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公开(公告)号：US06806434B1
公开(公告)日：2004-10-19
申请号：US10296329
申请日：2002-11-22
申请人： Akihiro Suzuki , Akihiko Iwata , Takashi Hashimoto , Yoshikazu Tsunoda , Hideaki Hayashi , Atsushi Taneda
发明人： Akihiro Suzuki , Akihiko Iwata , Takashi Hashimoto , Yoshikazu Tsunoda , Hideaki Hayashi , Atsushi Taneda
IPC分类号： B23H102
CPC分类号： B23H1/022 , B23H2300/22
摘要： An electric discharge machine in which electric power for working is supplied between an electrode and workpiece by an electric power unit so as to generate electric discharge between the electrode and workpiece and conduct machining on the workpiece, the electric discharge machine having a voltage detector for detecting output voltage V of a DC electric power source of the electric power unit; a current detector for detecting output current I of the DC electric power source of the electric power unit; a calculator for calculating product V·I of V and I; and a controller for controlling output electric power of the electric power unit to be constant on the basis of a difference between a working command signal for giving a predetermined electric power command and V·I. Even when load impedance fluctuates, it is possible to suppress the fluctuation of electric discharge power, so that surface roughness on a machined face of the workpiece can be made uniform.
摘要翻译： 一种放电机，其中通过电力单元在电极和工件之间供应用于工作的电力，以在电极和工件之间产生放电并对工件进行加工，该放电机具有用于检测的电压检测器 电力单元的直流电源的输出电压V; 电流检测器，用于检测电力单元的直流电源的输出电流I; 用于计算V和I的乘积V.I的计算器; 以及控制器，用于基于用于给出预定电力指令的工作指令信号和V.I之间的差来控制电力单元的输出功率恒定。 即使负载阻抗波动，也可以抑制放电功率的波动，能够使加工面上的表面粗糙度均匀。
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2.发明授权公开(公告)号：US06630641B2
公开(公告)日：2003-10-07
申请号：US09848344
申请日：2001-05-04
IPC分类号： B23H102
CPC分类号： B23H1/022 , B23H2300/20
摘要： An electric discharge machining apparatus includes a wire electrode for machining a workpiece, and a first voltage applying unit for applying a voltage pulse. The voltage pulse has a rise time longer than a discharge formative time lag when a rectangular voltage pulse is applied, when a distance between the workpiece and the wire is an average value in machining, and rises to the same voltage as the rectangular voltage pulse.
摘要翻译： 放电加工装置包括用于加工工件的线电极和用于施加电压脉冲的第一施加电压单元。 当施加矩形电压脉冲时，当工件和线之间的距离是加工中的平均值时，电压脉冲具有比放电形成时滞更长的上升时间，并且上升到与矩形电压脉冲相同的电压。
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3.发明授权公开(公告)号：US06580048B2
公开(公告)日：2003-06-17
申请号：US09847359
申请日：2001-05-03
申请人： Takashi Hashimoto , Akihiro Suzuki , Taichirou Tamida , Akihiko Iwata , Yoshikazu Tsunoda , Hiroyuki Ooguro , Yoshikazu Ukai
发明人： Takashi Hashimoto , Akihiro Suzuki , Taichirou Tamida , Akihiko Iwata , Yoshikazu Tsunoda , Hiroyuki Ooguro , Yoshikazu Ukai
IPC分类号： B23H102
CPC分类号： B23H1/022 , B23H2300/20 , B23H2300/22
摘要： Charge accumulated in a capacitor is used to provide a processing current flow between a target and an electrode. When a diode is turned on, a first dc power supply is used to provide the processing current flow between the target and the electrode. In this state, after a lapse of a predetermined time, the current supply using the first dc power supply is stopped, and an induced electromotive voltage, induced by two floating reactors, is used to rapidly drop the processing current flowing between the target and the electrode, while charging the capacitor.
摘要翻译： 电容器中累积的电荷用于提供目标和电极之间的处理电流。 当二极管接通时，使用第一直流电源来提供目标和电极之间的处理电流。 在这种状态下，在经过预定时间后，停止使用第一直流电源的电流供应，并且使用由两个浮动电抗器引起的感应电动势来迅速地降低在目标和 电极，同时给电容充电。
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公开(公告)号：US20070223256A1
公开(公告)日：2007-09-27
申请号：US11587302
申请日：2004-04-21
IPC分类号： H02M5/40
CPC分类号： H02M7/53871 , H02M2007/4815 , Y02B70/1441
摘要： The present invention provides a power device including a converter part (2) for converting an AC voltage to a DC voltage; an inverter part (3) for converting the DC voltage outputted from the converter part (2) to the AC voltage; and a transformer (4) having an inductance forming a series resonance circuit together with an electrostatic capacity of a load (20) to boost the AC voltage outputted from the inverter part (3). In the power device, an inductance (7) is connected to the output part of the inverter part (3) in parallel with the transformer (4). Thus, in a discharge part 6 provided in the load (20), since when a discharge is not generated, a recovery current is not supplied to a circulating current diode in the inverter part (3), or the quantity of the recovery current is reduced, the heat generation of the circulating current diode can be suppressed without increasing the number of elements of the circulating current diode.
摘要翻译： 本发明提供了一种功率器件，包括用于将AC电压转换为DC电压的转换器部分（2）; 用于将从转换器部分（2）输出的DC电压转换为AC电压的逆变器部分（3）; 以及变压器（4），其具有形成串联谐振电路的电感以及负载（20）的静电电容，以升高从逆变器部分（3）输出的交流电压。 在功率器件中，电感（7）与变压器（4）并联连接到逆变器部分（3）的输出部分。 因此，在设置在负载（20）中的放电部6中，由于在不产生放电的情况下，在逆变器部（3）中不向循环电流二极管供给恢复电流，或者恢复电流的量为 减少，可以抑制循环电流二极管的发热，而不增加循环电流二极管的元件数量。
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5.发明授权公开(公告)号：US07957164B2
公开(公告)日：2011-06-07
申请号：US11587302
申请日：2004-04-21
IPC分类号： H02M5/40
CPC分类号： H02M7/53871 , H02M2007/4815 , Y02B70/1441
摘要： The present invention provides a power device including a converter part (2) for converting an AC voltage to a DC voltage; an inverter part (3) for converting the DC voltage outputted from the converter part (2) to the AC voltage; and a transformer (4) having an inductance forming a series resonance circuit together with an electrostatic capacity of a load (20) to boost the AC voltage outputted from the inverter part (3). In the power device, an inductance (7) is connected to the output part of the inverter part (3) in parallel with the transformer (4). Thus, in a discharge part 6 provided in the load (20), since when a discharge is not generated, a recovery current is not supplied to a circulating current diode in the inverter part (3), or the quantity of the recovery current is reduced, the heat generation of the circulating current diode can be suppressed without increasing the number of elements of the circulating current diode.
摘要翻译： 本发明提供了一种功率器件，包括用于将AC电压转换为DC电压的转换器部分（2）; 用于将从转换器部分（2）输出的DC电压转换为AC电压的逆变器部分（3）; 以及变压器（4），其具有形成串联谐振电路的电感以及负载（20）的静电电容，以升高从逆变器部分（3）输出的交流电压。 在功率器件中，电感（7）与变压器（4）并联连接到逆变器部分（3）的输出部分。 因此，在设置在负载（20）中的放电部6中，由于在不产生放电的情况下，在逆变器部（3）中不向循环电流二极管供给恢复电流，或者恢复电流的量为 减少，可以抑制循环电流二极管的发热，而不增加循环电流二极管的元件数量。
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公开(公告)号：USRE40528E1
公开(公告)日：2008-10-07
申请号：US11590899
申请日：2006-11-01
申请人： Akihiko Iwata , Akihiro Suzuki , Hiroyuki Sasao , Kenichi Koyama , Toshiyuki Kikunaga , Mitsugu Takahashi
发明人： Akihiko Iwata , Akihiro Suzuki , Hiroyuki Sasao , Kenichi Koyama , Toshiyuki Kikunaga , Mitsugu Takahashi
CPC分类号： H02M1/15 , H02J3/1807 , H02M1/12 , H02M5/2576 , H02M2001/0093 , Y02E40/30 , Y10T307/516 , Y10T307/527
摘要： Voltage compensating circuits are connected serially to a power system, including capacitors each having different charging voltages (in relationship of approximately 2k (K=0, 1, 2, . . . ) times the smallest charging voltage value). The voltage compensating circuits convert DC voltages in the capacitors into AC voltages and output the AC voltages, respectively. The voltages of the capacitors are detected as detected values V1 to V3. The detected values V1 to V3 are used as bit signals for a reference value to check a voltage dip amount of the power system with the reference value and to convert the voltage dip amount into a binary signal. A combination is selected from the voltage compensating circuits in accordance with the binary signal so that the sum of output voltages of the selected voltage compensating circuits compensates the voltage dip of the power system.
摘要翻译： 电压补偿电路串联连接到电力系统，包括电容器，每个电容器具有不同的充电电压（约2KΩ的关系（K = 0,1,2，...）倍的最小充电电压 值）。 电压补偿电路将电容器中的直流电压转换成交流电压，分别输出交流电压。 电容器的电压被检测为检测值V 1至V 3。检测值V 1至V 3用作参考值的位信号，以用参考值检查电力系统的电压下降量，并转换 将电压倾入量转换为二进制信号。 根据二进制信号从电压补偿电路中选择组合，使得所选择的电压补偿电路的输出电压之和补偿电力系统的电压下降。
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公开(公告)号：US06660957B1
公开(公告)日：2003-12-09
申请号：US09958649
申请日：2001-10-11
申请人： Hiroyuki Ohguro , Seiji Satou , Akihiko Iwata , Akihiro Suzuki
发明人： Hiroyuki Ohguro , Seiji Satou , Akihiko Iwata , Akihiro Suzuki
IPC分类号： B23H102
CPC分类号： B23H1/022 , B23H2300/20
摘要： A power supply apparatus for electric discharge machining is provided with a current loop including a diode, which is supplied with a forward current at the same time a voltage for generating a discharge is output or before it; and a resistor. Supply of forward current to the diode is blocked the moment a discharge is generated. By doing so, a reverse recovery current of the diode is supplied in a gap between an electrode and a workpiece to be machined.
摘要翻译： 用于放电加工的电源装置设置有包括二极管的电流回路，该二极管同时被供给正向电流，用于产生放电的电压被输出或在其之前; 和电阻。 向二极管提供正向电流在产生放电的时刻被阻止。 通过这样做，二极管的反向恢复电流被提供在电极和待加工的工件之间的间隙中。
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公开(公告)号：US07009828B2
公开(公告)日：2006-03-07
申请号：US10463813
申请日：2003-06-18
申请人： Hiroshi Ito , Akihiko Iwata , Akihiro Suzuki
发明人： Hiroshi Ito , Akihiko Iwata , Akihiro Suzuki
IPC分类号： H02H3/20
CPC分类号： H03K17/08144 , H02M1/08 , H03K17/105
摘要： Self-quenching switching elements are connected in series in a semiconductor switching device. Snubber circuits including a diode, a capacitor, and a non-linear circuit are connected in parallel with the respective semiconductor switching elements. In the snubber circuit, the diode and the capacitor are connected in series, and the non-linear circuit is connected in parallel with the capacitor. The non-linear circuit includes an impedance element, a Zener diode, and a controlling semiconductor element and draws current through the controlling semiconductor element when applied voltage exceeds the Zener voltage of the Zener diode. The Zener voltage is larger than a divided voltage applied to the semiconductor element during a fault in a power system.
摘要翻译： 自熄型开关元件串联连接在半导体开关器件中。 包括二极管，电容器和非线性电路的缓冲电路与各个半导体开关元件并联连接。 在缓冲电路中，二极管和电容器串联连接，非线性电路与电容并联。 当施加的电压超过齐纳二极管的齐纳电压时，非线性电路包括阻抗元件，齐纳二极管和控制半导体元件，并且通过控制半导体元件吸取电流。 在电力系统的故障期间，齐纳电压大于施加到半导体元件的分压。
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公开(公告)号：US06956305B2
公开(公告)日：2005-10-18
申请号：US10109044
申请日：2002-03-29
申请人： Akihiko Iwata , Akihiro Suzuki , Hiroyuki Sasao , Kenichi Koyama , Toshiyuki Kikunaga , Mitsugu Takahasi
发明人： Akihiko Iwata , Akihiro Suzuki , Hiroyuki Sasao , Kenichi Koyama , Toshiyuki Kikunaga , Mitsugu Takahasi
CPC分类号： H02M1/15 , H02J3/1807 , H02M1/12 , H02M5/2576 , H02M2001/0093 , Y02E40/30 , Y10T307/516 , Y10T307/527
摘要： Voltage compensation circuits connect DC voltages accumulated in capacitors having respectively different charging voltages which are 2K (where K=0, 1, 2, . . . ) times the minimum voltage into AC voltages. The voltage compensation circuits are connected in series to an electric power system in series. When the voltage dip occurs in an electric power system, a combination of voltage compensation circuits is selected from the voltage compensation circuits. The sum of the output voltage compensates the voltage dip. During normal operation, a high speed mechanical short circuit switch by-passes the voltage compensation circuits to reduce power loss.
摘要翻译： 电压补偿电路连接累积在具有不同充电电压的电容器中的直流电压
它们是2 K（其中K = 0,1,2，...）次 最小电压进入交流电压。 电压补偿电路串联连接电力系统。 当在电力系统中发生电压骤降时，从电压补偿电路中选择电压补偿电路的组合。 输出电压的总和补偿电压下降。 在正常工作期间，高速机械短路开关旁路电压补偿电路以减少功率损耗。
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公开(公告)号：US20050041348A1
公开(公告)日：2005-02-24
申请号：US10952880
申请日：2004-09-30
申请人： Hiroshi Ito , Akihiko Iwata , Akihiro Suzuki
发明人： Hiroshi Ito , Akihiko Iwata , Akihiro Suzuki
IPC分类号： H02H9/04 , H02H7/12 , H02H7/20 , H02M1/00 , H02M1/08 , H03K17/0814 , H03K17/16 , H03K17/56 , H02H9/00
CPC分类号： H03K17/08144 , H02M1/08 , H03K17/105
摘要： Self-quenching switching elements are connected in series in a semiconductor switching device. Snubber circuits including a diode, a capacitors, and a non-linear circuit are connected in parallel with the respective semiconductor switching elements. In the snubber circuit, the diode and the capacitor are connected in series, and the non-linear circuit is connected in parallel with the capacitor. The non-linear circuit includes an impedance element, a Zener diode, and a controlling semiconductor element and draws current through the controlling semiconductor element when applied voltage exceeds the Zener voltage of the Zener diode. The Zener voltage is larger than a divided voltage applied to the semiconductor element during a fault in a power system.
摘要翻译： 自熄型开关元件串联连接在半导体开关器件中。 包括二极管，电容器和非线性电路的缓冲电路与各个半导体开关元件并联连接。 在缓冲电路中，二极管和电容器串联连接，非线性电路与电容并联。 当施加的电压超过齐纳二极管的齐纳电压时，非线性电路包括阻抗元件，齐纳二极管和控制半导体元件，并且通过控制半导体元件吸取电流。 在电力系统的故障期间，齐纳电压大于施加到半导体元件的分压。
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