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33 条记录 (耗时 0.029 秒)

    Inverter apparatus
    3.
    发明授权
    Inverter apparatus 有权
    变频器

    公开(公告)号：US08582335B2

    公开(公告)日：2013-11-12

    申请号：US13461201

    申请日：2012-05-01

    申请人： Ryuta Hasegawa ,  Hiroshi Mochikawa ,  Masami Hirata ,  Yukihiko Hatano

    发明人： Ryuta Hasegawa ,  Hiroshi Mochikawa ,  Masami Hirata ,  Yukihiko Hatano

    IPC分类号： H02M7/5387

    CPC分类号： H02M7/48 ,  B60L3/003 ,  H02M2001/327

    摘要： An inverter apparatus according to one embodiment includes switching elements and freewheel diodes which are connected to a direct-current power supply, a temperature detector provided near at least one of the switching elements, and a temperature estimation unit. The temperature estimation unit estimates temperatures of switching elements not provided with the temperature detector, based on an estimated-temperature increase value calculated by a loss model of the switching elements and freewheel diode and others, and a temperature of the switching element detected by the temperature detector.

    摘要翻译： 根据一个实施例的逆变器装置包括连接到直流电源的开关元件和续流二极管，设置在至少一个开关元件附近的温度检测器和温度估计单元。 温度估计单元基于由开关元件和续流二极管等的损耗模型计算出的估计温度升高值和由温度检测的开关元件的温度来估计未设置有温度检测器的开关元件的温度 探测器。

    Power Converter
    4.
    发明申请
    Power Converter 有权
    电源转换器

    公开(公告)号：US20080253158A1

    公开(公告)日：2008-10-16

    申请号：US11719359

    申请日：2005-11-15

    申请人： Hiroshi Mochikawa ,  Tateo Koyama

    发明人： Hiroshi Mochikawa ,  Tateo Koyama

    IPC分类号： H02M7/538

    CPC分类号： H02M7/5387 ,  H02M1/34 ,  H02M2001/0051 ,  H02M2001/344 ,  Y02B70/1491

    摘要： There are provided: sets of pairs of main circuit switching elements (4u), (4x) that supply power to a load, connected in series with a DC power source; free-wheel diodes (5u), (5x) connected in anti-parallel with these main circuit switching elements; and a reverse voltage application circuit (8) that applies reverse voltage smaller than the DC voltage source to the free-wheel diodes when these free-wheel diodes cut off. The reverse voltage application circuit includes a current suppression circuit (10) that suppresses the main circuit current flowing in the low-voltage DC voltage power source on reverse recovery of the free-wheel diodes.

    摘要翻译： 提供：与DC电源串联连接的负载供电的主电路开关元件对（4u），（4x）的组合; 与这些主电路开关元件反并联连接的续流二极管（5u），（5x） 以及反向电压施加电路（8），当这些续流二极管截止时，反向电压施加电路（8）将小于直流电压源的反向电压施加到续流二极管。 反向电压施加电路包括电流抑制电路（10），其抑制在续流二极管反向恢复时在低压直流电压电源中流动的主电路电流。

    Rectifier and transformer thereof
    5.
    发明授权
    Rectifier and transformer thereof 有权
    整流器及其变压器

    公开(公告)号：US06396723B2

    公开(公告)日：2002-05-28

    申请号：US09881039

    申请日：2001-06-15

    申请人： Hiroshi Mochikawa ,  Junichi Tsuda

    发明人： Hiroshi Mochikawa ,  Junichi Tsuda

    IPC分类号： H02M700

    CPC分类号： H02M7/08

    摘要： There are provided: a main three-phase full-wave rectifier (8) that converts three-phase AC (R phase, S phase, T phase) into DC; a transformer (9) that outputs AC of a total of six phases corresponding to the points that equally divide by three the arcs drawn in a transformer vector diagram in which an equilateral triangle is formed whereof the R phase, S phase and T phase are vertices, centered on each vertex and linking the remaining two points; and two auxiliary three-phase full-wave rectifiers (12) and (13) in that convert into DC the six-phase AC that is output from the transformer (9), the output lines of the main three-phase full-wave rectifier (8) and two auxiliary three-phase full-wave rectifiers (12) and (13) being connected in parallel. The current flowing in the DC line through the transformer can therefore be reduced to ⅓ of the whole in the case of an 18-pulse rectifier, so enabling the capacity of the transformer to be reduced.

    摘要翻译： 提供：将三相交流（R相，S相，T相）转换成直流的主三相全波整流器（8） 输出总共六相的AC的变压器（9），其相应于在形成等边三角形的变压器矢量图中绘制的弧等于三等分的点，其中R相，S相和T相为顶点 以每个顶点为中心，并链接剩下的两个点; 和两个辅助三相全波整流器（12）和（13），将变压器（9）输出的六相交流转换为直流，主三相全波整流器的输出线 （8）和两个并联连接的辅助三相全波整流器（12）和（13）。 因此，在18脉冲整流器的情况下，通过变压器流过直流线路的电流可以降低到整体的1/3，从而能够减小变压器的容量。

    System interconnection inverter with bypass path
    7.
    发明授权
    System interconnection inverter with bypass path 有权
    带旁路的系统互连逆变器

    公开(公告)号：US08514596B2

    公开(公告)日：2013-08-20

    申请号：US13127641

    申请日：2009-07-21

    申请人： Yushi Koyama ,  Junichi Tsuda ,  Hiroshi Mochikawa

    发明人： Yushi Koyama ,  Junichi Tsuda ,  Hiroshi Mochikawa

    IPC分类号： H02M1/12 ,  H02M1/14

    CPC分类号： H02M1/12 ,  H02M2001/123

    摘要： The present invention includes: an inverter 1 configured to perform pulse wide modulation on an output from a DC power source 5; a first capacitor pair 41 provided at an input side of the inverter and including two capacitors serially connected to form a neutral point; a second capacitor pair 42 provided at an output side of the inverter and including two capacitors serially connected to form a neutral point; a bypass path g for a leakage current formed by connecting the neutral point of the first capacitor pair and the neutral point of the second capacitor pair to each other; at least one common mode choke coil 3 provided between the first capacitor pair and the second capacitor pair and configured to suppress a common mode current generated in the inverter; and an output filter 2 configured to convert a voltage, which is outputted from the inverter and subjected to the pulse wide modulation, into a voltage in a sine wave form.

    摘要翻译： 本发明包括：逆变器1，被配置为对直流电源5的输出进行脉宽调制; 设置在逆变器的输入侧的第一电容器对41，并且包括串联连接以形成中性点的两个电容器; 设置在逆变器的输出侧的第二电容器对42，包括串联连接以形成中性点的两个电容器; 通过将第一电容器对的中性点和第二电容器对的中性点彼此连接而形成的漏电流的旁路路径g; 设置在第一电容器对和第二电容器对之间的至少一个共模扼流线圈3，其被配置为抑制在逆变器中产生的共模电流; 以及输出滤波器2，被配置为将从逆变器输出的并经过脉宽调制的电压转换为正弦波形的电压。

    Variable-flux motor drive system
    8.
    发明授权
    Variable-flux motor drive system 有权
    可变磁通电机驱动系统

    公开(公告)号：US08179068B2

    公开(公告)日：2012-05-15

    申请号：US12375076

    申请日：2007-07-24

    申请人： Kazuaki Yuuki ,  Kazuto Sakai ,  Hiroshi Mochikawa

    发明人： Kazuaki Yuuki ,  Kazuto Sakai ,  Hiroshi Mochikawa

    IPC分类号： H02P7/00

    CPC分类号： H02P23/28 ,  H02K1/276 ,  H02K1/2766 ,  H02K15/03 ,  H02K21/042 ,  H02P21/0089 ,  H02P21/02 ,  H02P21/06 ,  H02P21/10 ,  H02P23/14 ,  Y02T10/643

    摘要： A variable-flux motor drive system including a permanent-magnet motor including a permanent magnet, an inverter to drive the permanent-magnet motor, and a magnetize device to pass a magnetizing current for controlling flux of the permanent magnet. The permanent magnet is a variable magnet whose flux density is variable depending on a magnetizing current from the inverter. The magnetize device passes a magnetizing current that is over a magnetization saturation zone of magnetic material of the variable magnet. This system improves a flux repeatability of the variable magnet and a torque accuracy.

    摘要翻译： 一种可变磁通电动机驱动系统，包括永磁体，包括永磁体的永磁电动机，用于驱动永磁电动机的逆变器，以及磁化装置，以通过用于控制永磁体的磁通的磁化电流。 永磁体是可变磁体，其磁通密度根据来自逆变器的磁化电流而变化。 磁化装置通过在可变磁体的磁性材料的磁化饱和区域之上的磁化电流。 该系统提高了可变磁体的磁通重复性和转矩精度。

    Power conversion device
    9.
    发明授权
    Power conversion device 失效
    电源转换装置

    公开(公告)号：US6058037A

    公开(公告)日：2000-05-02

    申请号：US82183

    申请日：1998-05-20

    申请人： Hisanori Shibata ,  Hiroshi Mochikawa

    发明人： Hisanori Shibata ,  Hiroshi Mochikawa

    IPC分类号： H02M7/48 ,  H02M7/5387 ,  H02M7/538 ,  H01H47/00

    CPC分类号： H02M7/53873 ,  H02M2001/0051 ,  Y02B70/1491 ,  Y10T307/766

    摘要： Reflux diode 5u.about.5w and 5x.about.5z are in anti-parallel connected to MOSFET 4u.about.4w and 4x.about.4z. When MOSFET 4u.about.4w and 4x.about.4z are turned OFF, an electric current flows in a forward direction to reflux diode 5u.about.5w and 5x.about.5z. In the case of this construction, when for example reflux diode 5u disconnects, a small inverse voltage is applied from inverse voltage applied circuit 7 to reflux diode 5u. For this reason, as the inverse recovery of reflux diode 5u is produced by low voltage direct current power source 8 of inverse voltage applied circuit 7, loss occurring at reflux diode 5u is reduced.

    摘要翻译： 反流二极管5u差分5w和5x差分5z反并联连接到MOSFET 4u DIFFERENCE 4w和4x差分4z。 当MOSFET 4u差4w和4x差4z关断时，电流向正向流向回流二极管5u差5w和5x差5z。 在这种结构的情况下，当例如回流二极管5u断开时，从反向电压施加电路7向回流二极管5u施加小的反向电压。 因此，由于逆电压电路7的低电压直流电源8产生回流二极管5u的反向恢复，所以在回流二极管5u处发生的损耗降低。

    Device for controlling an AC motor
    10.
    发明授权
    Device for controlling an AC motor 失效
    用于控制交流电动机的装置

    公开(公告)号：US5206575A

    公开(公告)日：1993-04-27

    申请号：US610248

    申请日：1990-11-09

    申请人： Yoshinobu Nakamura ,  Hiroshi Mochikawa

    发明人： Yoshinobu Nakamura ,  Hiroshi Mochikawa

    IPC分类号： H02P27/06 ,  H02P6/00 ,  H02P23/00 ,  H02P27/08

    CPC分类号： H02P27/08 ,  H02P23/26 ,  H02P6/28

    摘要： In the A.C. electric motor control device of this invention, with the object of improving response to abrupt speed adjustments and load fluctuations, and of improving stability of control under low speed operation, a prescribed current of the inverter circuit is detected and the power factor or power is controlled in accordance with the amount of change in this current.Specifically, a prescribed current of the inverter circuit is detected and the power factor or power is calculated from this detected current value. Using the result of this calculation, together with a command value, control quantities are calculated that determine the output voltage and output frequency of said inverter circuit. Control signals for the switching elements of said inverter circuit are then generated in accordance with these calculated control quantities.

    摘要翻译： 在本发明的交流电动机控制装置中，为了提高对突然的速度调整和负载变动的响应，提高低速运转时的控制的稳定性，检测出逆变器电路的规定电流，功率因数或 功率根据该电流的变化量进行控制。 具体地说，检测出逆变器电路的规定电流，根据该检测出的电流值来计算功率因数或功率。 使用该计算的结果，连同命令值，计算确定所述逆变器电路的输出电压和输出频率的控制量。 然后根据这些计算出的控制量生成用于所述逆变器电路的开关元件的控制信号。