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51. 发明授权

US07719865B2 Power conversion apparatus 有权
标题翻译：电力转换装置
公开(公告)号：US07719865B2
公开(公告)日：2010-05-18
申请号：US11816456
申请日：2006-02-21
申请人： Akihiko Iwata , Makoto Seto , Masaki Yamada , Shigeki Harada , Noriyuki Matsubara , Takashi Kumagai
发明人： Akihiko Iwata , Makoto Seto , Masaki Yamada , Shigeki Harada , Noriyuki Matsubara , Takashi Kumagai
IPC分类号： H02M7/49
CPC分类号： H02J3/383 , H02M7/483 , H02M2001/007 , H02M2001/0077 , Y02E10/563
摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, power loss is reduced and efficiency is improved. An inverter unit, in which AC sides of three single-phase inverters receive DC power from respective sources with a voltage ratio of 1:3:9 as respective inputs are connected in series. Gradational output voltage control of an output voltage is carried out using the sum of the respective generated AC voltages. Also, a solar light voltage is boosted by a chopper circuit to generate the highest voltage DC power source. When the solar light voltage exceeds a predetermined voltage, the boosting of the chopper circuit is stopped, thereby reducing power loss due to the boosting.
摘要翻译：在提高太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，降低功率损耗并提高效率。三相单相逆变器的AC侧以相互输入的电压比为1：3：9的各个电源的DC电源串联连接的逆变器单元。使用各自产生的AC电压的和来执行输出电压的等级输出电压控制。此外，太阳能光伏电压由斩波电路升压以产生最高电压的直流电源。当太阳光电压超过预定电压时，斩波电路的升压停止，由此降低由于升压引起的功率损耗。

52. 发明申请

US20100052598A1 POWER REGENERATIVE CONVERTER 有权
标题翻译：功率再生转换器
公开(公告)号：US20100052598A1
公开(公告)日：2010-03-04
申请号：US12524316
申请日：2007-04-10
申请人： Yoshitomo Hayashi , Akihiko Iwata
发明人： Yoshitomo Hayashi , Akihiko Iwata
IPC分类号： H02P3/18
CPC分类号： H02P27/06 , H02M7/797 , H02P9/006 , H02P29/0241
摘要： There are provided a smoothing capacitor (71) for storing an induced electromotive force generated by a three-phase induction motor (5), a regenerative transistor (81 to 86) for switching a terminal voltage of the smoothing capacitor to carry out a power regenerating operation over a three-phase AC power supply (3), a line voltage detecting portion (6) for detecting a line voltage of the three-phase AC power supply, a fundamental waveform generating portion (10) for generating, from a signal output from the line voltage detecting portion, a fundamental waveform defined to be a line voltage waveform of the three-phase AC power supply in which a source voltage distortion component is not mixed, a base driving signal creating portion (7) for creating a base driving signal to be used for an ON/OFF control of the regenerative transistor based on a signal output from the fundamental waveform generating portion, and a base driving signal output portion (9) for outputting the base driving signal.
摘要翻译：提供一种用于存储由三相感应电动机（5）产生的感应电动势的平滑电容器（71），用于切换平滑电容器的端电压的再生晶体管（81至86），以执行电力再生通过三相交流电源（3），用于检测三相交流电源线路电压的线路电压检测部分（6），从信号输出端产生的基波形成部分（10）来自线电压检测部分的基本波形被定义为不混合源电压失真分量的三相AC电源的线电压波形，用于产生基极驱动的基极驱动信号产生部分（7）信号用于根据从基波形成部分输出的信号进行再生晶体管的ON / OFF控制;以及基本驱动信号输出部（9），用于输出基本驱动符号 al。

53. 发明申请

US20100014335A1 THREE-PHASE POWER CONVERTING APPARATUS 有权
标题翻译：三相电源转换器
公开(公告)号：US20100014335A1
公开(公告)日：2010-01-21
申请号：US12527709
申请日：2008-02-20
申请人： Akihiko Iwata , Hiroshi Ito , Hirofumi Akagi , Hideaki Fujita , Takushi Jimichi
发明人： Akihiko Iwata , Hiroshi Ito , Hirofumi Akagi , Hideaki Fujita , Takushi Jimichi
IPC分类号： H02M7/5387
CPC分类号： H02J3/383 , H02M7/49 , H02M7/53875 , Y02E10/563
摘要： A three-phase inverter circuit (4) of which DC portion is smoothing capacitors (3) connected between output terminals of a solar battery (1) and single-phase inverters (5a-5c) connected in series with AC output lines of the three-phase inverter circuit (4) together constitute an inverter section, and this inverter section is connected to a three-phase power system (2). The three-phase inverter circuit (4) outputs a reverse-polarity voltage pulse (10ua) during a period within each of basic voltage pulses of which pulsewidth corresponds to a half cycle every half cycle of a system voltage. A power burden born by the individual single-phase inverters (5a-5c) in each half cycle is made approximately zero and the individual single-phase inverters (5a-5c) make a correction for subtracting a common voltage (Vo) from target output voltages of individual phases during the period when the reverse-polarity voltage pulse (10ua) is generated.
摘要翻译：一个三相逆变器电路（4），其直流部分是连接在太阳能电池（1）的输出端和与三相交流输出线串联的单相逆变器（5a-5c）之间的平滑电容器（3）相位逆变器电路（4）共同构成逆变器部分，该逆变器部分连接到三相电力系统（2）。三相逆变器电路（4）在脉冲宽度对应于系统电压的每半个周期的半周期的每个基本电压脉冲期间的周期期间输出反极性电压脉冲（10ua）。在每个半周期内由各个单相逆变器（5a-5c）产生的电力负担大致为零，并且各个单相逆变器（5a-5c）进行从目标输出中减去公共电压（Vo）的校正在产生反极性电压脉冲（10ua）的期间，各相的电压。

54. 发明授权

US07638726B2 Wire electric discharge machining apparatus and wire electric discharge machining method 有权
标题翻译：线放电加工装置及线放电加工方法
公开(公告)号：US07638726B2
公开(公告)日：2009-12-29
申请号：US11665683
申请日：2006-04-05
申请人： Takashi Hashimoto , Tatsushi Satou , Akihiko Iwata , Yoshikazu Ukai , Yasuo Onodera
发明人： Takashi Hashimoto , Tatsushi Satou , Akihiko Iwata , Yoshikazu Ukai , Yasuo Onodera
IPC分类号： B23H7/02 , B23H7/20
CPC分类号： B23H7/04 , B23H1/022
摘要： A discharge-generation control unit applies at least a preliminary-discharge voltage pulse and a main-discharge voltage pulse between a wire electrode and a work. A discharge-position determining unit determines a discharge position from results of measurement by a plurality of current measuring units. A machining-energy adjusting unit adjusts machining energy generated by the main-discharge voltage pulse based on a discharge position determined before applying the main-discharge voltage pulse, and reflects a result of the adjustment on the generation of an electric discharge by feeding the result to the discharge-generation control unit.
摘要翻译：放电产生控制单元在线电极和工件之间至少施加预放电电压脉冲和主放电电压脉冲。放电位置确定单元通过多个电流测量单元从测量结果确定放电位置。加工能量调节单元基于在施加主放电电压脉冲之前确定的放电位置来调整由主放电电压脉冲产生的加工能量，并且通过馈送结果来反映对放电产生的调整结果到放电产生控制单元。

55. 发明授权

US07602626B2 Power conversion apparatus 有权
标题翻译：电力转换装置
公开(公告)号：US07602626B2
公开(公告)日：2009-10-13
申请号：US11816029
申请日：2006-02-21
申请人： Akihiko Iwata , Makoto Seto , Masaki Yamada , Shigeki Harada
发明人： Akihiko Iwata , Makoto Seto , Masaki Yamada , Shigeki Harada
IPC分类号： H02M7/00
CPC分类号： H02M7/53871 , H02M7/49 , H02M2001/0077 , Y10T307/685
摘要： In a power conversion apparatus that boosts a solar light voltage, converts it to AC and supplies AC power to a load or system, a second inverter is connected in series to one of two terminals on the AC side of a first inverter that uses, as its DC source, a DC voltage boosted from a solar light voltage by a chopper circuit. A third inverter is connected in series to the other terminal. Then, output voltages of the second and third inverters are controlled to be equal, and an output voltage is provided by using the sum of the generated voltages of the first, second, and third inverters. Thus, a mid-point potential of the DC power source is made equivalent to an intermediate potential of the output voltage of the power conversion apparatus, that is, the mid-point potential (ground potential) of a system.
摘要翻译：在升压太阳光电压的电力转换装置中，将其转换为交流电并向负载或系统提供AC电力，第二逆变器串联连接到第一逆变器的AC侧的两个端子中的一个，其直流电源，通过斩波电路从太阳光电压提升的直流电压。第三个逆变器串联连接到另一个端子。然后，将第二和第三变换器的输出电压控制为相等，并且通过使用第一，第二和第三逆变器的发电电压之和来提供输出电压。因此，直流电源的中点电位等于电力转换装置的输出电压的中间电位，即系统的中点电位（地电位）。

56. 发明授权

US06660957B1 Apparatus for electric discharge machining 失效
标题翻译：放电加工设备
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。

57. 发明授权

US06184662B2 Pulsed power supply device 失效
标题翻译：脉冲供电装置
公开(公告)号：US06184662B2
公开(公告)日：2001-02-06
申请号：US09367933
申请日：1999-10-26
申请人： Masataka Yabuuchi , Akihiko Iwata
发明人： Masataka Yabuuchi , Akihiko Iwata
IPC分类号： G05F110
CPC分类号： H03K17/80 , H03K3/53 , H05B41/34
摘要： A pulsed power supply device in which a capacitor (23) having a charged voltage is discharged quickly upon closure of a switch (24). First and second series circuits (51, 52) are connected to each other in series and provided between the output terminals of a DC voltage source (2). The first series circuit (51) is a series circuit of a first reactor (14) and a first forward-direction diode (15), and the second series circuit (52) is a series circuit of a second forward-direction diode (16) and a switch (24). A third series circuit (53) that is a series circuit of a capacitor (23), a second reactor (25), and a discharge tube (9) is connected in parallel to the second series circuit (52). Upon closure of the switch (24), the discharge tube emits light and, on the other hand, the capacitor (23) is discharged to produce an oscillation current, whereby a voltage develops across the capacitor (23) in the polarity opposite to the polarity at the time of the initial charging. Since this voltage is added to a power source voltage and reused in the next charging cycle, the pulsed power supply device has a high efficiency.
摘要翻译：一种脉冲电源装置，其中在闭合开关（24）时具有充电电压的电容器（23）被快速放电。第一和第二串联电路（51,52）串联连接并设置在直流电压源（2）的输出端子之间。第一串联电路（51）是第一电抗器（14）和第一正向二极管（15）的串联电路，第二串联电路（52）是第二正向二极管（16）的串联电路）和开关（24）。作为电容器（23），第二电抗器（25）和放电管（9）的串联电路的第三串联电路（53）与第二串联电路（52）并联连接。在闭合开关（24）时，放电管发光，另一方面，电容器（23）被放电以产生振荡电流，由此电容器（23）的电压以与初始充电时的极性。由于该电压被添加到电源电压并且在下一个充电周期中重新使用，因此脉冲电源装置具有高效率。

58. 发明授权

US5243230A Semiconductor switching apparatus 失效
标题翻译：半导体开关装置
公开(公告)号：US5243230A
公开(公告)日：1993-09-07
申请号：US859903
申请日：1992-03-30
申请人： Hiroshi Itou , Akihiko Iwata , Tatsuki Okamoto , Yoshihiro Ueda , Yoichiro Tabata
发明人： Hiroshi Itou , Akihiko Iwata , Tatsuki Okamoto , Yoshihiro Ueda , Yoichiro Tabata
IPC分类号： H01S3/03 , H03K3/57 , H03K17/10 , H03K17/12
CPC分类号： H03K17/127 , H01S3/031 , H03K17/102 , H03K17/122 , H03K3/57 , Y10T307/826
摘要： A pulse generator circuit which comprises a power supply source for outputting a high voltage signal. A first capacitor is charged with the high voltage signal output by the power supply source. A load device is supplied with the high voltage signal charged in the first capacitor. A semiconductor switch together with the first capacitor and the load constitute a closed loop. A first diode is inserted between the power supply source and the closed loop. A second diode is inserted in a closed loop and operates to suppress electrical vibrations. A second diode may have an opposite polarity to that of the first diode. A snubber circuit may also be inserted in parallel across the second diode.
摘要翻译：一种脉冲发生器电路，包括用于输出高电压信号的电源。第一电容器由电源输出的高电压信号充电。负载装置被提供有充电在第一电容器中的高电压信号。半导体开关与第一电容器和负载构成闭环。第一个二极管插在电源和闭环之间。第二个二极管被插入一个闭环并用于抑制电气振动。第二二极管可以具有与第一二极管相反的极性。缓冲电路也可以并联插入第二二极管。

59. 发明授权

US09550245B2 Electric discharge machining apparatus, electric discharge machining method, and semiconductor substrate manufacturing method 有权
标题翻译：放电加工装置，放电加工方法以及半导体基板的制造方法
公开(公告)号：US09550245B2
公开(公告)日：2017-01-24
申请号：US13002999
申请日：2009-07-23
申请人： Taichiro Tamida , Takashi Hashimoto , Akihiko Iwata , Tatsushi Sato
发明人： Taichiro Tamida , Takashi Hashimoto , Akihiko Iwata , Tatsushi Sato
IPC分类号： B23H1/02
CPC分类号： B23H1/028 , B23H1/022 , B23H2300/20
摘要： An electric discharge machining apparatus includes: electrodes the total quantity of which is equal to N; an alternating-current power source; and capacitors the total quantity of which is equal to N. The alternating-current power source applies an alternating voltage commonly to the electrodes. One end of each of the capacitors is connected to a corresponding one of the electrodes, whereas the other ends of the capacitors are commonly connected to the alternating-current power source.
摘要翻译：放电加工装置包括：其总量等于N的电极; 交流电源; 以及其总量等于N的电容器。交流电源向电极施加一个交流电压。每个电容器的一端连接到相应的一个电极，而电容器的另一端共同连接到交流电源。

60. 发明授权

US08502415B2 Uninterrupted power supply unit 有权
标题翻译：不间断电源单元
公开(公告)号：US08502415B2
公开(公告)日：2013-08-06
申请号：US13043124
申请日：2011-03-08
申请人： Masaki Yamada , Akihiko Iwata , Yoshihiro Hatakeyama
发明人： Masaki Yamada , Akihiko Iwata , Yoshihiro Hatakeyama
IPC分类号： H02J7/00
CPC分类号： H02M7/49 , H02J3/1814 , H02J9/062 , Y02E40/18 , Y10T307/511 , Y10T307/625
摘要： An uninterrupted power supply unit is provided with a straightforward switch connected between a power source and a load to supply or interrupt a power to a system. The combination of the outputs from two kinds of single phase inverters enables compensating for a variation in the system voltage in the normal condition and to supply a predetermined voltage to the load after decreasing in the system voltage and opening of a straight forward switch.
摘要翻译：不间断的电源单元设置有连接在电源和负载之间的直接开关，以向系统供电或中断电源。来自两种单相逆变器的输出的组合使得能够补偿正常状态下的系统电压的变化，并且在系统电压降低和直线开关的断开之后向负载提供预定的电压。

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