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    Power flow control with rotary transformers
    1.
    发明授权
    Power flow control with rotary transformers 失效
    带旋转变压器的电力流量控制

    公开(公告)号：US5841267A

    公开(公告)日：1998-11-24

    申请号：US814374

    申请日：1997-03-11

    Applicant: Einar Vaughn Larsen

    Inventor： Einar Vaughn Larsen

    IPC: H01F38/18 ,  H02J3/06 ,  H02J3/18 ,  H02J3/34 ,  H02K47/22 ,  H02P9/48 ,  G05F5/04

    CPC classification number: H01F38/18 ,  H02J3/06 ,  H02J3/1828 ,  H02J3/34 ,  H02K47/22 ,  H02P9/48 ,  H02P2101/10 ,  Y02E40/10 ,  Y02E40/30

    Abstract: A power flow controller seeks to inject a voltage V.sub.ser on a transmission path between a first electrical area and a second electrical area, in order to cause a desired power flow into the second electrical area. The power flow controller (20) includes a series transformer (40), a regulating transformer (44), a rotary phase shifting transformer network (44), and a control system (46). The rotary phase shifting transformer network (44) includes a first rotary phase shifting transformer (102.sub.1) and a second rotary phase shifting transformer (102.sub.2). The first rotary phase shifting transformer and the second rotary phase shifting transformer have first terminals (windings of one of either rotors or stators) connected in parallel to a regulating winding 62) of the regulation transformer. Second terminals (windings of the other of rotors or stators) are connected in series with an excited winding (52) of the series transformer. The control system applies control signals to the first rotary phase shifting transformer and the second rotary phase shifting transformer to obtain desired phase angles .theta..sub.E1, .theta..sub.E2 between the rotor (110) and stator (112) of each transformer, and thereby achieve an effective phase shift .theta..sub.PFC and a voltage magnitude ratio T.sub.PFC between the first electrical area and the second electrical area.

    Abstract translation: 功率流控制器寻求将电压Vser注入在第一电区和第二电区之间的传输路径上，以便使期望的功率流进入第二电区。 功率流量控制器（20）包括串联变压器（40），调节变压器（44），旋转相移变压器网络（44）和控制系统（46）。 旋转相移变压器网络（44）包括第一旋转相移变压器（1021）和第二旋转相移变压器（1022）。 第一旋转相移变压器和第二旋转相移变压器具有与调节变压器的调节绕组62并联连接的第一端子（转子或定子中的一个的绕组）。 第二端子（另一个转子或定子的绕组）与串联变压器的励磁绕组（52）串联连接。 控制系统将控制信号施加到第一旋转相移变压器和第二旋转相移变压器，以获得每个变压器的转子（110）和定子（112）之间的期望的相位θE1，θE2，从而实现有效 相移θPFC和在第一电区和第二电区之间的电压幅度比TPFC。

    Treble frequency converter
    2.
    发明授权
    Treble frequency converter 失效
    高音变频器

    公开(公告)号：US4155114A

    公开(公告)日：1979-05-15

    申请号：US896202

    申请日：1978-04-13

    Applicant: Zenkichi Tsuchiya ,  Fujio Ishikawa

    Inventor： Zenkichi Tsuchiya ,  Fujio Ishikawa

    IPC: H02K47/00 ,  H02K47/24 ,  H02M5/32 ,  H02M5/02 ,  H02K47/22

    CPC classification number: H02K47/24

    Abstract: A treble frequency converter comprising a stator and a synchronously rotating rotor. The stator is provided with a primary winding connectable to a polyphase alternating current source and a secondary winding from which treble frequency power can be taken, the secondary winding having three times as many poles as does the primary winding. The rotor has the same number of poles as does the primary winding and the rotor poles are shaped so that the air-gap between the stator and rotor poles will serve to produce third harmonic flux waves effectively and economically.

    Abstract translation: 一种高频变频器，包括定子和同步转动的转子。 定子设置有可连接到多相交流电源的初级绕组和可以从其获取高频功率的次级绕组，次级绕组具有与初级绕组相同的三倍的极点。 转子具有与初级绕组相同数量的极数，并且转子极被成形为使得定子和转子极之间的气隙将有效地和经济地产生三次谐波通量波。

    Method and apparatus for power converters having phases spaced at desired phase angles
    5.
    发明授权
    Method and apparatus for power converters having phases spaced at desired phase angles 有权
    用于功率转换器的方法和装置，其具有以期望相位角间隔的相位

    公开(公告)号：US07701730B2

    公开(公告)日：2010-04-20

    申请号：US11708820

    申请日：2007-02-21

    Applicant: Isaac Cohen ,  Robert A. Neidorff ,  Richard L. Valley

    Inventor： Isaac Cohen ,  Robert A. Neidorff ,  Richard L. Valley

    IPC: H02K47/22

    CPC classification number: H02M1/4216 ,  H02M1/4225 ,  Y02B70/126

    Abstract: A system and method for power conversion synchronizes multiple phases at a desired phase angle difference. The power conversion involves variable frequency switching, fixed on-time and provides power factor correction. A relative measure of a phase angle difference between two phases permits each phase to be controlled to obtain the desired phase angle difference. The power conversion involves transition mode switching to help reduce switching losses. A phase angle difference detector may be provided for each phase. The various phases may have different inherent frequencies that vary with switching frequency, and are synchronized to an average frequency.

    Abstract translation: 用于功率转换的系统和方法以期望的相位角差同步多个相位。 功率转换涉及可变频率切换，固定导通时间并提供功率因数校正。 两相之间的相位差的相对测量允许控制每个相以获得期望的相位角差。 功率转换涉及转换模式切换，有助于减少开关损耗。 可以为每个相位提供相位角差检测器。 各个相可以具有随开关频率而变化的不同的固有频率，并且与平均频率同步。

    Rotating field transformer
    7.
    发明授权
    Rotating field transformer 失效
    旋转场变压器

    公开(公告)号：US5754420A

    公开(公告)日：1998-05-19

    申请号：US810518

    申请日：1997-03-03

    Applicant: John W. Luce

    Inventor： John W. Luce

    IPC: H02J3/06 ,  H02J3/34 ,  H02K47/18 ,  H02K47/22 ,  H02K47/30 ,  H02M5/36 ,  H02M1/20

    CPC classification number: H02J3/34 ,  H02J3/06 ,  H02K47/18 ,  H02M5/36 ,  H02K47/22 ,  H02K47/30

    Abstract: A rotating field transformer comprises a torque motor and a rotating electric machine having two sets of windings, each of the windings connected to a respective polyphase electric circuit. The two windings have the same number of magnetic poles and generate coincident rotating magnetic fields having the same direction of rotation. When a torque is applied (e.g., to the shaft of a rotor carrying one of the windings) in the same direction as that of the rotating magnetic fields, electric power is transferred from the rotor-connected circuit to the stator-connected circuit. The rotating field transformer can be used to control the frequency at which power is supplied to a polyphase load, or to manage instabilities in weak links between generating stations.

    Abstract translation: 旋转场变压器包括转矩电动机和具有两组绕组的旋转电机，每个绕组连接到相应的多相电路。 两个绕组具有相同数量的磁极并产生具有相同旋转方向的重合的旋转磁场。 当以与旋转磁场相同的方向施加扭矩（例如，到承载一个绕组的转子的转子）时，电力从转子连接的电路传递到定子连接的电路。 旋转场变压器可用于控制向多相负载供电的频率，或者管理发电站之间的弱联系的不稳定性。

    System and method for damping of torsional oscillations in large inertial energy storage systems
    10.
    发明授权
    System and method for damping of torsional oscillations in large inertial energy storage systems 有权

    公开(公告)号：US11038398B2

    公开(公告)日：2021-06-15

    申请号：US16019206

    申请日：2018-06-26

    Applicant: Raytheon Company

    Inventor： Stephen Kuznetsov

    IPC: H02K7/02 ,  F03G3/08 ,  F16F15/30 ,  H02K47/22

    Abstract: An energy storage system includes a power source configured to generate power. The energy storage system also includes an induction machine coupled to an inertial flywheel, the induction machine configured to receive electrical energy from the power source, store the energy in the flywheel, and deliver a first portion of the energy to a first pulsed load. The energy storage system further includes a damping network configured to receive and absorb a second portion of the energy at a controlled rate to regulate torsional oscillations in a rotary motion of the flywheel caused by load swings or pulsations of the first pulsed load.

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