Phase selection circuit for three phase power converter and method of
operation thereof
    11.
    发明授权
    Phase selection circuit for three phase power converter and method of operation thereof 失效
    三相电力变换器相位选择电路及其运行方法

    公开(公告)号:US6046915A

    公开(公告)日:2000-04-04

    申请号:US118569

    申请日:1998-07-17

    CPC classification number: H02M3/158 H02M1/4216 Y02B70/126

    Abstract: An active circuit for delivering three phase AC input power received from a three phase rectifier to a boost converter and a method of operating the same. In one embodiment, the active circuit includes a phase selection switching circuit, coupled to the rectifier, that selects an inner phase of the three phase AC input power. The active circuit also includes a switching network, coupled to the phase selection switching circuit and the rectifier, that controls a current waveshape of the inner phase and a current waveshape of at least one other phase, thereby to reduce harmonics associated with three phase AC input current.

    Abstract translation: 用于将从三相整流器接收的三相交流输入电力输送到升压转换器的有源电路及其操作方法。 在一个实施例中,有源电路包括耦合到整流器的相选择开关电路,其选择三相AC输入功率的内相。 有源电路还包括耦合到相选择开关电路和整流器的开关网络,其控制内相的电流波形和至少一个其它相的电流波形,从而减少与三相AC输入相关联的谐波 当前。

    Switching network and method of reducing input current total harmonic
distortion for a boost converter
    12.
    发明授权
    Switching network and method of reducing input current total harmonic distortion for a boost converter 失效
    降压升压转换器的输入电流总谐波失真的切换网络和方法

    公开(公告)号:US6038151A

    公开(公告)日:2000-03-14

    申请号:US118110

    申请日:1998-07-17

    CPC classification number: H02M1/4216 Y02B70/126

    Abstract: For use with a boost converter having first, second and third input inductors, a switching network, method of reducing input current total harmonic distortion (THD) associated with the boost converter, and boost converter employing the switching network and method. In one embodiment, the switching network includes first and second switches coupled between corresponding rails of the boost converter. The switching network also includes first, second and third L-C resonant networks wye-coupled to a node located between the first and second switches and coupled to the first, second and third input inductors, respectively. The first and second switches and the first, second and third L-C resonant networks cooperate to create resonant voltages across, and induce phase currents through, the first, second and third input inductors to reduce input current THD associated with the boost converter.

    Abstract translation: 用于具有第一,第二和第三输入电感器的升压转换器,开关网络,降低与升压转换器相关联的输入电流总谐波失真(THD)的方法,以及采用开关网络和方法的升压转换器。 在一个实施例中,开关网络包括耦合在升压转换器的相应导轨之间的第一和第二开关。 开关网络还包括分别耦合到位于第一和第二开关之间的节点并耦合到第一,第二和第三输入电感器的第一,第二和第三L-C谐振网络。 第一和第二开关以及第一,第二和第三L-C谐振网络协作以产生跨越第一,第二和第三输入电感器的谐振电压并且引起相电流,以减小与升压转换器相关联的输入电流THD。

    Dual-output boost converter having enhanced input operating range
    13.
    发明授权
    Dual-output boost converter having enhanced input operating range 失效
    双输出升压转换器具有增强的输入工作范围

    公开(公告)号:US5894214A

    公开(公告)日:1999-04-13

    申请号:US975398

    申请日:1997-11-20

    Applicant: Yimin Jiang

    Inventor: Yimin Jiang

    Abstract: A boost converter for converting an input voltage received at an input thereof into first and second output voltages provided at first and second outputs thereof, respectively, and a method of operating the boost converter. In one embodiment, the boost converter includes: (1) a first switching circuit coupled to a first rail of the input and having a first switch and a first capacitor coupled in parallel, (2) a second switching circuit coupled to a second rail of the input and having a second switch and a second capacitor coupled in parallel, (3) a contactor, coupled between the first and second switching circuits and the first and second rails, that is controllable to achieve alternative first and second states in which: (3a) in the first state, the first and second switching circuits are coupled in series across the source of AC power and (3b) in the second state, the first and second switching circuits are coupled in parallel across the source of AC power to reduce an overall loss associated with the first and second switches and (4) a boost inductor, coupled in series with first and second switching circuits, that provides a conductive path for the input DC voltage to flow through the first and second switching circuits to charge the first and second capacitors, respectively.

    Abstract translation: 一种升压转换器,用于将在其输入处接收的输入电压分别转换成在其第一和第二输出处提供的第一和第二输出电压,以及操作升压转换器的方法。 在一个实施例中,升压转换器包括:(1)耦合到输入的第一导轨的第一开关电路,并具有并联耦合的第一开关和第一电容器,(2)耦合到第二开关 所述输入并具有并联耦合的第二开关和第二电容器,(3)耦合在所述第一和第二开关电路与所述第一和第二导轨之间的接触器,其可控制以实现替代的第一和第二状态,其中: 如图3a所示,在第一状态下,第一和第二开关电路在第二状态下串联耦合在交流电源上,(3b),第一和第二开关电路并联耦合在交流电源上以减少 与第一和第二开关相关联的总体损耗和(4)与第一和第二开关电路串联耦合的升压电感器,其提供用于输入DC电压流过第一和第二开关的导电路径 开关电路分别对第一和第二电容器充电。

    Three-phase boost converter having wye-connected input capacitors and
method of operation thereof
    14.
    发明授权
    Three-phase boost converter having wye-connected input capacitors and method of operation thereof 失效
    具有Y形连接输入电容器的三相升压转换器及其操作方法

    公开(公告)号:US5886891A

    公开(公告)日:1999-03-23

    申请号:US118550

    申请日:1998-07-17

    CPC classification number: H02M1/4216 Y02B70/126

    Abstract: A three-phase boost converter having wye-connected input capacitors and a method of operating the same. The boost converter includes first, second and third phase inputs and an output. In one embodiment, the boost converter includes first, second and third inductors coupled to the first, second and third phase inputs, respectively, and operable in a discontinuous conduction mode (DCM). The boost converter further includes first and second switches coupled between corresponding rails of the output. The boost converter still further includes first, second and third capacitors coupled between the first, second and third phase inputs, respectively, and a node between the first and second switches. The first and second switches cooperate progressively to employ a voltage across the rails less a voltage across the first, second and third capacitors to discharge currents through the first, second and third inductors, respectively, and thereby reduce input current THD on all three of the phase inputs.

    Abstract translation: 一种三相升压转换器,具有连接有输入电压的输入电容器及其操作方法。 升压转换器包括第一,第二和第三相输入端和输出端。 在一个实施例中,升压转换器包括分别耦合到第一,第二和第三相输入端的第一,第二和第三电感器,并且可在不连续导通模式(DCM)中操作。 升压转换器还包括耦合在输出的相应导轨之间的第一和第二开关。 升压转换器还包括分别耦合在第一,第二和第三相输入之间的第一,第二和第三电容器以及第一和第二开关之间的节点。 第一和第二开关逐渐协调以跨越轨道的电压减去第一,第二和第三电容器两端的电压,以分别通过第一,第二和第三电感器放电电流,从而减少输入电流THD 相位输入。

    Multiple output DC to DC converter
    15.
    发明授权
    Multiple output DC to DC converter 失效
    多输出DC到DC转换器

    公开(公告)号:US5862042A

    公开(公告)日:1999-01-19

    申请号:US943362

    申请日:1997-10-03

    Applicant: Yimin Jiang

    Inventor: Yimin Jiang

    CPC classification number: H02M3/33561 Y10T307/297 Y10T307/713

    Abstract: A multiple output dc to dc converter is described that has multiple regulated output voltages. This is achieved by using a common subcircuit in conjunction with multiple input subcircuits to power multiple output circuits. The common subcircuit is used with an input subcircuit to form a converter input circuit which with a corresponding output circuit produces an output voltage. Any number of input subcircuits can be used with the common subcircuit to produce a corresponding amount of output voltages. The multiple output dc to dc converter described produces output voltage of the same quality as using parallel converters but with a cost and complexity similar to that of using inferior secondary side switches for auxiliary outputs.

    Abstract translation: 描述了具有多个调节输出电压的多输出dc-dc转换器。 这通过使用共同的分支电路与多个输入子电路结合来为多个输出电路供电来实现。 公共子电路与输入分支电路一起使用,以形成转换器输入电路,其中相应的输出电路产生输出电压。 任何数量的输入子电路都可以与公共子电路一起使用,以产生相应的输出电压量。 所描述的多输出DC-DC转换器产生与使用并行转换器相同质量的输出电压,但成本和复杂度类似于使用辅助输出的劣质次级侧开关。

    Power factor control for switched mode rectifiers with improved
representing of currents in EMI capacitive elements
    16.
    发明授权
    Power factor control for switched mode rectifiers with improved representing of currents in EMI capacitive elements 失效
    开关模式整流器的功率因数控制,改善了EMI电容元件中电流的表示

    公开(公告)号:US5777866A

    公开(公告)日:1998-07-07

    申请号:US789125

    申请日:1997-01-27

    CPC classification number: H02M1/44 H02M1/4225 Y02B70/126

    Abstract: A power factor correction system with an EMI line filter at the input includes circuitry to sense the capacitor current of the EMI filter to improve the accuracy of the power factor enhancement. The circuitry consists of a current sensing means connected after the EMI filter, and a voltage sensing capacitor which derives its input signal from a pair of diodes separate from the conventional 4-diode rectifier bridge, which are connected either before or after the EMI filter. The current-sensing means, which may be a resistor, and the voltage-sensing capacitor are tightly coupled to the current control loop of the power factor correction system to compensate for the current in the EMI filter capacitors.

    Abstract translation: 在输入端具有EMI线路滤波器的功率因数校正系统包括检测EMI滤波器的电容电流以提高功率因数增强精度的电路。 该电路包括连接在EMI滤波器之后的电流检测装置,以及一个电压感测电容器,它从与传统的四极管整流桥分开的一对二极管得到其输入信号,这些二极管在EMI滤波器之前或之后连接。 电流感测装置(其可以是电阻器)和电压感测电容器紧密耦合到功率因数校正系统的电流控制环路,以补偿EMI滤波电容器中的电流。

    Low trickle current startup bias circuit and method of operation thereof
    19.
    发明授权
    Low trickle current startup bias circuit and method of operation thereof 失效
    低滴流电流启动偏置电路及其操作方法

    公开(公告)号:US6055166A

    公开(公告)日:2000-04-25

    申请号:US193042

    申请日:1998-11-16

    CPC classification number: H02M1/36 Y10S323/901

    Abstract: For use with a power converter having a power supply control circuit, a current startup bias circuit and a method of operating the same. In one embodiment, the circuit includes: (1) a charge reservoir that receives and stores a trickle current during a startup period of the power converter, a voltage of the charge reservoir increasing as the charge reservoir stores the trickle current and (2) a latch, coupled to the charge reservoir, that activates when the voltage reaches a threshold to couple the charge reservoir to the power supply control circuit and initiate operation thereof.

    Abstract translation: 用于具有电源控制电路的电力转换器,电流启动偏置电路及其操作方法。 在一个实施例中,电路包括:(1)电荷储存器,其在功率转换器的启动期间接收和存储涓流电流,电荷储存器的电压随着电荷储存器存储涓流电流而增加;(2) 闩锁,耦合到电荷储存器,当电压达到阈值时激活,以将电荷储存器耦合到电源控制电路并启动其操作。

    Boost converter having reduced output voltage and method of operation
thereof
    20.
    发明授权
    Boost converter having reduced output voltage and method of operation thereof 失效
    升压转换器具有降低的输出电压及其操作方法

    公开(公告)号:US06046576A

    公开(公告)日:2000-04-04

    申请号:US72390

    申请日:1998-05-04

    Applicant: Yimin Jiang

    Inventor: Yimin Jiang

    CPC classification number: H02M1/4216 H02M3/155 Y02B70/126

    Abstract: For use with a boost converter having a boost inductor couplable to a source of electrical power, a rectifier coupled to the boost inductor and a boost switch coupled across the rectifier, the boost converter operable in discontinuous mode, a circuit for, and method of, providing a reduced output voltage from the boost converter. In one embodiment, the circuit includes an autotransformer, coupled across an output of the boost converter, having an intermediate tap that provides a reduced output voltage at the output.

    Abstract translation: 为了与具有可耦合到电力源的升压电感器的升压转换器一起使用,耦合到升压电感器的整流器和耦合在整流器两端的升压开关,可不连续模式工作的升压转换器, 提供来自升压转换器的降低的输出电压。 在一个实施例中,电路包括耦合在升压转换器的输出端的自耦变压器,具有在输出端提供降低的输出电压的中间抽头。

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