Boost converter having extended holdup time and method of operation
    21.
    发明授权
    Boost converter having extended holdup time and method of operation 失效
    升压转换器具有延长的保持时间和操作方法

    公开(公告)号:US6043705A

    公开(公告)日:2000-03-28

    申请号:US048069

    申请日:1998-03-25

    Applicant: Yimin Jiang

    Inventor: Yimin Jiang

    CPC classification number: H02M1/4208 H02M2001/0096 Y02B70/126

    Abstract: For use in a boost converter having a boost inductor coupled between an input and an output of the boost converter and an output capacitor coupled between rails of the output, an energy storage circuit for, and method of, extending a holdup time of the boost converter. In one embodiment, the energy storage circuit includes: (1) a holdup capacitor coupled to a first rail of the input, (2) a holdup switch, coupled to a second rail of the input and the holdup capacitor, capable of closing during a holdup mode to allow the holdup capacitor to discharge current into the input and (3) a voltage stabilizing circuit, coupled between the holdup capacitor and the output capacitor, that: (3a) when the boost converter is in a normal mode, provides a substantially impeded path for charge current to flow from the output capacitor to charge the holdup capacitor, and (3b) when the boost converter is in an initial phase of the holdup mode, provides a substantially unimpeded path for holdup current to flow from the holdup capacitor to the output capacitor prior to the closing of the holdup switch.

    Abstract translation: 为了用于具有耦合在升压转换器的输入和输出之间的升压电感器和耦合在输出的导轨之间的输出电容器的升压转换器,用于延长升压转换器的保持时间的能量存储电路以及延长其延时的方法 。 在一个实施例中,能量存储电路包括:(1)耦合到输入的第一导轨的保持电容器,(2)耦合到输入端的第二导轨和保持电容器的保持开关,能够在 保持模式以允许保持电容器将电流放电到输入端,以及(3)耦合在保持电容器和输出电容器之间的稳压电路:(3a)当升压转换器处于正常模式时,提供基本上 阻塞的路径用于充电电流从输出电容器流动以对保持电容器充电,以及(3b)当升压转换器处于保持模式的初始阶段时,提供基本上不受阻碍的路径,用于保持电流从保持电容器流向 在保持开关闭合之前的输出电容器。

    Power supply employing circulating capacitor and method of operation
thereof
    22.
    发明授权
    Power supply employing circulating capacitor and method of operation thereof 失效
    采用循环电容器的电源及其运行方法

    公开(公告)号:US6038147A

    公开(公告)日:2000-03-14

    申请号:US191441

    申请日:1998-11-12

    CPC classification number: H02M7/4807 H02M3/33561

    Abstract: A power supply and method of operation thereof. In one embodiment, the power supply includes: (1) a primary side power switch, (2) an isolation transformer having a primary winding coupled to the primary side power switch, the primary side power switch conducting intermittently to transfer current from an input of the power supply to the isolation transformer, (3) a secondary side power switch, coupled to a secondary winding of the isolation transformer, that is operable to conduct within a conduction period of the primary side power switch to transfer current from the isolation transformer to an output of the power supply, a portion of the current being contained within the power supply during a nonconduction period of the secondary side power switch and (4) a capacitor, coupled to the secondary side power switch, that, circulates the portion toward the output during the nonconduction period.

    Abstract translation: 电源及其操作方法。 在一个实施例中,电源包括:(1)初级侧电源开关,(2)隔离变压器,其具有耦合到初级侧电源开关的初级绕组,所述初级侧电源开关间断地传导电流从 隔离变压器的电源,(3)耦合到隔离变压器的次级绕组的次级侧电源开关,其可操作以在初级侧电源开关的导通时段内传导,以将电流从隔离变压器传输到 电源的输出,在次级侧电源开关的非导通期间,电流的一部分被包含在电源内;以及(4)耦合到次级侧电源开关的电容器,其将该部分朝向 产量在非传导期。

    DC/DC converters having dual, EMI-quiet outputs
    23.
    发明授权
    DC/DC converters having dual, EMI-quiet outputs 失效
    DC / DC转换器具有双路,EMI静音输出

    公开(公告)号:US5914588A

    公开(公告)日:1999-06-22

    申请号:US957918

    申请日:1997-10-27

    Applicant: Yimin Jiang

    Inventor: Yimin Jiang

    Abstract: Various DC/DC converter topologies having improved electromagnetic interference (EMI) characteristics and methods of providing dual DC outputs with such converters. One embodiment of one DC/DC converter having dual, EMI-quiet outputs includes: (1) a first subcircuit, having a series-coupled first switch, first inductor and first capacitor and an output across the first capacitor, coupled between first and second DC input rails, (2) a second subcircuit, having a second switch, second inductor and second capacitor and an output across the second capacitor, coupled between the first and second DC input rails in anti-parallel with the first subcircuit, (3) a first diode coupling a node between the first switch and the first inductor and a node between the second inductor and the second capacitor and (4) a second diode coupling a node between the first inductor and the first capacitor and a second node between the second switch and the second inductor. A further embodiment adds third and fourth series-coupled capacitors coupling the first and second DC input rails and replaces the first and second diodes with: (1) a first converter diode coupling a node between the first switch and the first inductor and a node between the second switch and the second inductor, (2) a first snubber diode coupling a node between the third and fourth capacitors and the node between the first switch and the first inductor and (3) a second snubber diode coupling the node between the third and fourth capacitors and the node between the second switch and the second inductor.

    Abstract translation: 具有改进的电磁干扰(EMI)特性的各种DC / DC转换器拓扑以及用这种转换器提供双直流输出的方法。 具有双重EMI噪声输出的一个DC / DC转换器的一个实施例包括:(1)第一子电路,具有串联耦合的第一开关,第一电感器和第一电容器以及跨第一电容器的输出,耦合在第一和第二 (2)第二子电路,具有第二开关,第二电感器和第二电容器以及穿过第二电容器的输出端,与第一子电路反平行地耦合在第一和第二DC输入轨道之间;(3) 耦合在第一开关和第一电感器之间的节点和第二电感器和第二电容器之间的节点的第一二极管和(4)耦合第一电感器和第一电容器之间的节点的第二二极管和第二电容器之间的第二节点 开关和第二个电感。 另一实施例添加了耦合第一和第二DC输入导轨的第三和第四串联耦合电容器,并用以下方式代替第一和第二二极管:(1)耦合第一开关和第一电感器之间的节点的第一转换器二极管和 第二开关和第二电感器,(2)耦合在第三和第四电容器之间的节点与第一开关和第一电感器之间的节点的第一缓冲二极管和(3)耦合第三和第二电感器之间的节点的第二缓冲二极管 第四电容器和第二开关和第二电感器之间的节点。

    Three phase rectifier using three single phase converters and a single
DC/DC converter
    24.
    发明授权
    Three phase rectifier using three single phase converters and a single DC/DC converter 失效
    三相整流器采用三个单相转换器和一个DC / DC转换器

    公开(公告)号:US5894414A

    公开(公告)日:1999-04-13

    申请号:US811444

    申请日:1997-03-03

    Applicant: Yimin Jiang

    Inventor: Yimin Jiang

    CPC classification number: H02M1/4216 H02M7/217 H02M2001/007 Y02B70/126

    Abstract: A power converter for converting three phase input power to DC output power and a method of effecting such conversion. The power converter includes: (1) three single phase DC converters, each having outputs, that receive the three phase input power, (2) a DC/DC converter coupled to the outputs of the three single phase DC converters and (3) a converter selection circuit, associated with the three single phase DC converters, that selects a selected subset of the three single phase DC converters as a function of an electrical characteristic of each phase of the three phase input power to conduct a portion of the three phase input power to the DC/DC converter, the converter selection circuit permitting the power converter to operate on the three phase power with less than three DC/DC converters.

    Abstract translation: 一种用于将三相输入功率转换为直流输出功率的电力转换器以及实现这种转换的方法。 功率转换器包括:(1)具有接收三相输入功率的输出的三个单相DC转换器,(2)耦合到三个单相DC转换器的输出的DC / DC转换器,以及(3)a 与三个单相DC转换器相关联的转换器选择电路,其选择三个单相DC转换器的选定子集作为三相输入功率的每相的电特性的函数,以进行三相输入的一部分 DC / DC转换器的电源,转换器选择电路允许功率转换器在具有小于三个DC / DC转换器的三相电源上工作。

    Split-boost converter having damped EMI isolation filter and method of
operation thereof
    25.
    发明授权
    Split-boost converter having damped EMI isolation filter and method of operation thereof 失效
    具有阻尼EMI隔离滤波器的分离升压转换器及其操作方法

    公开(公告)号:US5844790A

    公开(公告)日:1998-12-01

    申请号:US906539

    申请日:1997-08-05

    CPC classification number: H02M1/44 H02M1/12 H02M3/158 H02M2001/009 Y10T307/653

    Abstract: For use in a split-boost converter having a DC input, first and second outputs, a power train interposed between the DC input and the first and second outputs, a damped electromagnetic interference (EMI) filter circuit and method of reducing the EMI. In one embodiment, the EMI filter circuit includes (1) an EMI filter interposed between the power train and the second output, the EMI filter subject to oscillation from line disturbances arriving at the DC input and (2) a conductive path, coupling a rail of the second output to the DC input, that routes at least a portion of the line disturbances from the DC input directly to the second output to damp the oscillation of the EMI filter.

    Abstract translation: 为了在具有DC输入,第一和第二输出的分压升压转换器中使用介于DC输入与第一和第二输出之间的动力传动系,阻尼电磁干扰(EMI)滤波器电路和减小EMI的方法。 在一个实施例中,EMI滤波器电路包括(1)介于传动系和第二输出之间的EMI滤波器,EMI滤波器受到到达DC输入的线路干扰的振荡,以及(2)导电路径, 的第二输出到DC输入,其将至少一部分线路干扰从DC输入直接传送到第二输出以阻尼EMI滤波器的振荡。

    Three phase high power factor converter using phase selection circuit
    26.
    发明授权
    Three phase high power factor converter using phase selection circuit 失效
    三相高功率因数转换器采用相位选择电路

    公开(公告)号:US5784269A

    公开(公告)日:1998-07-21

    申请号:US804313

    申请日:1997-02-21

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

    Abstract: For use in a DC/DC converter fed by a three phase rectifier, an active circuit and method for delivering an inner phase of three phase AC input power provided to the rectifier and a power converter employing the active circuit or the method. The active circuit includes: (1) a phase selection switching circuit, coupled to the rectifier, that selects an inner phase of the three phase AC input power and (2) a switching network, coupled to the phase selection switching circuit, that controls a waveshape of at least the inner phase to the DC/DC converter thereby to reduce harmonics associated with the three phase AC input power.

    Abstract translation: 用于由三相整流器馈送的DC / DC转换器,用于传送提供给整流器的三相AC输入功率的内相的有源电路和方法以及采用有源电路或方法的功率转换器。 有源电路包括:(1)耦合到整流器的相选择切换电路,其选择三相交流输入功率的内相;以及(2)耦合到所述相选择开关电路的开关网络,其控制 至少与DC / DC转换器的内相波形,从而减少与三相AC输入功率有关的谐波。

    Soft switched three-phase boost rectifiers and voltage source inverters
    27.
    发明授权
    Soft switched three-phase boost rectifiers and voltage source inverters 失效
    软开关三相升压整流器和电压源逆变器

    公开(公告)号:US5633793A

    公开(公告)日:1997-05-27

    申请号:US376365

    申请日:1995-01-23

    Abstract: A boost rectifier is provided with an ultra high speed diode in its direct current rail to reduce diode reverse recovery loss with or without implementing a soft switching technique. Full zero-voltage-transition (ZVT) as well as zero-current-transition (ZCT) may also be achieved by adding a simple auxiliary network across the DC rail which operates only during the short turn-on transients of the bridge switches. Similarly, a simple, inexpensive auxiliary circuit can be added to the DC rail of a conventional voltage source inverter shown to implement both ZVT and ZCT.

    Abstract translation: 升压整流器在其直流导轨中提供超高速二极管,以减少或不实施软开关技术的二极管反向恢复损耗。 完全零电压转换(ZVT)以及零电流转换(ZCT)也可以通过在仅仅在桥接开关的短接通瞬变期间工作的DC轨道上添加简单的辅助网络来实现。 类似地,可以将简单,便宜的辅助电路添加到所示的常规电压源逆变器的DC导轨上,以实现ZVT和ZCT。

    Water-Cooled Internal Combustion Engine Cylinder Head And Water-Cooled Internal Combustion Engine Equipped With Same
    29.
    发明申请

    公开(公告)号:US20150300290A1

    公开(公告)日:2015-10-22

    申请号:US14443948

    申请日:2013-11-12

    Inventor: Yaofu JIANG

    CPC classification number: F02F1/40 F02F1/24 F02F1/242 F02F1/36 F02F1/4285

    Abstract: A cylinder head is prepared by integrating an upper cylinder head part and a lower cylinder head part, which are manufactured separately, into the whole, wherein the fuel injector receiving hole, the intake valve stem receiving hole and the exhaust valve stem receiving hole are respectively prepared by integrating their upper portions which are formed together with the upper cylinder head part and their lower portions which are formed together with the lower cylinder head part respectively; the intake duct and the exhaust duct are formed in the lower cylinder head part; the cylinder head water cavity is prepared by integrating an upper water cavity portion formed together with the upper cylinder head part and a lower water cavity portion formed together with the lower cylinder head part into the whole, alternatively, the cylinder head water cavity is formed, as a whole, with the lower cylinder head part.

    Abstract translation: 通过将分别制造的上部气缸盖部分和下部气缸盖部分整体地集成在一起制备气缸盖,其中分别包括燃料喷射器接收孔,进气门杆接收孔和排气阀杆接收孔 通过将它们的上部与上部气缸盖部分和它们的下部分别形成在一起的下部气缸头部分形成在一起而形成; 进气管道和排气管道形成在下气缸盖部分中; 气缸盖水腔通过将与上气缸盖部分形成的上部水腔部分和与下部气缸盖部分一起形成的下部水腔部分整体地整合而形成气缸盖水腔, 作为一个整体,与下部气缸盖部分。

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