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73 条记录 (耗时 0.028 秒)

    Current and frequency converter having means to reduce switching losses
    2.
    发明授权
    Current and frequency converter having means to reduce switching losses 失效
    电流和频率转换器具有减少开关损耗的手段

    公开(公告)号：US4855887A

    公开(公告)日：1989-08-08

    申请号：US247508

    申请日：1988-09-22

    申请人： Ikuo Yamato ,  Norikazu Tokunaga ,  Yasuo Matsuda ,  Hisao Amano

    发明人： Ikuo Yamato ,  Norikazu Tokunaga ,  Yasuo Matsuda ,  Hisao Amano

    IPC分类号： H02M1/00 ,  H02M1/32 ,  H02M3/315 ,  H02M7/48

    CPC分类号： H02M1/32 ,  H02M3/315 ,  H02M7/4807

    摘要： A power conversion apparatus comprises an inverter for converting a voltage of a DC power source into AC power having a frequency higher than the commercial frequency, a transformer, fed by the inverter, for outputting AC power, which is adjusted at a desired voltage, a frequency converter, formed by two pairs of two gate turn-off thyristors (GTOs) connected in reverse-parallel, for converting the frequency of the AC power supplied from the transformer into the commercial frequency, and an energy regenerating device having capacitors for absorbing the energy of a spike voltage occurring due to a circuit inductance upon interruption of a current of each GTO of the frequency converter and a bridge circuit, formed by GTOs and diodes connected in reverse-paralel therewith, for switching over the direction of connecting the capacitors with a secondary winding of the transformer in accordance with the polarity of a voltage of the secondary winding in such a manner that the energy stored in the capacitors is regenerated to the transformer.

    Pulse width modulated inverter with high-to-low frequency output converter
    3.
    发明授权
    Pulse width modulated inverter with high-to-low frequency output converter 失效
    脉宽调制逆变器具有高到低频率输出转换器

    公开(公告)号：US4878163A

    公开(公告)日：1989-10-31

    申请号：US201755

    申请日：1988-06-03

    申请人： Ikuo Yamato ,  Norikazu Tokunaga ,  Yasuo Matsuda ,  Hisao Amano

    发明人： Ikuo Yamato ,  Norikazu Tokunaga ,  Yasuo Matsuda ,  Hisao Amano

    IPC分类号： H02M7/48

    CPC分类号： H02M7/4807

    摘要： In a power conversion system, a DC voltage of a DC power supply is converted into a predetermined high-frequency voltage by an inverter, and a high-frequency low voltage generated from the inverter is converted into a high-frequency high voltage by a transformer. A high-frequency high voltage generated from a secondary winding of the transformer is converted into a predetermined low-frequency voltage by a frequency changing circuit. The commutating operation of the frequency changing circuit is performed by a control circuit in response to the output current of the frequency changing circuit and in synchronism with the starting time of the short-circuiting prevention period of the inverter. As a result, the converted output of the power conversion system is prevented from decreasing.

    Power supply control system
    7.
    发明授权
    Power supply control system 失效
    电源控制系统

    公开(公告)号：US5297015A

    公开(公告)日：1994-03-22

    申请号：US555025

    申请日：1990-07-20

    申请人： Hideki Miyazaki ,  Ikuo Yamato ,  Kenichi Onda ,  Yasuo Matsuda ,  Yuzo Morita ,  Hidefumi Shirahama ,  Norikazu Tokunaga ,  Yutaka Suzuki

    发明人： Hideki Miyazaki ,  Ikuo Yamato ,  Kenichi Onda ,  Yasuo Matsuda ,  Yuzo Morita ,  Hidefumi Shirahama ,  Norikazu Tokunaga ,  Yutaka Suzuki

    IPC分类号： H01R13/642 ,  H01R13/66 ,  H01R29/00 ,  H02J3/00 ,  H02J4/00 ,  H02M1/10 ,  H02M7/537 ,  H01R25/00 ,  H02M7/155

    CPC分类号： H02M1/10 ,  H01R13/642 ,  H01R13/6675 ,  H01R29/00 ,  H02J3/00 ,  H02J4/00

    摘要： A power supply control system including a variable power converter for converting electric power from a power supply to a load into that of a specification required by the load in response to a power specification information source provided on the load side. With a change in the load, the information source also changes, thereby providing a flexible power supply control system capable of meeting different loads. For applications to a high power supply, the system comprises a plurality of variable power converters adapted to operate selectively in accordance with requisite power information sources provided in or on the side of a plurality of loads, thereby providing a system realizing a flexible power supply. For application to a low power supply, the system comprises a plug having a power specification information source and a socket having a variable power converter.

    摘要翻译： 一种电源控制系统，其包括用于响应于设置在负载侧的电力指定信息源将电力从电源转换为负载的可变功率转换器，用于负载所要求的规格。 随着负载的变化，信息源也发生变化，从而提供能够满足不同负载的灵活的电源控制系统。 对于高电源的应用，系统包括多个可变功率转换器，其适于根据在多个负载中或其侧面设置的必需功率信息源选择性地进行操作，从而提供实现柔性电源的系统。 为了适用于低电源，该系统包括具有电力指定信息源的插头和具有可变功率转换器的插座。

    Gate circuit for gate turn-off thyristor
    9.
    发明授权
    Gate circuit for gate turn-off thyristor 失效
    栅极电路用于栅极截止晶闸管

    公开(公告)号：US4456836A

    公开(公告)日：1984-06-26

    申请号：US335547

    申请日：1981-12-29

    申请人： Yasuo Matsuda ,  Kazuo Honda ,  Hiroshi Fukui ,  Hisao Amano ,  Shuji Musha

    发明人： Yasuo Matsuda ,  Kazuo Honda ,  Hiroshi Fukui ,  Hisao Amano ,  Shuji Musha

    IPC分类号： H03K17/732 ,  H03K17/72

    CPC分类号： H03K17/732

    摘要： A gate circuit for gate turn-off thyristors is disclosed which includes a turn-on circuit formed of a series combination of a turn-on power source and an NPN transistor and a turn-off circuit formed of a series combination of a turn-off power source and a thyristor, and in which a PNP transistor is provided between the anode and gate of the thyristor in such a manner that the base of the NPN transistor and the base of the PNP transistor are connected to each other and a junction of these bases receives a control signal for turning on or off a gate turn-off thyristor.

    摘要翻译： 公开了一种用于栅极截止晶闸管的栅极电路，其包括由导通电源和NPN晶体管的串联组合形成的导通电路，以及由关断的串联组合形成的截止电路 电源和晶闸管，并且其中PNP晶体管以这样的方式设置在晶闸管的阳极和栅极之间，使得NPN晶体管的基极和PNP晶体管的基极彼此连接，并且这些 基极接收用于接通或关闭栅极截止晶闸管的控制信号。

    Motor having cores structure wherein magnetic circuit is designed in three dimensional configuration
    10.
    发明申请
    Motor having cores structure wherein magnetic circuit is designed in three dimensional configuration 审中-公开
    具有磁芯结构的电动机，其中磁路设计成三维结构

    公开(公告)号：US20060113849A1

    公开(公告)日：2006-06-01

    申请号：US11326457

    申请日：2006-01-06

    申请人： Yuji Enomoto ,  Noriaki Hino ,  Shouichi Kawamata ,  Kazumasa Ide ,  Yasuo Matsuda ,  Toshihiko Sakai

    发明人： Yuji Enomoto ,  Noriaki Hino ,  Shouichi Kawamata ,  Kazumasa Ide ,  Yasuo Matsuda ,  Toshihiko Sakai

    IPC分类号： H02K41/00 ,  H02K15/12 ,  H02K21/12

    CPC分类号： H02K1/08 ,  H02K1/02 ,  H02K15/022 ,  H02K41/03

    摘要： In order to provide a motor characterized by a high level of efficiency equal to or better than that of using the silicon steel plate, achieved by easy production method and reduced core loss, which result from reduction in the manpower for production by using the sintered metal or powdered iron core in at least one of the stator and rotor, the present invention provides a motor comprising a stator and a rotor wherein either one of said stator or rotor has a magnet, and the other has a magnetic substance. This motor is further characterized in that the main magnetic flux flowing between the stator and rotor changes in the three-dimensional directions according to the magnetic structure of this motor, and at least part of said magnetic substance is composed of an aggregate of magnetic powder.

    摘要翻译： 为了提供一种以与使用硅钢板相同或更好的高效率的电动机来实现的，其通过易于制造的方法实现，并且由于通过使用烧结金属的生产人力的减少而导致的铁损减少 或定子和转子中的至少一个中的铁芯，本发明提供一种电动机，其包括定子和转子，其中所述定子或转子中的任一个具有磁体，而另一个具有磁性物质。 该电动机的特征还在于，根据该电动机的磁性结构，在定子和转子之间流动的主磁通量在三维方向上发生变化，并且至少一部分磁性物质由磁粉的集合体构成。