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54 条记录 (耗时 0.029 秒)

    Apparatus and method for controlling rotation speed of synchronous reluctance motor
    22.
    发明授权
    Apparatus and method for controlling rotation speed of synchronous reluctance motor 失效
    同步磁阻电机转速控制装置及方法

    公开(公告)号：US06724168B2

    公开(公告)日：2004-04-20

    申请号：US10170541

    申请日：2002-06-14

    申请人： Dal-Ho Cheong ,  Jae-Yoon Oh ,  Kyung-Hoon Lee

    发明人： Dal-Ho Cheong ,  Jae-Yoon Oh ,  Kyung-Hoon Lee

    IPC分类号： H02P528

    CPC分类号： H02P25/08 ,  H02P21/14 ,  H02P21/141 ,  H02P21/24

    摘要： An apparatus is provided for controlling rotation speed of a synchronous reluctance motor, including a position estimation unit for controlling rotation speed of the synchronous reluctance motor by estimating the position angle of the rotor and rotation speed of the rotor according to the low speed or high speed region. The apparatus can control the motor in the high speed area or low speed area, stabilize the transient state generated in the process that the motor is converted from the low speed area to the high speed area and show stable speed control performance, thus performing more precise speed control.

    摘要翻译： 提供一种用于控制同步磁阻电动机的转速的装置，包括：通过根据低速或高速度估计转子的位置角度和转子的转速来控制同步磁阻电动机的转速的位置估计单元 地区。 该装置可以在高速区域或低速区域中控制电动机，稳定电机从低速区域转换到高速区域的过程中产生的过渡状态，并显示出稳定的速度控制性能，从而执行更精确 速度控制。

    3, 6-bis[4-(alkyloxy) phenyloxy] pyromellitic dianhydrides and process for preparing the same
    23.
    发明授权
    3, 6-bis[4-(alkyloxy) phenyloxy] pyromellitic dianhydrides and process for preparing the same 失效
    3,6-双[4-（烷氧基）苯氧基] 1,2,4,5-苯四酸二酐及其制备方法

    公开(公告)号：US6046342A

    公开(公告)日：2000-04-04

    申请号：US275487

    申请日：1999-03-24

    申请人： Jin Chul Jung ,  Kyung-Hoon Lee

    发明人： Jin Chul Jung ,  Kyung-Hoon Lee

    IPC分类号： C07D493/04 ,  C07D493/02

    CPC分类号： C07D493/04

    摘要： The present invention provides pyromellitic dianhydride derivatives represented as formula I: ##STR1## wherein, R is C.sub.1-24 alkyl.The pyromellitic dianhydride derivatives of the invention can be used as monomers for the synthesis of polyimides, ladder poly(imidazopyrrolone)s, crosslinked polyamides and polyesters. The present invention also provides a novel process for preparing the pyromellitic dianhydride derivatives as formula I.

    摘要翻译： 本发明提供了以式I表示的均苯四酸二酐衍生物：其中R为C 1-4烷基。 本发明的均苯四酸二酐衍生物可用作合成聚酰亚胺，梯形聚（咪唑并吡咯酮），交联聚酰胺和聚酯的单体。 本发明还提供了制备式I的均苯四酸二酐衍生物的新方法。

    Surge protection apparatus and method using the same
    25.
    发明授权
    Surge protection apparatus and method using the same 有权
    浪涌保护装置及其使用方法

    公开(公告)号：US08681467B2

    公开(公告)日：2014-03-25

    申请号：US13326543

    申请日：2011-12-15

    申请人： Kwang-Uk Chu ,  Up Namkoong ,  Kyung-Hoon Lee

    发明人： Kwang-Uk Chu ,  Up Namkoong ,  Kyung-Hoon Lee

    IPC分类号： H02H1/00

    CPC分类号： H02H9/041 ,  H02H9/042

    摘要： A surge protection apparatus is provided. The surge protection apparatus includes a non-linear element unit, a signal generation unit, and a switching element unit. The non-linear element unit enables an electrical surge to pass therethrough by rapidly decreasing resistance of the non-linear element unit when the difference in voltage between two ends of the non-linear element unit is equal to or greater than a predetermined value. The signal generation unit generates a control signal in response to current which passes through the non-linear element unit. The switching element unit switches the status thereof in response to the control signal.

    摘要翻译： 提供一种浪涌保护装置。 浪涌保护装置包括非线性元件单元，信号生成单元和开关元件单元。 当非线性元件单元的两端之间的电压差等于或大于预定值时，非线性元件单元能够通过快速降低非线性元件单元的电阻而使电涌通过。 信号生成单元响应于通过非线性元件单元的电流产生控制信号。 开关元件单元响应于控制信号切换其状态。

    High-voltage coaxial cable and connector
    26.
    发明授权
    High-voltage coaxial cable and connector 有权
    高压同轴电缆和连接器

    公开(公告)号：US08568166B2

    公开(公告)日：2013-10-29

    申请号：US13330757

    申请日：2011-12-20

    申请人： Seung-Kab Ryu ,  Kyung-Hoon Lee

    发明人： Seung-Kab Ryu ,  Kyung-Hoon Lee

    IPC分类号： H01R9/05

    CPC分类号： H01R24/38 ,  H01B11/1808 ,  H01R4/30 ,  H01R9/05 ,  H01R2103/00

    摘要： A high-voltage coaxial cable and a connector are provided. The connector includes inner connector electrode, a connector dielectric enclosing an inner connector electrode, and an external connector housing. The inside electrode of a connector is provided with a tapped hole in one side thereof. The tapped hole corresponds to the threaded single core of a high-voltage coaxial cable. The inside electrode of a connector is selectively assembled with and separated from the high-voltage coaxial cable by selectively screwing the threaded single core into and away from the tapped hole. The connector dielectric is formed along the circumferential surface of the inside electrode, and is provided with a coupling portion. The coupling portion couples the connector with another connector, and is formed to a preset depth in a corrugated shape. The connector housing is formed in a shape that surrounds the connector dielectric.

    摘要翻译： 提供高压同轴电缆和连接器。 连接器包括内部连接器电极，封闭内部连接器电极的连接器电介质和外部连接器壳体。 连接器的内部电极在其一侧设置有螺纹孔。 螺纹孔对应于高压同轴电缆的螺纹单芯。 连接器的内部电极通过选择性地将螺纹的单个芯螺纹拧入并远离螺纹孔而与高压同轴电缆选择性地组装和分离。 连接器电介质沿着内部电极的周向表面形成，并且设置有联接部。 连接部分将连接器与另一个连接器相连，并形成为波形形状的预设深度。 连接器壳体形成为围绕连接器电介质的形状。

    Interior permanent magnet type brushless direct current motor
    27.
    发明授权
    Interior permanent magnet type brushless direct current motor 有权
    内置永磁式无刷直流电机

    公开(公告)号：US08405271B2

    公开(公告)日：2013-03-26

    申请号：US12609052

    申请日：2009-10-30

    申请人： Kyung-Hoon Lee ,  Jun-Ho Ahn

    发明人： Kyung-Hoon Lee ,  Jun-Ho Ahn

    IPC分类号： H02K1/27 ,  H02K21/12

    CPC分类号： H02K29/03 ,  H02K1/276 ,  H02K21/16

    摘要： An interior permanent magnet type brushless direct current (BLDC) motor includes a stator having a plurality of slots and a stator coil wound on the slots. The interior permanent magnet type brushless direct current (BLDC) motor also includes a rotor that rotates with respect to the stator and that has a rotor core and a plurality of permanent magnets positioned in the rotor core. The rotor has a notch that is cut off between adjacent permanent magnets.

    摘要翻译： 内部永磁型无刷直流电动机包括具有多个槽的定子和缠绕在槽上的定子线圈。 内部永磁型无刷直流（BLDC）电动机还包括相对于定子旋转并具有转子芯和定位在转子芯中的多个永磁体的转子。 转子具有在相邻的永磁体之间切断的凹口。