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    Method and apparatus for power converting AC into DC or DC into AC by converter having common phase connection
    1.
    发明授权
    Method and apparatus for power converting AC into DC or DC into AC by converter having common phase connection 失效
    用于通过具有共同相位连接的转换器将AC电力转换成DC或DC到AC的方法和装置

    公开(公告)号：US5892674A

    公开(公告)日：1999-04-06

    申请号：US799761

    申请日：1997-02-12

    申请人： Keizo Shimada ,  Hideyasu Umetsu ,  Hideaki Kunisada

    发明人： Keizo Shimada ,  Hideyasu Umetsu ,  Hideaki Kunisada

    IPC分类号： H02M5/458 ,  H02M7/12 ,  H02M7/219 ,  H02M7/48 ,  H02M7/217

    CPC分类号： H02M5/4585 ,  H02M7/219

    摘要： In a power converter apparatus having a three-phase AC power supply connecting unit, a positive side capacitor, a negative side capacitor, first-phase and third-phase converting circuits each including switching elements connected in series, and a common phase for connecting a neutral polarity to a second phase, there are provided a common phase converting circuit including two switching elements connected in series between positive and negative polarities, a change detector for detecting a temporal change of an electric current flowing through the common phase, and a duty controller for changing the on-off duty of the switching elements in the common phase converting circuit on the basis of the temporal change.

    摘要翻译： 在具有三相交流电源连接单元，正侧电容器，负侧电容器，第一相和三相转换电路的电力转换装置中，每个包括串联连接的开关元件，以及用于连接 提供了一个公共相位转换电路，它包括串联在正极和负极之间的两个开关元件，一个用于检测流过该共同相的电流的时间变化的变化检测器，以及一个占空比控制器 用于基于时间变化来改变公共相位转换电路中的开关元件的导通占空比。

    Electric power converter
    2.
    发明授权
    Electric power converter 失效
    电力转换器

    公开(公告)号：US6084785A

    公开(公告)日：2000-07-04

    申请号：US35897

    申请日：1998-03-06

    申请人： Hideaki Kunisada ,  Keizo Shimada ,  Hideyasu Umetsu

    发明人： Hideaki Kunisada ,  Keizo Shimada ,  Hideyasu Umetsu

    IPC分类号： H02M1/00 ,  H02M1/32 ,  H02M5/45 ,  H02M1/12 ,  H02M3/18 ,  H02M7/537

    CPC分类号： H02M1/32 ,  H02M5/4505

    摘要： An electric power converter having an AC input and AC output, and comprising a power rectifier and a power inverter having a DC three-wire circuit, wherein means for detecting a current or a voltage is connected between the AC power source and ground. When a current or a voltage is detected, an alarm is produced or the apparatus is halted. This makes it possible to judge whether the power inverter is in a state capable of producing an excessively large potential.

    摘要翻译： 一种具有AC输入和AC输出的电力转换器，并且包括功率整流器和具有DC三线电路的电力逆变器，其中用于检测电流或电压的装置连接在AC电源和地之间。 当检测到电流或电压时，产生报警或停止设备。 这使得可以判断功率逆变器是否处于能够产生过大电位的状态。

    Overcurrent and overvoltage protected transistor inverter
    7.
    发明授权
    Overcurrent and overvoltage protected transistor inverter 失效
    过流和过压保护晶体管逆变器

    公开(公告)号：US4672524A

    公开(公告)日：1987-06-09

    申请号：US903198

    申请日：1986-09-03

    申请人： Minoru Toriyama ,  Hideaki Kunisada ,  Katsuo Sato

    发明人： Minoru Toriyama ,  Hideaki Kunisada ,  Katsuo Sato

    IPC分类号： H02H3/087 ,  H02M1/00 ,  H03K17/082 ,  H02H7/122

    CPC分类号： H02M7/53803 ,  H03K17/0826

    摘要： An inverter that has one or more transistors for supplying current to a load with one or more phases is provided with an overcurrent protection for the transistor. The changing rate for reducing the base current to the transistor upon the detection of an overcurrent is reduced according to a separate delay circuit so that the transistor will not be destroyed by an over voltage that would otherwise occur due to a rapid drop in current passing through the transistor and the inductance of the load circuit including the transistor.

    摘要翻译： 具有用于向具有一个或多个相位的负载提供电流的一个或多个晶体管的反相器被提供有晶体管的过电流保护。 根据单独的延迟电路，减小了过电流检测时降低到晶体管的基极电流的变化率，使得晶体管不会被过电压破坏，否则由于电流通过的电流快速下降，否则会发生 晶体管和包括晶体管的负载电路的电感。