公开(公告)号：US20080278270A1

公开(公告)日：2008-11-13

申请号：US11745376

申请日：2007-05-07

申请人： John R. Hull

发明人： John R. Hull

IPC分类号： H01F6/04 ,  F16C39/06 ,  H02K7/09 ,  H01F6/00

CPC分类号： F16C32/0438 ,  F16C27/00 ,  F16C37/005 ,  H01F6/00 ,  H01F7/0236 ,  H02N15/04

摘要： Methods and apparatuses for improved damping in high-temperature superconducting levitation systems are disclosed. A superconducting element (e.g., a stator) generating a magnetic field and a magnet (e.g. a rotor) supported by the magnetic field are provided such that the superconducting element is supported relative to a ground state with damped motion substantially perpendicular to the support of the magnetic field on the magnet. Applying this, a cryostat housing the superconducting bearing may be coupled to the ground state with high damping but low radial stiffness, such that its resonant frequency is less than that of the superconducting bearing. The damping of the cryostat may be substantially transferred to the levitated magnetic rotor, thus, providing damping without affecting the rotational loss, as can be derived applying coupled harmonic oscillator theory in rotor dynamics. Thus, damping can be provided to a levitated object, without substantially affecting the rotational loss.

摘要翻译： 公开了用于改善高温超导悬浮系统中的阻尼的方法和装置。 提供了产生磁场的超导元件（例如定子）和由磁场支撑的磁体（例如，转子），使得超导元件相对于基本上被支撑的基本上与基本上垂直于 磁铁上的磁场。 应用此方法，将超导轴承的低温恒温器耦合到具有高阻尼但径向刚度较低的基态，使其谐振频率小于超导轴承的谐振频率。 低温恒温器的阻尼可以基本上转移到悬浮磁转子，从而提供阻尼而不影响旋转损耗，如可以在转子动力学中应用耦合谐波振荡器理论得出的。 因此，可以对悬浮物体提供阻尼，而基本上不影响旋转损失。

公开(公告)号：US5654683A

公开(公告)日：1997-08-05

申请号：US486302

申请日：1995-06-07

申请人： John R. Hull

发明人： John R. Hull

IPC分类号： F16C39/06 ,  H02N15/04 ,  H01F1/00

CPC分类号： F16C32/0438 ,  H02N15/04

摘要： A method and apparatus for compressing magnetic flux to achieve high levitation pressures. Magnetic flux produced by a magnetic flux source travels through a gap between two high temperature superconducting material structures. The gap has a varying cross-sectional area to compress the magnetic flux, providing an increased magnetic field and correspondingly increased levitation force in the gap.

摘要翻译： 一种用于压缩磁通以实现高悬浮压力的方法和装置。 由磁通源产生的磁通量穿过两个高温超导材料结构之间的间隙。 间隙具有变化的横截面面积以压缩磁通量，提供增加的磁场和相应地增加间隙中的悬浮力。

公开(公告)号：US4741383A

公开(公告)日：1988-05-03

申请号：US29035

申请日：1987-03-23

申请人： John R. Hull ,  Robert J. Lari ,  Walter F. Praeg ,  Larry R. Turner

发明人： John R. Hull ,  Robert J. Lari ,  Walter F. Praeg ,  Larry R. Turner

IPC分类号： B22D11/01 ,  B22D27/02

CPC分类号： B22D11/015

摘要： Thin metal sheets are cast by magnetically suspending molten metal deposited within a ferromagnetic yoke and between AC conducting coils and linearly displacing the magnetically levitated liquid metal while it is being cooled to form a solid metal sheet. Magnetic flux increases as the molten metal sheet moves downward and decreases as the molten metal sheet moves upward to stabilize the sheet and maintain it in equilibrium as it is linearly displaced and solidified by cooling gases. A conducting shield is electrically coupled to the molten metal sheet by means of either metal sheet engaging rollers or brushes on the solidified metal, and by means of an electrode in the vessel containing the molten metal thereby providing a return path for the eddy currents induced in the metal sheet by the AC coil generated magnetic flux. Variation in the geometry of the conducting shield allows the magnetic flux between the metal sheet and the conducting shield to be varied and the thickness in surface quality of the metal sheet to be controlled. Side guards provide lateral containment for the molten metal sheet and stabilize and shape the magnetic field while a leader sheet having electromagnetic characteristics similar to those of the metal sheet is used to start the casting process and precedes the molten metal sheet through the magnet and forms a continuous sheet therewith. The magnet may be either U-shaped with a single racetrack coil or may be rectangular with a pair of facing bedstead coils.

摘要翻译： 薄金属片通过磁性悬浮沉积在铁磁轭内和交流导电线圈之间的熔融金属并在磁悬浮液态金属被冷却以形成固体金属片时线性移位而铸造。 当熔融金属片向下移动时，磁通量增加，随着熔融金属片向上移动以稳定片材并且随着其被冷却气体线性位移和固化而保持平衡，其降低。 导电屏蔽通过金属片接合辊或刷子在固化的金属上电耦合到熔融金属片，并且通过容纳熔融金属的容器中的电极，从而提供用于在 该金属片由交流线圈产生磁通量。 导电屏蔽的几何形状的变化允许金属片和导电屏蔽之间的磁通量变化，并且控制金属片的表面质量的厚度。 侧护板为熔融金属片提供侧向容纳物，并且使用具有与金属片类似的电磁特性的引导片来开始铸造工艺并在熔融金属片通过磁体之前形成磁场的稳定和形状，并形成 连续片。 磁体可以是具有单个跑道线圈的U形或者可以是具有一对面对的床架线圈的矩形。

公开(公告)号：US20120286523A1

公开(公告)日：2012-11-15

申请号：US13104456

申请日：2011-05-10

申请人： John R. Hull ,  John F. Gonder

发明人： John R. Hull ,  John F. Gonder

IPC分类号： H02P9/02 ,  H02K7/18 ,  H02K7/02 ,  H02K3/28

CPC分类号： H02P9/48 ,  H02K3/28 ,  H02K2213/09 ,  H02P25/18

摘要： A device includes a rotor and a stator with coils arranged to form a phase element. The phase element includes a first coil group including a first coil and a second coil and a second coil group including a third coil and a fourth coil, where the rotor is positioned between the first coil group and the second coil group. The device also includes one or more switches that enable reconfiguration of the phase element by switching an electrical configuration of the coils. In a first mode, the coils are arranged with the first coil in a first coil path and the second coil in a second coil path that is coupled in parallel with the first coil path. The coils are arranged such that a voltage generated across the first coil path is substantially equal to a voltage generated across the second coil path.

摘要翻译： 一种装置包括转子和定子，其具有布置成形成相位元件的线圈。 相位元件包括包括第一线圈和第二线圈的第一线圈组和包括第三线圈和第四线圈的第二线圈组，其中转子位于第一线圈组和第二线圈组之间。 该装置还包括一个或多个开关，其通过切换线圈的电气配置来实现相元件的重新配置。 在第一模式中，线圈与第一线圈布置在第一线圈路径中，并且第二线圈布置成与第一线圈路径并联耦合的第二线圈路径。 线圈布置成使得跨越第一线圈路径产生的电压基本上等于在第二线圈路径上产生的电压。

公开(公告)号：US07073513B2

公开(公告)日：2006-07-11

申请号：US10445681

申请日：2003-05-27

申请人： Yung Sheng Cha ,  John R. Hull ,  Thomas R. Askew

发明人： Yung Sheng Cha ,  John R. Hull ,  Thomas R. Askew

IPC分类号： A61B19/00 ,  H01H47/00

CPC分类号： A61B34/73 ,  A61B34/70 ,  A61B2034/732 ,  H02K99/20

摘要： A system and method of controlling movement of magnetic material with at least first and second high temperature superconductors at spaced locations. A plurality of solenoids are associated with the superconductors to induce a persistent currents in preselected high temperature superconductors establishing a plurality of magnetic fields in response to pulsed currents introduced to one or more of the solenoids. Control mechanism in communication with said solenoids and/or said high temperature superconductors are used to demagnetize selected ones of the high temperature superconductors to reduce the magnetic fields substantially to zero. Magnetic material is moved between magnetic fields by establishing the presence thereof and thereafter reducing magnetic fields substantially to zero and establishing magnetic fields in other superconductors arranged in a predetermined configuration.

摘要翻译： 一种控制磁性材料与至少第一和第二高温超导体在间隔位置的运动的系统和方法。 多个螺线管与超导体相关联以在预选的高温超导体中引起持续电流，以响应于引入一个或多个螺线管的脉冲电流来建立多个磁场。 与所述螺线管和/或所述高温超导体通信的控制机构用于对选定的高温超导体进行去磁以将磁场基本上减小到零。 磁性材料通过建立磁场的存在而在磁场之间移动，然后将磁场基本上减小至零，并且以预定配置布置在其它超导体中建立磁场。

公开(公告)号：US6079267A

公开(公告)日：2000-06-27

申请号：US186606

申请日：1998-11-06

申请人： John R. Hull

发明人： John R. Hull

IPC分类号： G01M1/12 ,  G05G1/00

CPC分类号： F16C32/0438

摘要： Gravitational acceleration is measured in all spatial dimensions with improved sensitivity by utilizing a high temperature superconducting (HTS) gravimeter. The HTS gravimeter is comprised of a permanent magnet suspended in a spaced relationship from a high temperature superconductor, and a cantilever having a mass at its free end is connected to the permanent magnet at its fixed end. The permanent magnet and superconductor combine to form a bearing platform with extremely low frictional losses, and the rotational displacement of the mass is measured to determine gravitational acceleration. Employing a high temperature superconductor component has the significant advantage of having an operating temperature at or below 77K, whereby cooling may be accomplished with liquid nitrogen.

摘要翻译： 重力加速度是通过利用高温超导（HTS）重力仪在所有空间尺寸上测量的，具有改进的灵敏度。 HTS重力计包括悬挂在与高温超导体间隔的关系中的永磁体，并且其自由端具有质量的悬臂在其固定端连接到永磁体。 永磁体和超导体组合形成具有极低摩擦损耗的轴承平台，并测量质量的旋转位移以确定重力加速度。 使用高温超导体部件具有使工作温度在77K以下的显着优点，由此可以用液氮进行冷却。

公开(公告)号：US5586504A

公开(公告)日：1996-12-24

申请号：US438829

申请日：1995-05-11

申请人： Jianliang He ,  Zian Wang ,  Donald M. Rote ,  Howard T. Coffey ,  John R. Hull ,  Thomas M. Mulcahy ,  Yigang Cal

发明人： Jianliang He ,  Zian Wang ,  Donald M. Rote ,  Howard T. Coffey ,  John R. Hull ,  Thomas M. Mulcahy ,  Yigang Cal

IPC分类号： B60L13/04

CPC分类号： B60L13/04 ,  B60L2200/26

摘要： A propulsion and stabilization system with a plurality of superconducting magnetic devices affixed to the dual-keels of a vehicle, where the superconducting magnetic devices produce a magnetic field when energized. The system also includes a plurality of figure-eight shaped null-flux coils affixed to opposing vertical sides of slots in a guideway. The figure-eight shaped null-flux coils are vertically oriented, laterally cross-connected in parallel, longitudinally connected in series, and continue the length of the vertical slots providing levitation and guidance force. An external power source energizes the figure-eight shaped null-flux coils to create a magnetic traveling wave that interacts with the magnetic field produced by the superconducting magnets to impart motion to the vehicle.

摘要翻译： 具有固定到车辆的双龙骨上的多个超导磁性装置的推进和稳定系统，其中超导磁性装置在通电时产生磁场。 该系统还包括固定到导轨中的槽的相对的垂直侧的多个八字形的零通量线圈。 八字形零磁通线圈是垂直取向的，横向交叉并联，纵向串联连接，并延伸垂直槽的长度，提供悬浮和引导力。 外部电源激励八角形零磁通线圈，以产生与由超导磁体产生的磁场相互作用以向车辆施加运动的磁性行波。

公开(公告)号：US5563565A

公开(公告)日：1996-10-08

申请号：US156429

申请日：1993-11-23

申请人： John R. Hull

发明人： John R. Hull

IPC分类号： F16C39/06 ,  H02N15/04 ,  H02K7/09

CPC分类号： F16C32/0438 ,  H02N15/04

摘要： A method and apparatus for compressing magnetic flux to achieve high levitation pressures. Magnetic flux produced by a magnetic flux source travels through a gap between two high temperature superconducting material structures. The gap has a varying cross-sectional area to compress the magnetic flux, providing an increased magnetic field and correspondingly increased levitation force in the gap.

摘要翻译： 一种用于压缩磁通以实现高悬浮压力的方法和装置。 由磁通源产生的磁通量穿过两个高温超导材料结构之间的间隙。 间隙具有变化的横截面面积以压缩磁通量，提供增加的磁场和相应地增加间隙中的悬浮力。

公开(公告)号：US5540116A

公开(公告)日：1996-07-30

申请号：US25950

申请日：1993-03-03

申请人： John R. Hull ,  Thomas M. Mulcahy ,  Kenneth L. Uherka

发明人： John R. Hull ,  Thomas M. Mulcahy ,  Kenneth L. Uherka

IPC分类号： F16C39/06 ,  F16F15/315 ,  G05G1/00

CPC分类号： F16F15/3156 ,  F16C32/0438 ,  F16F15/315 ,  F16C2361/55 ,  Y02E60/16 ,  Y10T74/2119

摘要： A flywheel energy storage device including an iron structure disposed for rotation adjacent a stationary superconductor material structure and a stationary permanent magnet. The stationary permanent magnet levitates the iron structure while the superconductor structure can stabilize and levitate the rotating iron structure.

摘要翻译： 一种飞轮储能装置，其特征在于，包括铁结构，所述铁结构设置成与固定超导材料结构相邻地旋转，并且固定永磁体。 固定永磁体使铁结构悬浮，同时超导体结构可以稳定和悬浮旋转铁结构。

公开(公告)号：US4429683A

公开(公告)日：1984-02-07

申请号：US426362

申请日：1982-09-29

申请人： John R. Hull

发明人： John R. Hull

IPC分类号： F24J2/04 ,  F24J3/02

CPC分类号： F24J2/0466 ,  Y02E10/44

摘要： A method and apparatus for suppressing zone boundary migration in a salt gradient solar pond includes extending perforated membranes across the pond at the boundaries, between the convective and non-convective zones, the perforations being small enough in size to prevent individual turbulence disturbances from penetrating the hole, but being large enough to allow easy molecular diffusion of salt thereby preventing the formation of convective zones in the gradient layer. The total area of the perforations is a sizable fraction of the membrane area to allow sufficient salt diffusion while preventing turbulent entrainment into the gradient zone.

摘要翻译： 用于抑制盐梯度太阳能池中的区域边界迁移的方法和装置包括在对流和非对流区之间的边界处跨越池塘延伸穿孔膜，穿孔尺寸足够小以防止单独的湍流干扰穿透 但是足够大以允许盐的容易的分子扩散，从而防止在梯度层中形成对流区。 穿孔的总面积是膜面积的相当大的一部分，以允许足够的盐扩散，同时防止湍流夹带到梯度区域中。