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11. 发明授权

US07075032B2 Power supply apparatus 有权
标题翻译：电源设备
公开(公告)号：US07075032B2
公开(公告)日：2006-07-11
申请号：US10718905
申请日：2003-11-21
申请人： Kunio Karino , Toshikazu Fujiyoshi , Kenzo Danjo , Hideo Ishii
发明人： Kunio Karino , Toshikazu Fujiyoshi , Kenzo Danjo , Hideo Ishii
IPC分类号： B23K9/10
CPC分类号： B23K9/092 , B23K9/093 , B23K9/1062
摘要： An input-side rectifier (4), a smoothing capacitor (6), an inverter (8), a transformer (10) and an output-side rectifier (12) operate together to convert an AC voltage supplied from an AC power supply to a DC voltage. The DC voltage is coupled through a DC-to-AC converter (16) to a workpiece (18) and a torch (20). An auxiliary voltage supply (28) supplies the workpiece (18) and the torch (20) with a negative voltage for a short time following the transition of the AC voltage supplied to the workpiece (18) and the torch (20) from positive to negative. The negative voltage has a negative peak value larger than the negative peak value of the AC voltage supplied to the workpiece (18) and the torch (20), and rapidly changes from the negative peak value. The auxiliary voltage supply (28) produces a DC voltage having a negative peak value larger than the negative peak value of the AC voltage supplied to the workpiece (18) and the torch (20), by means of a transformer (30), a rectifier (32) and a smoothing capacitor (36). The smoothing capacitor (36) is coupled to the workpiece (18) and the torch (20) through a transistor (38) and a current-limiting resistor (40). A differentiating circuit (46) is coupled in parallel with the current-limiting resistor (40), and includes a resistor (48) having a smaller resistance value than the current-limiting resistor (40).
摘要翻译：输入侧整流器（4），平滑电容器（6），逆变器（8），变压器（10）和输出侧整流器（12）一起工作，将从AC电源供给的AC电压转换为直流电压。 DC电压通过DC-AC转换器（16）耦合到工件（18）和焊炬（20）。辅助电源（28）在提供给工件（18）和割炬（20）的交流电压从正到负极转换到短时间之后，向工件（18）和割炬（20）提供负电压负。负电压具有大于提供给工件（18）和割炬（20）的AC电压的负峰值的负峰值，并且从负峰值迅速变化。辅助电源（28）通过变压器（30）产生具有大于提供给工件（18）和割炬（20）的交流电压的负峰值的负峰值的直流电压，整流器（32）和平滑电容器（36）。平滑电容器（36）通过晶体管（38）和限流电阻（40）耦合到工件（18）和割炬（20）。微分电路（46）与限流电阻（40）并联耦合，并且包括具有比限流电阻（40）更小的电阻值的电阻器（48）。

12. 发明授权

US5926381A DC power supply apparatus 有权
标题翻译：直流电源装置
公开(公告)号：US5926381A
公开(公告)日：1999-07-20
申请号：US159485
申请日：1998-09-23
申请人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
发明人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
IPC分类号： H02M3/28 , H02M3/335 , H02M7/25 , H02M7/5387
CPC分类号： H02M7/5387 , H02M7/25
摘要： A DC power supply apparatus includes an input-side rectifier which rectifies an input AC voltage and supplies the rectified voltage to a voltage-boosting converter. The voltage-boosting converter converts the supplied voltage to a voltage of a predetermined magnitude. The predetermined magnitude voltage is, then, converted to a high-frequency voltage by an inverter and applied to a primary winding of a transformer. An output-side rectifier rectifies a high-frequency voltage induced in a secondary winding of the transformer. The inverter includes IGBTs and diodes, which are connected in a full-bridge configuration. A capacitor is connected in parallel with each IGBT. When the IGBTs are rendered conductive by the charging and discharging of the capacitors, no current flows through the IGBTs, and when the IGBTs are rendered nonconductive, the voltages applied to the IGBTs are made to become zero.
摘要翻译：直流电源装置包括输入侧整流器，其对输入的交流电压进行整流，并将整流的电压提供给升压转换器。升压转换器将所提供的电压转换成预定大小的电压。然后，通过逆变器将预定的幅度电压转换成高频电压并施加到变压器的初级绕组。输出侧整流器对变压器次级绕组感应的高频电压进行整流。逆变器包括以全桥配置连接的IGBT和二极管。电容器与每个IGBT并联连接。当通过电容器的充放电导致IGBT导通时，IGBT中不会流过电流，当IGBT变为不导通时，施加于IGBT的电压为零。

13. 发明授权

US5930122A Inverter and DC power supply apparatus with inverter used therein 有权
标题翻译：其中使用逆变器和直流电源设备
公开(公告)号：US5930122A
公开(公告)日：1999-07-27
申请号：US152017
申请日：1998-09-11
申请人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
发明人： Haruo Moriguchi , Toru Arai , Toshikazu Fujiyoshi , Masayuki Ono , Satoshi Hamada , Hideo Ishii
IPC分类号： H02M1/10 , H02M3/28 , H02M3/335 , H02M7/48 , H02M7/5387 , H02M3/24
CPC分类号： H02M3/285 , H02M1/10 , H02M3/33569 , H02M2001/0074
摘要： An inverter includes a series circuit of two current conducting units connected between two input terminals adapted to be connected to a DC power supply. Two first capacitors are connected in series between the two input terminals. A primary winding of a transformer is connected between the junction of the current conducting units and the junction of the first capacitors. Each of the current conducting units includes a parallel circuit of an IGBT, a diode and a second capacitor. The IGBT has a collector, an emitter and a gate and is rendered conductive when a control signal is applied to the gate while a voltage of a predetermined polarity is applied between the collector and the emitter. The diode is connected in inverse parallel with the IGBT. An inverter control circuit applies alternately the control signals to the respective IGBTs with a predetermined quiescent period disposed between the respective control signals applied.
摘要翻译：逆变器包括连接在适于连接到直流电源的两个输入端之间的两个导电单元的串联电路。两个第一电容器串联连接在两个输入端子之间。变压器的初级绕组连接在电流传导单元的接头和第一电容器的接点之间。每个电流传导单元包括IGBT，二极管和第二电容器的并联电路。 IGBT具有集电极，发射极和栅极，并且当在集电极和发射极之间施加预定极性的电压时，控制信号施加到栅极时导通。二极管与IGBT反向并联连接。逆变器控制电路将控制信号交替地施加到各个IGBT，其中预定的静态周期设置在施加的各个控制信号之间。

14. 发明授权

US06069811A DC power supply apparatus 有权
标题翻译：直流电源装置
公开(公告)号：US06069811A
公开(公告)日：2000-05-30
申请号：US212159
申请日：1998-12-15
申请人： Haruo Moriguchi , Toru Arai , Tetsuro Ikeda , Toshikazu Fujiyoshi , Masayuki Ono , Hideo Ishii
发明人： Haruo Moriguchi , Toru Arai , Tetsuro Ikeda , Toshikazu Fujiyoshi , Masayuki Ono , Hideo Ishii
IPC分类号： B23K9/073 , H02H7/125 , H02H9/00 , H02M1/08 , H02M3/155 , H02M3/28 , H02M3/337 , H02M7/12 , H02M7/217 , H02M1/10
CPC分类号： H02M1/4225 , H02H7/1257 , H02M3/337 , H02H9/001 , H02M1/32 , H02M1/36
摘要： A DC power supply apparatus includes a rectifier circuit which rectifies an input commercial AC voltage. The rectifier output voltage is smoothed in a smoothing capacitor. The DC voltage from the capacitor is converted to a high-frequency voltage in an inverter. The high-frequency voltage from the inverter is voltage-transformed by a transformer into a voltage-transformed, high-frequency voltage, which is then converted back into a DC voltage in a high-frequency-to-DC converter circuit. When an input commercial AC voltage is applied to the DC power supply apparatus, a pre-charging circuit pre-charges the smoothing capacitor from the input AC voltage. If a voltage having a magnitude larger than a prescribed value is applied to the DC power supply apparatus, an overvoltage protection circuit renders the rectifier circuit and the pre-charging circuit inoperative.
摘要翻译：直流电源装置包括整流电路，其对输入的商用交流电压进行整流。整流器输出电压在平滑电容器中平滑化。来自电容器的直流电压在逆变器中转换成高频电压。来自变频器的高频电压由变压器电压转换为电压变换的高频电压，然后将其转换回高频至直流转换电路中的直流电压。当输入商用交流电压被施加到直流电源装置时，预充电电路从输入的交流电压对平滑电容器进行预充电。如果将具有大于规定值的电压的电压施加到直流电源装置，则过电压保护电路使整流电路和预充电电路不起作用。

15. 发明授权

US08363432B2 DC-DC converter circuit 有权
标题翻译： DC-DC转换器电路
公开(公告)号：US08363432B2
公开(公告)日：2013-01-29
申请号：US13063070
申请日：2009-12-16
申请人： Hajime Katsushima , Toshikazu Fujiyoshi , Kenji Morimoto , Hajime Yamamoto , Satoshi Yamamura
发明人： Hajime Katsushima , Toshikazu Fujiyoshi , Kenji Morimoto , Hajime Yamamoto , Satoshi Yamamura
IPC分类号： H02M3/335 , H02M7/538
CPC分类号： H02M3/3384 , H02M3/3372 , H02M2001/342 , Y02B70/1491
摘要： This DC-DC converter circuit includes: first and second switching elements (S1, S2); an output transformer (T) that includes a first primary winding (P1) connected in series between the positive electrode sides of the first and second switching elements (S1, S2), a second primary winding (P2) connected in series between their negative electrode sides, a secondary winding (S) for obtaining an output voltage, and tertiary windings (n3, n4); a first voltage source (C1), connected between a first connection point at which the first primary winding (P1) is connected to the second switching element (S2) and the first switching element (S1), that applies a voltage to the first switching element via the first primary winding; a second voltage source (C2) connected to locations symmetric with those of the first voltage source (C1); and a control unit (CT) that turns the first and second switching elements (S1, S2) alternatingly ON and OFF, and first and second regeneration snubber circuits (SN1, SN2) for regenerating the charge in snubber capacitors (C3, C4) to the voltage sources (C1, C2); and these regeneration snubber circuits (SN1, SN2) include third and fourth switching elements (S3, S4) driven by the output voltages of the tertiary windings (n3, n4).
摘要翻译：该DC-DC转换器电路包括：第一和第二开关元件（S1，S2）; 输出变压器（T），包括串联连接在第一和第二开关元件（S1，S2）的正极侧之间的第一初级绕组（P1），串联连接在它们的负极侧面，用于获得输出电压的次级绕组（S）和三次绕组（n3，n4）; 连接在第一初级绕组（P1）与第二开关元件（S2）连接的第一连接点和第一开关元件（S1）之间的第一电压源（C1），其向第一开关施加电压元件经由第一初级绕组; 连接到与第一电压源（C1）对称的位置的第二电压源（C2）; 以及将第一和第二开关元件（S1，S2）交替地导通和截止的控制单元（CT），以及用于将缓冲电容器（C3，C4）中的电荷再生的第一和第二再生缓冲电路（SN1，SN2）至电压源（C1，C2）; 这些再生缓冲电路（SN1，SN2）包括由三级绕组（n3，n4）的输出电压驱动的第三和第四开关元件（S3，S4）。

16. 发明授权

US08094470B2 Current balanced push-pull inverter circuit with snubber and discharge circuitry 有权
标题翻译：具有缓冲和放电电路的电流平衡推挽逆变电路
公开(公告)号：US08094470B2
公开(公告)日：2012-01-10
申请号：US12864271
申请日：2009-03-10
申请人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
发明人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
IPC分类号： H02M3/335 , H02M7/538
CPC分类号： H02M3/3372 , H02M2001/348
摘要： This current balanced push-pull type inverter circuit includes first and second switching elements, and an output transformer which includes a first primary winding and a second primary winding connected in series between said first and second switching elements, and also includes a secondary winding for obtaining an output voltage. This inverter circuit also includes a first voltage supply capacitor, a second voltage supply capacitor, and a control unit. A first snubber circuit, in which a first free wheel diode and first and second snubber capacitors are connected in series, is connected in inverse parallel to the first switching element. A first discharge resistor is connected between the first snubber capacitor and a first power supply capacitor, and a second discharge resistor is connected between the second snubber capacitor and a third power supply capacitor. And a second snubber circuit and discharge resistors are connected to the second switching element as well, in a similar manner.
摘要翻译：该电流平衡推挽型逆变器电路包括第一和第二开关元件，以及包括在所述第一和第二开关元件之间串联连接的第一初级绕组和第二初级绕组的输出变压器，还包括用于获得输出电压。该逆变器电路还包括第一电压供应电容器，第二电压供应电容器和控制单元。其中第一自由轮二极管和第一和第二缓冲电容器串联连接的第一缓冲电路与第一开关元件反向并联连接。第一放电电阻器连接在第一缓冲电容器和第一电源电容器之间，第二放电电阻器连接在第二缓冲电容器和第三电源电容器之间。并且第二缓冲电路和放电电阻也以类似的方式连接到第二开关元件。

17. 发明申请

US20110216557A1 INVERTER CIRCUIT 有权
标题翻译：逆变器电路
公开(公告)号：US20110216557A1
公开(公告)日：2011-09-08
申请号：US12740432
申请日：2009-02-06
申请人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
发明人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
IPC分类号： H02M3/335
CPC分类号： H02M1/34 , H02M7/538 , H02M2001/342 , Y02B70/1491
摘要： This inverter circuit includes first and second switching elements and an output transformer which is provided with a first primary winding connected in series between said first and second switching elements, and also with a secondary winding for obtaining an output voltage. The inverter circuit is further provided with a first voltage supply, a second voltage supply, and a control unit. The first voltage supply applies voltage to said first switching element via said first primary winding. And the second voltage supply applies voltage to said second switching element via said second primary winding. The control unit turns said first switching element and said second switching element alternatingly ON and OFF. This inverter circuit also includes first and second regeneration snubber circuits for regenerating the charge charged into snubber capacitors.
摘要翻译：该逆变器电路包括第一和第二开关元件和输出变压器，输出变压器设置有串联连接在所述第一和第二开关元件之间的第一初级绕组，并且还具有用于获得输出电压的次级绕组。逆变器电路还设置有第一电压源，第二电压源和控制单元。第一电压源经由所述第一初级绕组向所述第一开关元件施加电压。并且第二电压源经由所述第二初级绕组将电压施加到所述第二开关元件。控制单元将所述第一开关元件和所述第二开关元件交替地接通和断开。该逆变器电路还包括用于再生充入缓冲电容器的电荷的第一和第二再生缓冲电路。

18. 发明授权

US08873259B2 DC-DC converter including regeneration snubber circuit 有权
标题翻译： DC-DC转换器包括再生缓冲电路
公开(公告)号：US08873259B2
公开(公告)日：2014-10-28
申请号：US12680240
申请日：2009-02-25
申请人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
发明人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
IPC分类号： H02H7/122 , H02M1/34 , H02M3/335
CPC分类号： H02M3/33569 , H02M1/34 , H02M2001/342 , Y02B70/1491
摘要： A DC-DC converter includes a regeneration snubber circuit. The snubber circuit is connected in parallel with the secondary diode circuit and includes a series circuit of a discharge blocking diode, a snubber capacitor, and a switching element for regeneration connected in parallel with the discharge blocking diode. The DC-DC converter further includes a control unit which turns the switching element for regeneration on a predetermined time period after the timing of turning the primary side switching element off. The predetermined time period is set to approximately the time period during which the charge, accumulated in the snubber capacitor due to reverse recovery time when one of the secondary diodes has been turned off, discharges.
摘要翻译： DC-DC转换器包括再生缓冲电路。缓冲电路与次级二极管电路并联连接，并且包括放电阻塞二极管，缓冲电容器和用于与放电阻塞二极管并联连接的再生开关元件的串联电路。 DC-DC转换器还包括一个控制单元，该控制单元在关闭初级侧开关元件的定时之后的预定时间段内转动用于再生的开关元件。预定时间周期被设定为近似于当二次二极管中的一个被截止时由于反向恢复时间而累积在缓冲电容器中的电荷放电的时间周期。

19. 发明授权

US08107265B2 Current balanced push-pull inverter circuit with regeneration snubber circuit and voltage boost section 有权
标题翻译：具有再生缓冲电路和升压段的电流平衡推挽逆变电路
公开(公告)号：US08107265B2
公开(公告)日：2012-01-31
申请号：US12864267
申请日：2009-01-30
申请人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
发明人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
IPC分类号： H02M3/335 , H02M7/538
CPC分类号： H02M3/3372 , H02M2001/346 , Y02B70/1491 , Y10T307/50
摘要： This inverter circuit includes two switching elements which are turned alternately ON and OFF, and a first primary winding connected in series between these switching elements, and also includes an output transformer having a secondary winding for obtaining an output voltage. This inverter circuit also includes a first voltage source and a second voltage source. The first voltage source applies a voltage to the first switching element via the first primary winding. And the second voltage source applies a voltage to the second switching element via the second primary winding. This inverter circuit also includes a regeneration snubber circuit for regenerating charge accumulated in a snubber capacitor. The regeneration snubber circuit includes a regeneration circuit including a voltage boost section which converts the primary side voltage of the output transformer to a predetermined voltage, which it outputs.
摘要翻译：该逆变器电路包括交替地接通和断开的两个开关元件和串联连接在这些开关元件之间的第一初级绕组，并且还包括具有用于获得输出电压的次级绕组的输出变压器。该逆变器电路还包括第一电压源和第二电压源。第一电压源经由第一初级绕组向第一开关元件施加电压。并且第二电压源经由第二初级绕组向第二开关元件施加电压。该逆变器电路还包括用于再生堆积在缓冲电容器中的电荷的再生缓冲电路。再生缓冲电路包括：再生电路，其包括将输出变压器的初级侧电压转换为预定电压的升压部，其输出。

20. 发明申请

US20110058395A1 INVERTER CIRCUIT 有权
标题翻译：逆变器电路
公开(公告)号：US20110058395A1
公开(公告)日：2011-03-10
申请号：US12864271
申请日：2009-03-10
申请人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
发明人： Toshikazu Fujiyoshi , Hajime Katsushima , Kenji Morimoto , Satoshi Yamamura
IPC分类号： H02M3/335
CPC分类号： H02M3/3372 , H02M2001/348
摘要： This current balanced push-pull type inverter circuit includes first and second switching elements, and an output transformer which includes a first primary winding and a second primary winding connected in series between said first and second switching elements, and also includes a secondary winding for obtaining an output voltage. This inverter circuit also includes a first voltage supply capacitor, a second voltage supply capacitor, and a control unit. A first snubber circuit, in which a first free wheel diode and first and second snubber capacitors are connected in series, is connected in inverse parallel to the first switching element. A first discharge resistor is connected between the first snubber capacitor and a first power supply capacitor, and a second discharge resistor is connected between the second snubber capacitor and a third power supply capacitor. And a second snubber circuit and discharge resistors are connected to the second switching element as well, in a similar manner.
摘要翻译：该电流平衡推挽型逆变器电路包括第一和第二开关元件，以及包括在所述第一和第二开关元件之间串联连接的第一初级绕组和第二初级绕组的输出变压器，还包括用于获得输出电压。该逆变器电路还包括第一电压供应电容器，第二电压供应电容器和控制单元。其中第一自由轮二极管和第一和第二缓冲电容器串联连接的第一缓冲电路与第一开关元件反向并联连接。第一放电电阻器连接在第一缓冲电容器和第一电源电容器之间，第二放电电阻器连接在第二缓冲电容器和第三电源电容器之间。并且第二缓冲电路和放电电阻也以类似的方式连接到第二开关元件。

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