公开(公告)号：US07957164B2

公开(公告)日：2011-06-07

申请号：US11587302

申请日：2004-04-21

申请人： Hitoshi Kidokoro ,  Masato Matsubara ,  Akihiko Iwata ,  Hiroyasu Iwabuki ,  Akihiro Suzuki

发明人： Hitoshi Kidokoro ,  Masato Matsubara ,  Akihiko Iwata ,  Hiroyasu Iwabuki ,  Akihiro Suzuki

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。

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。

公开(公告)号：US20100019753A1

公开(公告)日：2010-01-28

申请号：US12441025

申请日：2007-05-17

申请人： Matahiko Ikeda ,  Takahiro Urakabe ,  Kiyoharu Anzai ,  Akihiko Iwata ,  Hirotoshi Maekawa ,  Toshiyuki Kikunaga ,  Masaru Kobayashi ,  Tatsuya Okuda

发明人： Matahiko Ikeda ,  Takahiro Urakabe ,  Kiyoharu Anzai ,  Akihiko Iwata ,  Hirotoshi Maekawa ,  Toshiyuki Kikunaga ,  Masaru Kobayashi ,  Tatsuya Okuda

IPC分类号： G05F3/16

CPC分类号： H02M3/158 ,  H02M2001/0077

摘要： Three or more circuits including a driving inverter circuit and rectifier circuits are connected in series, each of the circuits including a high-voltage side MOSFET and a low-voltage side MOSFET connected in series as well as a smoothing capacitor having positive and negative terminals between which the MOSFETs are connected. LC series circuits, each including a capacitor and an inductor, are disposed individually between one specific circuit and the other circuits with periods of resonance of the LC series circuits made equal to one another. In performing DC/DC power conversion through charging and discharging operation of the capacitors, a resonance phenomenon of the LC series circuits is used to improve conversion efficiency and achieve a reduction in size of the apparatus structure.

摘要翻译： 包括驱动逆变器电路和整流电路的三个或更多个电路串联连接，每个电路包括串联连接的高压侧MOSFET和低压侧MOSFET，以及平滑电容器，其间具有正极和负极端子 MOSFET连接。 LC串联电路各自包括电容器和电感器，分别设置在一个特定电路和其它电路之间，其中LC串联电路的谐振周期彼此相等。 在通过电容器的充放电操作进行DC / DC电力转换时，使用LC串联电路的谐振现象来提高转换效率并实现装置结构的尺寸减小。

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。

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。

公开(公告)号：US20090261793A1

公开(公告)日：2009-10-22

申请号：US12439829

申请日：2007-05-31

申请人： Takahiro Urakabe ,  Matahiko Ikeda ,  Akihiko Iwata ,  Kiyoharu Anzai ,  Hirotoshi Maekawa ,  Toshiyuki Kikunaga ,  Masaru Kobayashi ,  Tatsuya Okuda

发明人： Takahiro Urakabe ,  Matahiko Ikeda ,  Akihiko Iwata ,  Kiyoharu Anzai ,  Hirotoshi Maekawa ,  Toshiyuki Kikunaga ,  Masaru Kobayashi ,  Tatsuya Okuda

IPC分类号： G05F1/10

CPC分类号： H02J7/0016 ,  H02M3/158 ,  H02M2001/0077

摘要： Three or more circuits, in which series-connected low-voltage and high-voltage side switches including MOSFETs including parasitic diodes are connected across positive and negative terminals of each of smoothing capacitors, are connected in series. One of elementary series circuits, each including a capacitor and an inductor, is disposed between any adjacent two of the circuits with the elementary series circuits set to have the same period of resonance. The MOSFETs of rectifier circuits are brought into an ON state simultaneously with the MOSFETs of a driving inverter circuit and brought into an OFF state earlier than the MOSFETs of the driving inverter circuit by a period of time not exceeding a time period equal to (period of resonance)/2. A resonance phenomenon of the capacitor and the inductor is used and conduction loss in the rectifier circuits is reduced in DC/DC power conversion performed through charging and discharging operation of the capacitor.

摘要翻译： 将包括寄生二极管在内的串联连接的低压侧和高压侧开关的三个以上的电路串联连接在各平滑电容器的正端子和负极端子之间。 每个包括电容器和电感器的基本串联电路之一被布置在任何相邻的两个电路之间，其中基本串联电路被设置为具有相同的谐振周期。 整流电路的MOSFET与驱动逆变器电路的MOSFET同时处于导通状态，比驱动用逆变器电路的MOSFET低一段时间，不超过等于（时间段 共振）/ 2。 使用电容器和电感器的共振现象，并且通过电容器的充放电操作进行的DC / DC功率转换，整流电路的导通损耗降低。

公开(公告)号：US20080252145A1

公开(公告)日：2008-10-16

申请号：US12059109

申请日：2008-03-31

申请人： Takahiro URAKABE ,  Matahiko Ikeda ,  Masaru Kobayashi ,  Akihiko Iwata ,  Tatsuya Okuda ,  Hirotoshi Maekawa ,  Toshiyuki Kikunaga

发明人： Takahiro URAKABE ,  Matahiko Ikeda ,  Masaru Kobayashi ,  Akihiko Iwata ,  Tatsuya Okuda ,  Hirotoshi Maekawa ,  Toshiyuki Kikunaga

IPC分类号： H02M3/28

CPC分类号： H02M3/33569 ,  H02M2001/0077 ,  H02M2003/1586 ,  Y10T307/675

摘要： A DC/DC power conversion device includes n-stage circuits comprised of an inverter circuit for driving which is connected between positive terminals and negative terminals of smoothing capacitors, and a rectifier circuit which is connected between positive terminals and negative terminals of smoothing capacitors; a first circuit corresponding to at least one among the n-stage circuits and configured by connecting in parallel cell circuits of m, second circuits corresponding to a plurality of remaining circuits of (n−1) among the n-stage circuits; capacitors for energy transfer connected between middle points of the cell circuits and middle points of the second circuits; and column circuits of m comprised of the cell circuits, the second circuits and the capacitors for energy transfer, wherein the middle points are contact points of high voltage sided elements and low voltage sided elements of the cell circuits and the second circuits; and driving signals for driving the respective column circuits have the same driving cycle and are out of phase with each other.

摘要翻译： DC / DC电力转换装置包括n级电路，其包括连接在平滑电容器的正极端子和负极端子之间的用于驱动的​​反相器电路，以及连接在平滑电容器的正极端子和负极端子之间的整流电路; 对应于n级电路中的至少一个的第一电路，并且通过将与n级电路中的（n-1）的多个剩余电路相对应的m个第二电路的并行单元电路连接而构成; 连接在电池电路的中点和第二电路的中点之间的用于能量传输的电容器; 以及由单元电路，第二电路和用于能量传递的电容器组成的m的列电路，其中中点是单元电路和第二电路的高压侧元件和低压侧元件的接触点; 并且用于驱动各个列电路的驱动信号具有相同的驱动周期并且彼此异相。

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

IPC分类号： H02J3/12 ,  G05F1/70

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。

公开(公告)号：US06836262B2

公开(公告)日：2004-12-28

申请号：US09782292

申请日：2001-02-14

申请人： Takashi Hashimoto ,  Takahiro Urakabe ,  Akihiko Iwata ,  Yoshikazu Tsunoda ,  Takayoshi Nagai

发明人： Takashi Hashimoto ,  Takahiro Urakabe ,  Akihiko Iwata ,  Yoshikazu Tsunoda ,  Takayoshi Nagai

IPC分类号： G09G328

CPC分类号： G09G3/2927 ,  G09G3/296 ,  G09G2310/066 ,  G09G2320/0228

摘要： In a reset period, through applying a rectangular pulse (Pya) of positive polarity to an electrode (Y) and applying a CR pulse (Pxa) of negative polarity to an electrode X, a full lighting pulse is applied between the electrodes (X and Y). The application of the voltage is stopped before a CR pulse (Pxc) reaches a final potential, to generate the pulse (Pxa). A full erase pulse (Pxb) made of a CR pulse having a polarity reverse to that of the pulse (Pxa) is applied to the electrode (X). An erase operation reverses the polarity of wall charges accumulated by a full lighting to effectively perform a potential control operation. The potential control pulse (Pxc) is applied to the electrode (X) to generate a discharge, and the state of the wall charges in a discharge cell is controlled by the discharge to generate an optimal amount of wall charges for a subsequent addressing discharge. The final voltage of the pulse (Pxc) is set equal to a voltage (−Vxg) of an address pulse (Pa). Thus, it is possible to generate a plurality of pulses and stabilize an operation of a PDP with a simple constitution.

摘要翻译： 在复位期间，通过向电极（Y）施加正极性的矩形脉冲（Pya），向电极X施加负极性的CR脉冲（Pxa），在电极（X， Y）。 在CR脉冲（Pxc）达到最终电位之前停止施加电压，以产生脉冲（Pxa）。 将由具有与脉冲（Pxa）相反极性的CR脉冲构成的完全擦除脉冲（Pxb）施加到电极（X）。 擦除操作反转由完全照明积累的壁电荷的极性，以有效地执行电位控制操作。 将电位控制脉冲（Pxc）施加到电极（X）以产生放电，并且通过放电来控制放电单元中的壁电荷的状态，以产生用于随后的寻址放电的最佳量的壁电荷。 将脉冲的最终电压（Pxc）设定为等于寻址脉冲（Pa）的电压（-Vxg）。 因此，可以以简单的结构产生多个脉冲并稳定PDP的操作。

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。