent elements for rotating the rotary anode, a DC high voltage outputted from an X-ray high-voltage unit (1) is applied between the anode (23) and a cathode (24) of the X-ray tube apparatus, thus exposing a subject (130) to X-rays and imaging the subject. An X-ray generating device and a radiograph are also disclosed.
摘要翻译： 一种具有用于防止X射线管装置的阳极（23）的损坏的阳极旋转机构的X射线管装置（2），从而缩短了X射线曝光等待时间。 当基于用于旋转阳极旋转的电动机构成元件的定子线圈（22）上的电压信息和电流信息两者将旋转阳极的测量转数从仅基于阻抗或电流信息确定为预定数量时， 从X射线高压单元（1）输出的直流高电压被施加在X射线管装置的阳极（23）和阴极（24）之间，从而使被摄体（130）暴露于X射线 并对受试者进行成像。 还公开了X射线产生装置和放射照片。
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公开(公告)号：US20060165220A1
公开(公告)日：2006-07-27
申请号：US10527161
申请日：2003-09-05
申请人： Jun Takahashi , Takuya Domoto , Hiroshi Takano
发明人： Jun Takahashi , Takuya Domoto , Hiroshi Takano
CPC分类号： H05G1/10
摘要： In an X-ray generating device of the neutral grounding system, to remove an unbalance voltage generated due to difference in impedance of parallel transformer coils of the high voltage transformer and particularly an unbalance voltage involved with difference in impedance above and below the neutral points generated in a metal X-ray tube, a plurality of currents flowing in opposite directions through primary windings of the parallel transformer coils in the high voltage transformer are passed through by or wound around a common toroidal coil or wound around an outer circumference of the toroidal coil at a predetermined ratio of winding number, and the unbalance voltage occurring to the secondary side is cancelled by changing primary current with magnetic behavior.
摘要翻译： 在中性点接地系统的X射线发生装置中，为了消除由于高压变压器的并联变压器线圈的阻抗差异而产生的不平衡电压，特别是与产生的中性点之上和之下的阻抗差异相关的不平衡电压 在金属X射线管中，通过高压变压器中的并联变压器线圈的初级绕组沿相反方向流动的多个电流通过或围绕公共环形线圈缠绕或围绕环形线圈的外周缠绕 以预定的绕组数比，并且通过用磁性行为改变初级电流来消除发生到次级侧的不平衡电压。
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公开(公告)号：US07400708B2
公开(公告)日：2008-07-15
申请号：US10527161
申请日：2003-09-05
申请人： Jun Takahashi , Takuya Domoto , Hiroshi Takano
发明人： Jun Takahashi , Takuya Domoto , Hiroshi Takano
IPC分类号： H05G1/10
CPC分类号： H05G1/10
摘要： In an X-ray generating device of the neutral grounding system, to remove an unbalance voltage generated due to difference in impedance of parallel transformer coils of the high voltage transformer and particularly an unbalance voltage involved with difference in impedance above and below the neutral points generated in a metal X-ray tube, a plurality of currents flowing in opposite directions through primary windings of the parallel transformer coils in the high voltage transformer are passed through by or wound around a common toroidal coil or wound around an outer circumference of the toroidal coil at a predetermined ratio of winding number, and the unbalance voltage occurring to the secondary side is cancelled by changing primary current with magnetic behavior.
摘要翻译： 在中性点接地系统的X射线发生装置中，为了消除由于高压变压器的并联变压器线圈的阻抗差异而产生的不平衡电压，特别是与产生的中性点之上和之下的阻抗差异相关的不平衡电压 在金属X射线管中，通过高压变压器中的并联变压器线圈的初级绕组沿相反方向流动的多个电流通过或围绕公共环形线圈缠绕或围绕环形线圈的外周缠绕 以预定的绕组数比，并且通过用磁性行为改变初级电流来消除发生到次级侧的不平衡电压。
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5.发明申请Switching type power source device and magnetio resonance imaging device using the same 审中-公开开关式电源装置及使用其的磁共振成像装置公开(公告)号：US20060114623A1
公开(公告)日：2006-06-01
申请号：US10542796
申请日：2004-02-06
申请人： Takuya Domoto , Hiroshi Takano
发明人： Takuya Domoto , Hiroshi Takano
IPC分类号： H02H7/00
CPC分类号： H02M7/487 , G01R33/3852 , H02M7/493 , H02M2003/1555
摘要： A switching type power source device used for magnetic field generation coils for an MRI device in which a switching power sources (9˜11) are constituted by a first and a second multi level PWM inverter (12,13) having a same number of potential levels connected in parallel each other with respect to magnetic field generating coils (6˜8) for the MRI device working as a load as well as a switching control circuit (19) for drive controlling the first and the second multi level PWM inverter (12,13) is constituted to drive control the first and the second multi level PWM inverter (12,13) in a manner to shift the switching phases thereof each other, thereby, ripple components in currents output from the first and the second multi level PWM inverter (12,13) are canceled out each other and a current with a further reduced ripple components as a whole can be supplied to the load (6˜8).
摘要翻译： 一种用于MRI装置的磁场产生线圈的开关型电源装置，其中开关电源（9〜11）由具有相同数量电位的第一和第二多电平PWM逆变器（12,13）构成 相对于作为负载的MRI装置的磁场产生线圈（6〜8）并联连接的电平以及用于驱动控制第一和第二多电平PWM逆变器（12）的开关控制电路（19） ，13）被构造成以使第一和第二多电平PWM逆变器（12,13）的开关相位彼此偏移的方式驱动控制，从而从第一和第二多电平PWM输出的电流中的纹波分量 逆变器（12,13）彼此抵消，并且可以将整个进一步减小的纹波分量的电流提供给负载（6〜8）。
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6.发明申请X-ray tube apparatus, x-rya exposure determiner, x-ray generator using them, and radiograph 有权X射线管装置，x-rya曝光确定器，使用它们的X射线发生器和射线照相公开(公告)号：US20050226384A1
公开(公告)日：2005-10-13
申请号：US10500700
申请日：2003-01-24
申请人： Takuya Domoto , Hiroshi Takano
发明人： Takuya Domoto , Hiroshi Takano
摘要： An X-ray tube apparatus (2) having an anode rotating mechanism for preventing damage of the anode (23) of the X-ray tube apparatus thereby to shorten the X-ray exposure waiting time. When the measured number of revolutions of a rotary anode is determined to be predetermined number from only the impedance or current information on the basis of both voltage information and current information on a stator coil (22) of motor constituent elements for rotating the rotary anode, a DC high voltage outputted from an X-ray high-voltage unit (1) is applied between the anode (23) and a cathode (24) of the X-ray tube apparatus, thus exposing a subject (130) to X-rays and imaging the subject. An X-ray generating device and a radiograph are also disclosed.
摘要翻译： 一种具有用于防止X射线管装置的阳极（23）的损坏的阳极旋转机构的X射线管装置（2），从而缩短了X射线曝光等待时间。 当基于用于旋转阳极旋转的电动机构成元件的定子线圈（22）上的电压信息和电流信息两者将旋转阳极的测量转数从仅基于阻抗或电流信息确定为预定数量时， 从X射线高压单元（1）输出的直流高电压被施加在X射线管装置的阳极（23）和阴极（24）之间，从而使被摄体（130）暴露于X射线 并对受试者进行成像。 还公开了X射线产生装置和放射照片。
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7.发明授权公开(公告)号：US07928600B2
公开(公告)日：2011-04-19
申请号：US11993818
申请日：2006-06-30
申请人： Shingo Hishikawa , Takuya Domoto
发明人： Shingo Hishikawa , Takuya Domoto
IPC分类号： H02J3/00
CPC分类号： H02M7/483 , G01R33/3614 , G01R33/383 , G01R33/3852 , Y10T307/297 , Y10T307/685
摘要： A DC high voltage power source is constituted by an AC-DC converting means (4, 6) that converts a voltage of a commercial AC power source (3) to a DC voltage and steps up the converted DC voltage, a DC-AC converting means (7) that converts the DC voltage stepped up by the previous means to an AC voltage, two insulating transformer (8, 9) that steps up the AC voltage converted by the previous converting means while insulating each others and a series connection of DC voltages obtained after converting the output voltages from the transformers to DCs and smoothing the same. The DC voltage of the DC high voltage power source is used as the power source to current amplifiers (19, 20, 21) constituted by a multi level PWM inverter circuit (18) of 3 levels and the currents flowing through X axis, Y axis and Z axis gradient magnetic field coil (15, 16, 17) in an MRI apparatus connected to these current amplifiers as loads are controlled by a switching control device (18q) so as to meet with current command values (22c1, 22c2, 22c3) from a sequencer 22 in the MRI apparatus. As a result, plural DC high voltage power sources necessary for the multi level PWM inverter is constituted by a comparatively simple circuit, in addition, while suppressing loss in the power sources, a small sized and highly accurate high voltage and large current power source device and a magnetic resonance imaging apparatus using the same are provided.
摘要翻译： 直流高压电源由将商用交流电源（3）的电压转换为直流电压并升压转换的直流电压的交流 - 直流转换装置（4,6）构成，直流 - 交流转换 将由先前装置升压的直流电压转换为交流电压的装置（7），两个绝缘变压器（8,9），其将由先前的转换装置转换的交流电压升高，同时绝缘，并串联DC 在将变压器的输出电压转换为DC并使其平滑化之后获得的电压。 直流高压电源的直流电压用作由三电平的多电平PWM逆变器电路（18）构成的电流放大器（19,20,21）的电源，并且流过X轴，Y轴的电流 和与这些电流放大器连接的MRI装置中的Z轴倾斜磁场线圈（15,16,17），由开关控制装置（18q）控制，以满足电流指令值（22c1,22c2,22c3） 来自MRI装置中的定序器22。 结果，多电平PWM逆变器所需的多个直流高压电源由比较简单的电路构成，另外，在抑制电源的损耗的同时，小型化，高精度的高电压和大电流电源装置 并提供使用该磁共振成像装置的磁共振成像装置。
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8.发明申请公开(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
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。
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公开(公告)号：US20100045113A1
公开(公告)日：2010-02-25
申请号：US11993818
申请日：2006-06-30
申请人： Shingo Hishikawa , Takuya Domoto
发明人： Shingo Hishikawa , Takuya Domoto
IPC分类号： H02J3/00
CPC分类号： H02M7/483 , G01R33/3614 , G01R33/383 , G01R33/3852 , Y10T307/297 , Y10T307/685
摘要： A DC high voltage power source is constituted by an AC-DC converting means (4, 6) that converts a voltage of a commercial AC power source (3) to a DC voltage and steps up the converted DC voltage, a DC-AC converting means (7) that converts the DC voltage stepped up by the previous means to an AC voltage, two insulating transformer (8, 9) that steps up the AC voltage converted by the previous converting means while insulating each others and a series connection of DC voltages obtained after converting the output voltages from the transformers to DCs and smoothing the same. The DC voltage of the DC high voltage power source is used as the power source to current amplifiers (19, 20, 21) constituted by a multi level PWM inverter circuit (18) of 3 levels and the currents flowing through X axis, Y axis and Z axis gradient magnetic field coil (15, 16, 17) in an MRI apparatus connected to these current amplifiers as loads are controlled by a switching control device (18q) so as to meet with current command values (22c1, 22c2, 22c3) from a sequencer 22 in the MRI apparatus. As a result, plural DC high voltage power sources necessary for the multi level PWM inverter is constituted by a comparatively simple circuit, in addition, while suppressing loss in the power sources, a small sized and highly accurate high voltage and large current power source device and a magnetic resonance imaging apparatus using the same are provided.
摘要翻译： 直流高压电源由将商用交流电源（3）的电压转换为直流电压并升压转换的直流电压的交流 - 直流转换装置（4,6）构成，直流 - 交流转换 将由先前装置升压的直流电压转换为交流电压的装置（7），两个绝缘变压器（8,9），其将由先前的转换装置转换的交流电压升高，同时绝缘，并串联DC 在将变压器的输出电压转换为DC并使其平滑化之后获得的电压。 直流高压电源的直流电压用作由三电平的多电平PWM逆变器电路（18）构成的电流放大器（19,20,21）的电源，并且流过X轴，Y轴的电流 和与这些电流放大器连接的MRI装置中的Z轴倾斜磁场线圈（15,16,17），由开关控制装置（18q）控制，以满足电流指令值（22c1,22c2,22c3） 来自MRI装置中的定序器22。 结果，多电平PWM逆变器所需的多个直流高压电源由比较简单的电路构成，另外，在抑制电源的损耗的同时，小型化，高精度的高电压和大电流电源装置 并提供使用该磁共振成像装置的磁共振成像装置。
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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
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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