公开(公告)号：US20090121675A1

公开(公告)日：2009-05-14

申请号：US11938042

申请日：2007-11-09

申请人： Wing Choi HO ,  Chi Kwan LEE ,  Ron Shu Yuen HUI ,  Shu Hung CHUNG

发明人： Wing Choi HO ,  Chi Kwan LEE ,  Ron Shu Yuen HUI ,  Shu Hung CHUNG

IPC分类号： H02J7/02

CPC分类号： H02J50/12 ,  H02J7/025 ,  H02J50/40

摘要： This invention provides an electronic control method for a planar inductive battery charging apparatus on which one or more electronic loads such as mobile phones, MP3 players etc can be placed and charged simultaneously. The power control circuit of the charging pad consists of two power conversion stages. Depending on the nature of the input power supply, the first power stage is an AC-DC power converter with variable output voltage control and a second stage is a DC-AC power inverter with constant current control. The combination of the two stages provides power control of the charging pad and generates AC magnetic flux of ideally constant magnitude over the charging areas within a group of primary windings that are excited.

摘要翻译： 本发明提供一种用于平面感应电池充电装置的电子控制方法，其上可以同时放置和充电诸如移动电话，MP3播放器等一个或多个电子负载。 充电垫的功率控制电路由两个电源转换级组成。 根据输入电源的性质，第一功率级是具有可变输出电压控制的AC-DC电力转换器，第二级是具有恒定电流控制的DC-AC电力逆变器。 两级的组合提供了充电垫的功率控制，并且在被激励的一组初级绕组内的充电区域上产生理想恒定幅度的AC磁通量。

公开(公告)号：US07521873B2

公开(公告)日：2009-04-21

申请号：US11508515

申请日：2006-08-22

申请人： Shu Yuen Ron Hui ,  Shu-hung Chung

发明人： Shu Yuen Ron Hui ,  Shu-hung Chung

IPC分类号： H05B37/02

CPC分类号： H05B41/392 ,  H05B41/2881 ,  H05B41/2883 ,  H05B41/2886 ,  H05B41/2921 ,  H05B41/2925 ,  H05B41/386 ,  H05B41/388 ,  Y02B20/204 ,  Y02B20/208

摘要： The present invention provides an electronic ballast for a high intensity discharge lamp such as a metal halide lamp. The ballast includes an inverter and a resonant circuit with an ignition capacitor between the resonant circuit and the lamp. The ignition capacitor serves to provide the necessary start-up energy and also serves to provide a low impedance discharge path. A single ignition capacitor may be sufficient, but if a long cable is used to connect the lamp to the ballast, then two ignition capacitors in parallel at opposite ends of the cable may be used. The ballast further provides means for monitoring and controlling lamp power by monitoring a nominally constant dc link voltage, and means for detecting short-circuit and open circuit conditions. A retrial mechanism is provided in the event of the lamp failing to ignite that includes a temporary disabling of the inverter in order to keep the rms lamp voltage low.

摘要翻译： 本发明提供一种用于诸如金属卤化物灯的高强度放电灯的电子镇流器。 镇流器包括反相器和在谐振电路和灯之间具有点火电容器的谐振电路。 点火电容器用于提供必要的启动能量，并且还用于提供低阻抗放电路径。 单个点火电容器可能是足够的，但是如果使用长电缆将灯连接到镇流器，则可以使用在电缆的相对端并联的两个点火电容器。 镇流器还提供了通过监视标称恒定的直流链路电压来监测和控制灯功率的装置，以及用于检测短路和开路条件的装置。 在灯不能点燃的情况下提供再试机制，其包括暂时禁用逆变器，以便将均匀的灯电压保持在低电平。

公开(公告)号：US09714759B2

公开(公告)日：2017-07-25

申请号：US13505483

申请日：2010-02-10

申请人： Henry Shu Hung Chung ,  Nan Chen

发明人： Henry Shu Hung Chung ,  Nan Chen

IPC分类号： H05B41/38 ,  F21V23/02 ,  H05B33/08 ,  F21Y115/10

CPC分类号： F21V23/02 ,  F21Y2115/10 ,  H05B33/0809 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B20/383

摘要： An apparatus that can operate with electronic ballasts (10) for electric discharge lamps to drive dc-powered lighting equipment (26) is provided. The apparatus is directly connected to the output of the electronic ballast (10) and is then used to control the power being supplied to the dc-powered lighting equipment (26). The maximum power delivered to the dc-powered lighting equipment (26) is substantially equal to the rated output power of the electronic ballast (10). A switching converter is acted as the necessary input impedance for the electronic ballast (10). Thus, the active power and reactive power drawn from the electronic ballast (10) can be controlled. The output of the switching converter provides dc power for the dc-powered lighting equipment (26).

公开(公告)号：US20120274237A1

公开(公告)日：2012-11-01

申请号：US13505483

申请日：2010-02-10

申请人： Henry Shu Hung Chung ,  Nan Chen

发明人： Henry Shu Hung Chung ,  Nan Chen

IPC分类号： H05B37/02

CPC分类号： F21V23/02 ,  F21Y2115/10 ,  H05B33/0809 ,  H05B33/0815 ,  Y02B20/346 ,  Y02B20/383

摘要： An apparatus that can operate with electronic ballasts (10) for electric discharge lamps to drive dc-powered lighting equipment (26) is provided. The apparatus is directly connected to the output of the electronic ballast (10) and is then used to control the power being supplied to the dc-powered lighting equipment (26). The maximum power delivered to the dc-powered lighting equipment (26) is substantially equal to the rated output power of the electronic ballast (10). A switching converter is acted as the necessary input impedance for the electronic ballast (10). Thus, the active power and reactive power drawn from the electronic ballast (10) can be controlled. The output of the switching converter provides dc power for the dc-powered lighting equipment (26).

摘要翻译： 提供一种能够与用于放电灯的电子镇流器（10）一起操作以驱动直流动力照明设备（26）的装置。 该装置直接连接到电子镇流器（10）的输出端，然后用于控制供应给直流供电的照明设备（26）的电力。 输送到直流照明设备（26）的最大功率基本上等于电子镇流器（10）的额定输出功率。 开关转换器用作电子镇流器（10）的必要输入阻抗。 因此，可以控制从电子镇流器（10）吸取的有功功率和无功功率。 开关转换器的输出为直流电源照明设备（26）提供直流电源。

公开(公告)号：US08189351B2

公开(公告)日：2012-05-29

申请号：US11710683

申请日：2007-02-23

申请人： Shu Hung Chung ,  Siu Wai Leung ,  Kee Ming Chan

发明人： Shu Hung Chung ,  Siu Wai Leung ,  Kee Ming Chan

IPC分类号： H02M3/335

CPC分类号： H02M3/28 ,  H02J7/0013 ,  H02J7/0065

摘要： A modular-based, zero-current-switched (ZCS), isolated full-bridge boost converter with multiple inputs is disclosed. Each converter module is used to match the connected input source and control the amount of power drawn from the source. The power from various sources are combined together and delivered to the load through a multiphase transformer. The input inductor of each boost-derived converter module keeps the input current constant and acts as a current source to drive the multiphase transformer through a phase-shifted-controlled full bridge converter. By connecting an auxiliary circuit across the full-bridge input in each module, the transformer leakage inductance and output capacitance of the switching devices are used to create resonant paths for facilitating zero-current-switching of all switching devices.

摘要翻译： 公开了一种基于模块化的零电流开关（ZCS），具有多个输入的隔离式全桥升压转换器。 每个转换器模块用于匹配连接的输入源，并控制从源中抽取的功率量。 来自各种源的功率被组合在一起并通过多相变压器传送到负载。 每个升压转换器模块的输入电感器保持输入电流恒定，并作为电流源，通过相移控制的全桥转换器驱动多相变压器。 通过在每个模块的全桥输入端连接辅助电路，开关器件的变压器漏感和输出电容用于产生谐振路径，以便于所有开关器件的零电流切换。

公开(公告)号：US20110057639A1

公开(公告)日：2011-03-10

申请号：US12556450

申请日：2009-09-09

申请人： Shu Hung Chung ,  Tin Ho Li

发明人： Shu Hung Chung ,  Tin Ho Li

IPC分类号： G05F3/04

CPC分类号： H02M1/34 ,  H02M2001/346 ,  Y02B70/1491

摘要： A passive lossless snubber cell for a switched-mode power converter comprises an energy absorbing circuit and an energy resetting circuit coupled to said energy absorbing circuit. The energy absorbing circuit is arranged to release energy stored in a snubber capacitor of the energy absorbing circuit to a storage capacitor of the energy resetting circuit through a resonant pathway of the snubber cell in response to a first switching action of a power converter transistor switch. The energy resetting circuit is arranged to release the energy stored therein to a part of a circuit of the power converter in response to a second switching action of the power converter transistor switch, the second switching action being a successive action to the first switching action. The passive lossless snubber cell has several advantages over existing snubbering techniques. First, it provides zero-current-switching (ZCS) and zero-voltage-switching (ZVS) conditions for turning on and off, respectively, the switch over a wide load range. Second, it does not introduce extra voltage stress on the switch. Third, by taking the ripple current through the switch into account, the peak switch current during the snubber resonance period is designed to be less than the designed switch current without the snubber. Hence, the proposed snubber does not introduce extra current stress on the switch.

摘要翻译： 用于开关模式功率转换器的无源无损耗缓冲单元包括耦合到所述能量吸收电路的能量吸收电路和能量复位电路。 能量吸收电路被布置成响应于功率转换器晶体管开关的第一开关动作，通过缓冲器单元的谐振路径释放存储在能量吸收电路的缓冲电容器中的能量到能量复位电路的存储电容器。 能量复位电路被布置成响应于功率转换器晶体管开关的第二开关动作而将存储在其中的能量释放到功率转换器的电路的一部分，第二开关动作是对第一开关动作的连续动作。 无源无损缓冲单元具有优于现有缓冲技术的几个优点。 首先，在宽负载范围内，分别提供开关的零电流开关（ZCS）和零电压开关（ZVS）条件，用于开关。 第二，它不会在开关上引入额外的电压应力。 第三，通过考虑开关中的纹波电流，缓冲器谐振周期期间的峰值开关电流设计为小于设计的开关电流而没有缓冲器。 因此，所提出的缓冲器不会在开关上引入额外的电流应力。

公开(公告)号：US20080205088A1

公开(公告)日：2008-08-28

申请号：US11710683

申请日：2007-02-23

申请人： Shu Hung Chung ,  Siu Wai Leung ,  Kee Ming Chan

发明人： Shu Hung Chung ,  Siu Wai Leung ,  Kee Ming Chan

IPC分类号： H02M3/335

CPC分类号： H02M3/28 ,  H02J7/0013 ,  H02J7/0065

摘要： A modular-based, zero-current-switched (ZCS), isolated full-bridge boost converter with multiple inputs is disclosed. Each converter module is used to match the connected input source and control the amount of power drawn from the source. The power from various sources are combined together and delivered to the load through a multiphase transformer. The input inductor of each boost-derived converter module keeps the input current constant and acts as a current source to drive the multiphase transformer through a phase-shifted-controlled full bridge converter. By connecting an auxiliary circuit across the full-bridge input in each module, the transformer leakage inductance and output capacitance of the switching devices are used to create resonant paths for facilitating zero-current-switching of all switching devices.

摘要翻译： 公开了一种基于模块化的零电流开关（ZCS），具有多个输入的隔离式全桥升压转换器。 每个转换器模块用于匹配连接的输入源，并控制从源中抽取的功率量。 来自各种源的功率被组合在一起并通过多相变压器传送到负载。 每个升压转换器模块的输入电感器保持输入电流恒定，并作为电流源，通过相移控制的全桥转换器驱动多相变压器。 通过在每个模块的全桥输入端连接辅助电路，开关器件的变压器漏感和输出电容用于产生谐振路径，以便于所有开关器件的零电流切换。

公开(公告)号：US08107268B2

公开(公告)日：2012-01-31

申请号：US12556450

申请日：2009-09-09

申请人： Shu Hung Chung ,  Tin Ho Li

发明人： Shu Hung Chung ,  Tin Ho Li

IPC分类号： H02H7/122

CPC分类号： H02M1/34 ,  H02M2001/346 ,  Y02B70/1491

摘要： A passive lossless snubber cell for a switched-mode power converter comprises an energy absorbing circuit and an energy resetting circuit coupled to said energy absorbing circuit. The energy absorbing circuit is arranged to release energy stored in a snubber capacitor of the energy absorbing circuit to a storage capacitor of the energy resetting circuit through a resonant pathway of the snubber cell in response to a first switching action of a power converter transistor switch. The energy resetting circuit is arranged to release the energy stored therein to a part of a circuit of the power converter in response to a second switching action of the power converter transistor switch, the second switching action being a successive action to the first switching action. The passive lossless snubber cell has several advantages over existing snubbering techniques. First, it provides zero-current-switching (ZCS) and zero-voltage-switching (ZVS) conditions for turning on and off, respectively, the switch over a wide load range. Second, it does not introduce extra voltage stress on the switch. Third, by taking the ripple current through the switch into account, the peak switch current during the snubber resonance period is designed to be less than the designed switch current without the snubber. Hence, the proposed snubber does not introduce extra current stress on the switch.

摘要翻译： 用于开关模式功率转换器的无源无损耗缓冲单元包括耦合到所述能量吸收电路的能量吸收电路和能量复位电路。 能量吸收电路被布置成响应于功率转换器晶体管开关的第一开关动作，通过缓冲器单元的谐振路径释放存储在能量吸收电路的缓冲电容器中的能量到能量复位电路的存储电容器。 能量复位电路被布置成响应于功率转换器晶体管开关的第二开关动作而将存储在其中的能量释放到功率转换器的电路的一部分，第二开关动作是对第一开关动作的连续动作。 无源无损缓冲单元具有优于现有缓冲技术的几个优点。 首先，在宽负载范围内，分别提供开关的零电流开关（ZCS）和零电压开关（ZVS）条件，用于开关。 第二，它不会在开关上引入额外的电压应力。 第三，通过考虑开关中的纹波电流，缓冲器谐振周期期间的峰值开关电流设计为小于设计的开关电流而没有缓冲器。 因此，所提出的缓冲器不会在开关上引入额外的电流应力。

公开(公告)号：US20100283438A1

公开(公告)日：2010-11-11

申请号：US12435979

申请日：2009-05-05

申请人： Henry Shu Hung CHUNG ,  Wai To YAN

发明人： Henry Shu Hung CHUNG ,  Wai To YAN

IPC分类号： G05F1/59

CPC分类号： G05F1/575 ,  H02M3/156

摘要： An output compensator for a regulator is provided that can improve the dynamic response of a regulator, and which does not require the redesigning of the power conversion stage or control stage of the regulator, but simple circuit connection of the compensator circuit to the output stage of the regulator. The compensator senses an output signal at a passive component at an output of the regulator; generates a compensating signal based on a difference signal, the difference being a difference between a level of a reference signal for the regulator and the sensed output signal; and applies the compensating signal to the passive output component to reduce the difference between the level of the reference signal and the sensed output signal. The passive output component may be, for example, a capacitor or an inductor, depending on the operation of the regulator.

摘要翻译： 提供了一种用于调节器的输出补偿器，其可以改善调节器的动态响应，并且不需要重新设计调节器的功率转换级或控制级，而是补偿器电路到输出级的简单电路连接 监管者。 补偿器在调节器的输出处感测无源部件处的输出信号; 基于差分信号生成补偿信号，该差是调节器的参考信号的电平与所感测的输出信号之间的差; 并且将补偿信号施加到无源输出分量以减小参考信号的电平与感测的输出信号之间的差。 取决于调节器的操作，无源输出部件可以是例如电容器或电感器。

公开(公告)号：US20100283437A1

公开(公告)日：2010-11-11

申请号：US12435954

申请日：2009-05-05

申请人： Henry Shu Hung CHUNG ,  Wai To YAN

发明人： Henry Shu Hung CHUNG ,  Wai To YAN

IPC分类号： G05F5/00

CPC分类号： H02M1/44 ,  H02M3/155

摘要： Reducing, suppressing or canceling series parasitic inductance and/or resistive effects that affect the frequency response of components, elements and/or circuits in an electronic circuit or system that exhibit capacitance is disclosed. Noise generated by series parasitic inductance and/or parasitic resistance of the components, the physical orientation of the components, and/or the layout of components, devices and/or conductive tracks (board traces) on printed circuit boards within an electronic circuit or system is reduced, suppressed or canceled. The reduction, suppression or cancellation is achieved by adding a voltage source in series with a part or component of the electronic circuit or system that exhibits capacitance, the current source being adapted to deliver a compensating voltage of roughly equal magnitude and roughly opposite phase to parasitic voltage associated with the part or component.

摘要翻译： 公开了降低，抑制或消除影响电子电路或系统中组件，元件和/或电路的频率响应的串联寄生电感和/或电阻效应。 由组件的串联寄生电感和/或寄生电阻产生的噪声，组件的物理取向，和/或电子电路或系统内的印刷电路板上的部件，器件和/或导电迹线（电路板迹线）的布局 减少，抑制或取消。 减少，抑制或消除是通过将电压源与电子电路或系统的显示电容的部分或部件串联而实现的，该电流源适于传送大致相等的补偿电压并且大致相反的相位与寄生 与部件或部件相关联的电压。