RESONANT CONVERTER AND VOLTAGE STABILIZING METHOD THEREOF
    31.
    发明申请
    RESONANT CONVERTER AND VOLTAGE STABILIZING METHOD THEREOF 有权
    谐波变换器及其稳压方法

    公开(公告)号:US20070285952A1

    公开(公告)日:2007-12-13

    申请号:US11748241

    申请日:2007-05-14

    CPC classification number: H02M3/33576 Y02B70/1433 Y02P80/112

    Abstract: A resonant converter and voltage stabilizing method thereof are provided. The resonant converter includes a converting stage circuit, a diode-rectifying stage circuit, a filter and load stage circuit, a logic circuit, a driving circuit, and an energy-recycling circuit. The method includes steps of recycling an energy from the filter and load stage circuit to the converting stage circuit when the resonant converter is light- or zero-loaded.

    Abstract translation: 提供了一种谐振变换器及其稳压方法。 谐振转换器包括转换级电路,二极管整流级电路,滤波器和负载级电路,逻辑电路,驱动电路和能量循环电路。 该方法包括以下步骤:当谐振转换器为轻负载或零负载时,将来自滤波器和负载级电路的能量再循环到转换级电路。

    Multi-phase switching power conversion circuit
    32.
    发明授权
    Multi-phase switching power conversion circuit 有权
    多相开关电源转换电路

    公开(公告)号:US09148064B2

    公开(公告)日:2015-09-29

    申请号:US12831828

    申请日:2010-07-07

    CPC classification number: H02M3/33561 H02M2003/1586 Y02B70/1425 Y02B70/1433

    Abstract: A multi-phase switching power conversion circuit has at least three phases and includes a plurality of switching circuits, a plurality of transformers, a plurality of output rectifier circuits, a resonant network and a control circuit. The resonant network includes a plurality of symmetrical terminals and a plurality of phase branches, which are connected in a multi-phase symmetrical relationship. Each of the symmetrical terminals is connected to the output side of respective switching circuits. The phase branches are connected to a resonant common terminal such that the phase branches are in a star connection. The resonant common terminal is different from the positive terminal and the first reference terminal of the input voltage source. The control circuit is connected to an output terminal of the multi-phase switching power conversion circuit and a plurality of the control terminals of the plurality of switching circuits. The switching circuits are conducted or shut off according to the output voltage under control of the control circuit, so that the electrical energy of the input voltage source is selectively transmitted to the resonant network.

    Abstract translation: 多相开关电源转换电路具有至少三相,并且包括多个开关电路,多个变压器,多个输出整流电路,谐振网络和控制电路。 谐振网络包括以多相对称关系连接的多个对称端子和多个相位分支。 每个对称端子连接到各个开关电路的输出侧。 相分支连接到谐振公共端子,使得相分支处于星形连接。 谐振公共端与输入电压源的正端和第一参考端不同。 控制电路连接到多相开关电力转换电路的输出端子和多个开关电路的多个控制端子。 开关电路根据控制电路控制下的输出电压进行导通或切断,使得输入电压源的电能选择性地传输到谐振网络。

    Power factor correction circuit
    34.
    发明授权
    Power factor correction circuit 有权
    功率因数校正电路

    公开(公告)号:US09001537B2

    公开(公告)日:2015-04-07

    申请号:US13523615

    申请日:2012-06-14

    Abstract: A power factor correction (PFC) circuit includes an AC power, a first bridge arm and a second bridge arm. The first bridge arm includes first and second switches connected in series with each other. A second terminal of the first switch is connected to a first terminal of the second switch, and coupled to a first end of the AC power via a first inductor. The second bridge arm includes third and fourth switches connected in series with each other. A second terminal of the third switch is connected to a first terminal of the fourth switch and a second end of the AC power. The third and fourth switches operate in ON/OFF states by use of a control signal having an operation frequency consistent with that of the AC power. The on-state resistance of the third and fourth switches is lower than that of the first or second switch.

    Abstract translation: 功率因数校正(PFC)电路包括AC电力,第一桥臂和第二桥臂。 第一桥臂包括彼此串联连接的第一和第二开关。 第一开关的第二端子连接到第二开关的第一端子,并且经由第一电感器耦合到AC电力的第一端。 第二桥臂包括彼此串联连接的第三和第四开关。 第三开关的第二端子连接到第四开关的第一端子和交流电源的第二端。 第三和第四开关通过使用具有与AC电力的操作频率一致的操作频率的控制信号来操作ON / OFF状态。 第三和第四开关的导通电阻低于第一或第二开关的导通电阻。

    Voltage regulation circuit and light emitting didoe driving apparatus having the same
    35.
    发明授权
    Voltage regulation circuit and light emitting didoe driving apparatus having the same 有权
    电压调节电路和具有该电压调节电路的发光飞镖驱动装置

    公开(公告)号:US08917035B2

    公开(公告)日:2014-12-23

    申请号:US13541680

    申请日:2012-07-04

    Abstract: A voltage regulation circuit includes a voltage conversion module, an LED driving module and a control module. The voltage conversion module is operable to receive and convert the first voltage to a second voltage. Each LED driving loop of the LED driving module has a current regulator and an LED string. The control module is operable to output a control signal according to the received input signal which reflects the current flowing through the LED driving module. The voltage conversion module regulates the second voltage according to the control signal, such that the regulated second voltage still keeps the brightness of the LED string of each LED driving loop unchanged.

    Abstract translation: 电压调节电路包括电压转换模块,LED驱动模块和控制模块。 电压转换模块可操作以接收第一电压并将其转换为第二电压。 LED驱动模块的每个LED驱动环路具有电流调节器和LED串。 控制模块可操作以根据接收到的反映流过LED驱动模块的电流的输入信号输出控制信号。 电压转换模块根据控制信号调节第二电压,使得调节的第二电压仍保持每个LED驱动环路的LED串的亮度不变。

    Driving circuit structure for light emitting diodes
    36.
    发明授权
    Driving circuit structure for light emitting diodes 有权
    用于发光二极管的驱动电路结构

    公开(公告)号:US08729818B2

    公开(公告)日:2014-05-20

    申请号:US13241233

    申请日:2011-09-23

    CPC classification number: H05B33/0815 H02M3/33561 Y02B70/1433

    Abstract: The invention discloses a driving circuit structure for driving light-emitting loads. The driving circuit structure may include a power supplying device, a signal processing device and an impedance balancing device and a dimming control unit. The power supplying device is used for supplying an alternating current power supply. The signal processing device is used for converting the alternating current power supply into a direct current power supply, so as to drive the light-emitting loads. The impedance balancing device is used for balancing an alternating current magnitude of the alternating current power supply, so as to stabilize a direct current magnitude of the direct current power supply for driving the light-emitting loads. The dimming control unit is capable of controlling output luminance of the light-emitting loads.

    Abstract translation: 本发明公开了一种用于驱动发光负载的驱动电路结构。 驱动电路结构可以包括供电装置,信号处理装置和阻抗平衡装置以及调光控制装置。 供电装置用于提供交流电源。 信号处理装置用于将交流电源转换为直流电源,以驱动发光负载。 阻抗平衡装置用于平衡交流电源的交流电流大小,以便稳定用于驱动发光负载的直流电源的直流电流幅值。 调光控制单元能够控制发光负载的输出亮度。

    Coil assembly and magnetic element with shielding function
    37.
    发明授权
    Coil assembly and magnetic element with shielding function 有权
    线圈组件和磁性元件具有屏蔽功能

    公开(公告)号:US08593245B2

    公开(公告)日:2013-11-26

    申请号:US12787893

    申请日:2010-05-26

    CPC classification number: H01F27/2885

    Abstract: A coil assembly includes at least one insulated wire and an electromagnetic interference shielding layer. The insulated wire is wound into a winding coil part. The winding coil part includes a first wire-outlet segment, a second wire-outlet segment and a central through-hole. The electromagnetic interference shielding layer is formed on the winding coil part for shielding the insulated wire. The electromagnetic interference shielding layer has lateral projection profile on the winding coil part. The electromagnetic interference shielding layer has a radial gap such that the electromagnetic interference shielding layer is a non-conducting loop.

    Abstract translation: 线圈组件包括至少一个绝缘线和电磁干扰屏蔽层。 绝缘线缠绕在绕组线圈部分。 绕组线圈部分包括第一线出口段,第二线出口段和中心通孔。 电磁干扰屏蔽层形成在用于屏蔽绝缘线的绕组线圈部分上。 电磁干扰屏蔽层在绕组线圈部分具有侧向突出轮廓。 电磁干扰屏蔽层具有径向间隙,使得电磁干扰屏蔽层是非导通环路。

    POWER FACTOR CORRECTION CIRCUIT
    38.
    发明申请
    POWER FACTOR CORRECTION CIRCUIT 有权
    功率因数校正电路

    公开(公告)号:US20130257390A1

    公开(公告)日:2013-10-03

    申请号:US13523615

    申请日:2012-06-14

    Abstract: A power factor correction (PFC) circuit includes an AC power, a first bridge arm and a second bridge arm. The first bridge arm includes first and second switches connected in series with each other. A second terminal of the first switch is connected to a first terminal of the second switch, and coupled to a first end of the AC power via a first inductor. The second bridge arm includes third and fourth switches connected in series with each other. A second terminal of the third switch is connected to a first terminal of the fourth switch and a second end of the AC power. The third and fourth switches operate in ON/OFF states by use of a control signal having an operation frequency consistent with that of the AC power. The on-state resistance of the third and fourth switches is lower than that of the first or second switch.

    Abstract translation: 功率因数校正(PFC)电路包括AC电力,第一桥臂和第二桥臂。 第一桥臂包括彼此串联连接的第一和第二开关。 第一开关的第二端子连接到第二开关的第一端子,并且经由第一电感器耦合到AC电力的第一端。 第二桥臂包括彼此串联连接的第三和第四开关。 第三开关的第二端子连接到第四开关的第一端子和交流电源的第二端。 第三和第四开关通过使用具有与AC电力的操作频率一致的操作频率的控制信号来操作ON / OFF状态。 第三和第四开关的导通电阻低于第一或第二开关的导通电阻。

    HIGH-POWER MEDIUM-VOLTAGE DRIVE POWER CELL
    39.
    发明申请
    HIGH-POWER MEDIUM-VOLTAGE DRIVE POWER CELL 有权
    大功率中压驱动电源

    公开(公告)号:US20130100716A1

    公开(公告)日:2013-04-25

    申请号:US13415480

    申请日:2012-03-08

    Abstract: The present invention provides a high-power medium-voltage drive power cell, which comprises: a rectifier module for rectifying the three-phase AC input voltage to get a DC voltage; an IGBT (Insulated Gate Bipolar Transistor) inverter bridge connected to capacitors for converting the DC voltage into an AC voltage of which the frequency, the amplitude and the phase are adjustable; a bypass module connected to the IGBT inverter bridge for providing the bypass function when the IGBT inverter bridge works in an abnormal state; and a heat pipe heat sink having a base plate on both sides of which power elements of the high-power medium-voltage drive power cell are disposed.

    Abstract translation: 本发明提供了一种大功率中压驱动电池,其特征在于,具有整流模块,用于对三相交流输入电压进行整流,得到直流电压; 连接到电容器的IGBT(绝缘栅双极晶体管)逆变桥,用于将DC电压转换成频率,幅度和相位可调的AC电压; 连接到IGBT逆变桥的旁路模块,用于在IGBT逆变桥工作在异常状态时提供旁路功能; 以及设置有大功率中压驱动电力单元的功率元件的两侧具有基板的热管散热器。

    DC CHOPPER AND DC CHOPPING METHOD FOR DOUBLY FED INDUCTION GENERATOR SYSTEM
    40.
    发明申请
    DC CHOPPER AND DC CHOPPING METHOD FOR DOUBLY FED INDUCTION GENERATOR SYSTEM 有权
    直流斩波器和直流斩波方法,用于双相感应发电机系统

    公开(公告)号:US20130049707A1

    公开(公告)日:2013-02-28

    申请号:US13532356

    申请日:2012-06-25

    CPC classification number: H02P6/00

    Abstract: A DC chopper comprising a control unit and a power circuit and a DC chopping method for a DFIG (doubly fed induction generator) system are provided. The input terminal of the control unit is coupled to a DC capacitor of a converter to detect a DC voltage. The power circuit includes input terminals, an overvoltage protection module, a rectifier module and output terminals. The overvoltage protection module comprises at least one discharge unit formed from a discharge resistor and a switch element, and the rectifier module is coupled in parallel to the overvoltage protection module. When a grid voltage drops, the control unit outputs a corresponding control signal to drive the switch element to be ON or OFF, and the output terminal of the power circuit absorbs a portion of rotor inrush current, so as to impose over-current protection.

    Abstract translation: 提供了包括控制单元和电源电路以及用于DFIG(双馈感应发电机)系统的直流斩波方法的直流斩波器。 控制单元的输入端耦合到转换器的直流电容器,以检测直流电压。 电源电路包括输入端子,过压保护模块,整流模块和输出端子。 过电压保护模块包括由放电电阻器和开关元件形成的至少一个放电单元,并且整流器模块并联耦合到过电压保护模块。 当电网电压下降时,控制单元输出相应的控制信号以驱动开关元件导通或关断,并且电源电路的输出端吸收一部分转子浪涌电流,从而施加过电流保护。

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