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    ISOLATION TRANSFORMER AND POWER CONVERTER
    2.
    发明公开
    ISOLATION TRANSFORMER AND POWER CONVERTER 审中-公开

    公开(公告)号：US20230368970A1

    公开(公告)日：2023-11-16

    申请号：US18358339

    申请日：2023-07-25

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Peng SHUAI ,  Xiaoqing HU ,  Zhuyong HUANG

    IPC: H01F38/00 ,  H01F27/32 ,  H01F27/24 ,  H02M3/335 ,  H02M5/10 ,  H02M7/72

    CPC classification number: H01F38/00 ,  H01F27/32 ,  H01F27/24 ,  H02M3/33584 ,  H02M5/10 ,  H02M7/72

    Abstract: This application provides an isolation transformer. The isolation transformer is applicable to a power converter, the power converter further includes a first power conversion module and a second power conversion module, the isolation transformer includes a high-voltage winding, a low-voltage winding, and a solid insulation housing. The high-voltage winding has a solid insulation layer and the solid insulation housing has an opening surface, the opening surface faces the second power conversion module, the solid insulation housing covers the low-voltage winding and the high-voltage winding that has the solid insulation layer, a conducting layer or a semi-conducting layer is disposed on the solid insulation housing, and the conducting layer or the semi-conducting layer of the solid insulation housing is grounded. In this application, a volume of the isolation transformer can be reduced, power density of the power converter can be improved, and low costs and high applicability can be ensured.

    CHOKE FOR INTERLEAVED SWITCHING
    5.
    发明申请
    CHOKE FOR INTERLEAVED SWITCHING 审中-公开

    公开(公告)号：US20170229937A1

    公开(公告)日：2017-08-10

    申请号：US15510690

    申请日：2015-09-03

    Applicant: VESTAS WIND SYSTEMS A/S

    Inventor： Tune PEDERSEN

    IPC: H02K7/18 ,  H01F38/00 ,  H01F27/28 ,  H02M5/458 ,  H02M7/493

    CPC classification number: H02K7/183 ,  H01F27/28 ,  H01F38/00 ,  H02M5/458 ,  H02M7/493

    Abstract: When performing interleaved switching, a power generation system may include chokes for filtering out a high-frequency ripple. However, because the chokes are interconnected, a common mode current can flow between the different parallel converters. Instead of connecting all the outputs of a parallel converter to the same choke, the same phase of each of the parallel converters is sent to one of the chokes. For example, the first phase signals are sent to a first choke, the second phase signals are sent to a second choke, and so forth. By doing so, air gaps in the chokes can be manipulated in order to provide a different inductance for the common mode current than a grid current. For example, the air gaps may be arranged such that the inductance corresponding to the common mode current is greater than the inductance corresponding to the grid current.

    Symmetrical power converter
    6.
    发明授权
    Symmetrical power converter 有权

    公开(公告)号：US09712062B2

    公开(公告)日：2017-07-18

    申请号：US14706847

    申请日：2015-05-07

    Applicant: Edward Herbert

    Inventor： Edward Herbert

    IPC: H02M3/335 ,  H01F38/00 ,  H01F38/02

    CPC classification number: H02M3/335 ,  H01F38/00 ,  H01F2038/006 ,  H01F2038/026 ,  H02M3/33546

    Abstract: A switched-capacitor circuit has two capacitors and two MOSFETs that cross-couple the capacitors, connecting the anode of one to the cathode of the other, and vice-versa. When either MOSFET is on, the capacitors are in series; the order alternates as the MOSFETs alternate. A reversing cyclical voltage suitable as a primary drive for a transformer is generated. If the MOSFETs alternate with no dead-time, a square-wave excitation is generated. With off-time, a pwm excitation is generate. Charge is maintained on the switched-capacitors using a symmetrical common-mode inductor. A bifilar winding is center-tap as its input, and the ends of the bifilar winding are connected to the capacitors. The capacitors are effectively in parallel. Because the charging current flows and returns through each leg of the inductor equally, it cannot magnetize the inductor core or cause any flux change. Because any voltages induced in the windings are common-mode, flux change in the core does not affect the charging current. The ac voltage generated when the capacitors switch is across the full inductor. Not only does the inductance attenuate any noise, the center-tap is between equal and opposite negative and positive voltages, which cancel. There is very little noise at the input. The circuit is reciprocal, so it can be used to rectify a transformer output. Two can be used as a bi-directional transformer isolated power converter. Several modules using 1 to 1 transformers can be stacked for a power converter having a higher ratio of input to output voltage.

    Coil and solenoid valve
    8.
    发明授权
    Coil and solenoid valve 有权
    线圈和电磁阀

    公开(公告)号：US09443649B2

    公开(公告)日：2016-09-13

    申请号：US14126206

    申请日：2012-02-27

    Applicant: Jens Hoppe ,  Stefan Konias ,  Uwe Wunderlich ,  Richard Baier

    Inventor： Jens Hoppe ,  Stefan Konias ,  Uwe Wunderlich ,  Richard Baier

    IPC: H01F27/02 ,  H01F38/00 ,  F01L1/34 ,  H01F7/128 ,  H01F7/16 ,  H01F41/12 ,  F01L1/344

    CPC classification number: H01F38/00 ,  F01L1/34 ,  F01L2001/3443 ,  H01F7/128 ,  H01F7/1607 ,  H01F27/02 ,  H01F41/127 ,  Y10T29/4902

    Abstract: A coil (4) for a solenoid valve (2) in particular for actuating a camshaft adjuster, including a coil carrier (6) with an underside, a pot (8) with a base on which the underside of the coil carrier (6) is placed and with a wall which forms an intermediate space (16) with respect to the coil carrier (6), and a yoke disk (10) which is placed on the pot (8) with coil carrier (6) and which covers the intermediate space (16), wherein the intermediate space (16) is open via a flow gap (34) between the yoke disk (10) and the coil carrier (6) and/or between the yoke disk (10) and the pot (8) and is provided for receiving a filler (36). The flow gap (34) is formed for the hardening of the filler (36).

    Abstract translation: 一种用于电磁阀（2）的线圈（4），特别用于致动凸轮轴调节器，包括具有下侧的线圈架（6），具有基座（8）的线圈架（6）的下侧， 相对于线圈架（6）形成有中间空间（16）的壁，以及用盘管架（6）放置在罐（8）上的轭盘， 中间空间（16），其中所述中间空间（16）经由所述轭盘（10）和所述线圈架（6）之间的流动间隙（34）和/或所述轭盘（10）和所述锅（ 8），并且用于接纳填料（36）。 形成流动间隙（34）用于填充物（36）的硬化。

    Six-Phase Supplied Transformer Rectifier Unit
    10.
    发明申请
    Six-Phase Supplied Transformer Rectifier Unit 有权
    六相变压器整流器单元

    公开(公告)号：US20150256099A1

    公开(公告)日：2015-09-10

    申请号：US14202888

    申请日：2014-03-10

    Applicant: The Boeing Company

    Inventor： Jian Huang ,  Christopher Mark Severns ,  Alan Thomas Bernier

    IPC: H02M7/06

    CPC classification number: H02M7/06 ,  H01F30/12 ,  H01F38/00 ,  H01F2038/006 ,  H02M2001/123 ,  Y10T307/297

    Abstract: A method and apparatus for forming a direct current power supply. An apparatus comprises a transformer and a rectifier. The transformer is figured to output a plurality of phase-shifted alternating currents in response to receiving a plurality of alternating currents. The plurality of alternating currents and the plurality of phase-shifted alternating currents form a plurality of input alternating currents that are offset relative to each other by one-twelfth of a cycle in phase. The rectifier is configured to form a direct current power supply having a common mode voltage reduced to zero within selected tolerances in response to receiving the plurality of input alternating currents.

    Abstract translation: 一种用于形成直流电源的方法和装置。 一种装置包括变压器和整流器。 响应于接收多个交流电流，变压器被设计成输出多个相移的交流电流。 多个交流电流和多个相移交流电流形成多个输入交流电流，其相对于彼此相位相差十二分之一偏移。 整流器被配置为响应于接收多个输入交流电而形成在选定的公差内具有降低到零的共模电压的直流电源。

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