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    • 2. 发明授权
    • Self-driven AC-DC synchronous rectifier for power applications
    • 用于电力应用的自驱动AC-DC同步整流器
    • US08913409B2
    • 2014-12-16
    • US12898898
    • 2010-10-06
    • Shu Yuen Ron HuiWenxing ZhongHo Wing Choi
    • Shu Yuen Ron HuiWenxing ZhongHo Wing Choi
    • H02M7/219
    • H02M7/217H02M7/06H02M7/2173H02M7/219H02M2007/2195Y02B70/1408
    • Systems, methods, and devices that employ self-driven gate-drive circuitry to facilitate controlling power switches to emulate a diode bridge to synchronously rectify a power signal are presented. A single-phase or multi-phase synchronous rectifier can comprise at least a first pair of switches of a first conducting path and a second pair of switches of a second conducting path that can form or emulate a diode bridge. To facilitate emulating turn-on and turn-off conditions of a diode, a switch can be turned on when voltage across the switch is forward-biased and turned off when switch current is reversed; also, there can be at least one current-controlled switch in each conducting path. Self-driven gate-drive circuitry employs low power components that can facilitate controlling respective switching of the at least first pair and second pair of switches, wherein switching of the switches is also controlled at start-up to emulate a diode bridge.
    • 提出了采用自驱动栅极驱动电路以便于控制功率开关来仿真二极管桥以同步整流功率信号的系统,方法和装置。 单相或多相同步整流器可以包括可形成或模拟二极管桥的第一导电路径和第二导通路径的第二对开关的至少第一对开关。 为了便于仿真二极管的导通和关断条件,当开关电流反向时,开关两端的电压正向偏置并关断时,开关可以导通; 此外,在每个导电路径中可以存在至少一个电流控制开关。 自驱动栅极驱动电路采用低功率组件,其可以有助于控制至少第一对和第二对开关的相应开关,其中开关的开关也在启动时被控制以仿真二极管桥。
    • 6. 发明授权
    • Apparatus and method for providing information relating to a motor
    • 用于提供与电动机有关的信息的装置和方法
    • US08339078B2
    • 2012-12-25
    • US12501645
    • 2009-07-13
    • Shu Yuen Ron Hui
    • Shu Yuen Ron Hui
    • H02P27/04
    • H02P27/08H02P6/007H02P6/18H02P2203/09
    • This invention relates to an apparatus and method for deriving speed and position information for an electric motor. Apparatus for and a method of controlling a motor 100 are also disclosed. The apparatus for providing information relating to the operation of an electrical motor 100 comprises a sampler 50, 51 for sampling the instantaneous motor current is and a processor 160 for determining the instantaneous rate of change of the motor current and providing information about the motion or position of said motor based on said instantaneous rate of change of the motor current. In this way speed and position information can be provided, at low speeds, and without using a speed sensor.
    • 本发明涉及一种用于导出电动机的速度和位置信息的装置和方法。 还公开了用于控制电动机100的装置和方法。 用于提供与电动机100的操作有关的信息的装置包括用于对瞬时电动机电流进行采样的采样器50,51和用于确定电动机电流的瞬时变化率的处理器160,并提供关于运动或位置的信息 基于所述电动机电流的瞬时变化率。 以这种方式,可以以低速提供速度和位置信息,并且不使用速度传感器。
    • 8. 发明申请
    • RECHARGEABLE BATTERY POWERED PORTABLE ELECTRONIC DEVICE
    • 可充电电池供电便携式电子设备
    • US20120194126A1
    • 2012-08-02
    • US13426525
    • 2012-03-21
    • Shu-yuen Ron HUI
    • Shu-yuen Ron HUI
    • H02J7/00
    • H01F17/0006H01F27/365H01F38/14H01F2017/008H02J7/025H02J50/10
    • There is provided a planar inductive battery charging system designed to enable electronic devices to be recharged. The system includes a planar charging module having a charging surface on which a device to be recharged is placed. Within the charging module and substantially parallel to the charging surface are multiple primary windings formed in a multi-layer structure that couple energy inductively to a secondary winding formed in the device to be recharged. A winding of a first layer is offset relative to a winding of a second layer. The invention also provides secondary modules that allow the system to be used with conventional electronic devices not formed with secondary windings.
    • 提供了一种设计用于使电子设备被充电的平面感应电池充电系统。 该系统包括具有充电表面的平面充电模块,待充电装置放置在该充电表面上。 在充电模块内并且基本上平行于充电表面的是形成为多层结构的多个初级绕组,其将电感感应耦合到形成在要再充电的装置中的次级绕组。 第一层的绕组相对于第二层的绕组偏移。 本发明还提供允许系统与未形成次级绕组的常规电子设备一起使用的次级模块。