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公开(公告)号：US5929612A
公开(公告)日：1999-07-27
申请号：US888347
申请日：1997-07-03
申请人： David B. Eisenhaure , James L. Kirtley, Jr. , Geoffrey B. Lansberry , Kevin J. Donegan , Gita P. Rao
发明人： David B. Eisenhaure , James L. Kirtley, Jr. , Geoffrey B. Lansberry , Kevin J. Donegan , Gita P. Rao
CPC分类号： H02P9/102
摘要： In an induction generator, an additional set of stator windings is provided, separate from and secondary to the main stator windings upon which the generator's output voltage is generated and supplied to the load. This separate stator winding is provided for the purpose of supplying the generator with the reactive electrical power it needs to maintain the rotating stator field and supplying any reactive power needed by the load. Thus, there is no need to use a capacitor assembly, for supplying the reactive power needed by the generator. Currents are injected into this separate winding in such a way that only reactive power is supplied to the generator. Specifically, a power measuring circuit measures the power in the additional set of stator windings, and a power error signal is formed by algebraically adding the outputs of the power measuring circuit. The power error signal is further processed and supplied as a timing control signal for generating the injected currents, which are maintained 90 degrees out of phase with an excitation voltage curve.
摘要翻译： 在感应发电机中，提供了一组附加的定子绕组，与主定子绕组分离并次级，在该定子绕组上产生发电机的输出电压并将其提供给负载。 这个单独的定子绕组被提供用于为发电机提供其维持旋转的定子磁场并提供负载所需的任何无功功率所需的无功电功率。 因此，不需要使用电容器组件来提供发电机所需的无功功率。 电流以这样的方式注入到该单独的绕组中，即只有无功功率被提供给发电机。 具体地，功率测量电路测量附加的定子绕组组的功率，并且通过代数地加上功率测量电路的输出来形成功率误差信号。 功率误差信号被进一步处理并提供作为用于产生与激励电压曲线保持90度异相的注入电流的定时控制信号。
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公开(公告)号：US07071581B2
公开(公告)日：2006-07-04
申请号：US10062982
申请日：2002-01-31
IPC分类号： H02J7/00
CPC分类号： H02J9/08 , Y10T307/615 , Y10T307/62 , Y10T307/625 , Y10T307/631
摘要： Several embodiments of an uninterruptible power supply (UPS) system, which system provides highly reliable output power to a load using a slip-ring induction machine and a flywheel combination, are disclosed as well as methods relating thereto. In a preferred embodiment, the UPS system comprises a back-up power source, e.g., an engine and generator, and a slip-ring, or wound-rotor, induction motor and flywheel combination, which are in parallel to a primary power source, e.g., a utility grid. During normal operation of the UPS, the primary power source supplies alternating current and voltage to the load and the UPS compensates for voltage drop across the isolating inductor. Moreover, the primary power source keeps the slip-ring induction machine and flywheel in an excited state, i.e., the rotor of the slip-ring induction machine, the shaft of which is shared by the flywheel, is excited above normal synchronous speed. When the primary power source fails, the flywheel, which is rotating at super-synchronous speed and storing kinetic energy, drives the rotor of the slip-ring induction machine and generates, i.e., induces current in the stator. Accordingly, the flywheel and slip-ring induction machine combination provides instantaneous, short term power to the load until the back-up power source has powered up and been brought on line.
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公开(公告)号：US5969446A
公开(公告)日：1999-10-19
申请号：US048704
申请日：1998-03-26
摘要： A flywheel energy storage device has a central shaft, a flywheel having a flywheel rotor supported by and mounted for rotation around said shaft, and a motor/generator having a stator and a rotor. The rotor is formed integrally with the flywheel rotor. The stator has an outer cylinder that is cooled by a liquid flowing in contact with its cylindrical surface. Preferably, the stator has (i) a cylindrical hub having an outer surface and longitudinal channels formed therein, (ii) a cylinder surrounding said cylindrical hub thereby providing passages through the channels, and (iii) end caps sealing the passages and providing a distribution channel for distributing fluid to said passages, thereby providing fluid cooling passages for said stator. A radial vibration dampener can be positioned at one or both ends of the shaft. The dampener has a plurality of spring members positioned between two cylindrical surfaces, one end of each spring member being attached to each cylindrical surface.
摘要翻译： 飞轮储能装置具有中心轴，具有飞轮转子的飞轮，所述飞轮转子由所述轴支撑并安装成围绕所述轴旋转，以及具有定子和转子的马达/发电机。 转子与飞轮转子一体形成。 定子具有由与其圆柱形表面接触流动的液体冷却的外筒。 优选地，定子具有（i）具有形成在其中的外表面和纵向通道的圆柱形毂，（ii）围绕所述圆柱形毂的圆柱体，从而提供通过通道的通道，以及（iii）端盖密封通道并提供分布 通道，用于将流体分配到所述通道，从而为所述定子提供流体冷却通道。 径向振动阻尼器可以定位在轴的一端或两端。 阻尼器具有定位在两个圆柱形表面之间的多个弹簧构件，每个弹簧构件的一端附接到每个圆柱形表面。
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公开(公告)号：US4785212A
公开(公告)日：1988-11-15
申请号：US854006
申请日：1986-04-21
申请人： James R. Downer , David B. Eisenhaure , Stephen R. O'Dea , Tim E. Bliamptis , Rhonda R. Mariano , Laura J. Larkin
发明人： James R. Downer , David B. Eisenhaure , Stephen R. O'Dea , Tim E. Bliamptis , Rhonda R. Mariano , Laura J. Larkin
IPC分类号： F16C39/06
CPC分类号： F16C32/0451
摘要： A magnetic suspension system for a rotary machine including two magnetic actuators spaced from each other. Each actuator includes a stator which has a support shell with a plurality of coil windings, and a rotor which has an inclined annular gap for rotatably receiving the shell and a device for providing a magnetic field in the gap. The system selectively excites the coils to interact with the magnetic field in each gap and produce Lorentz forces for suspending the rotor of each actuator.
摘要翻译： 一种用于旋转机器的磁悬浮系统，包括彼此间隔开的两个磁致动器。 每个致动器包括具有多个线圈绕组的支撑壳体的定子和具有用于可旋转地接收壳体的倾斜环形间隙的转子和用于在间隙中提供磁场的装置。 系统选择性地激励线圈与每个间隙中的磁场相互作用，并产生用于悬挂每个致动器的转子的洛伦兹力。
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公开(公告)号：US4392100A
公开(公告)日：1983-07-05
申请号：US174552
申请日：1980-08-01
CPC分类号： H02P23/0027 , H02P23/07 , H02P21/00
摘要： An optimum efficiency control system for a variable torque/speed rotary a.c. induction machine including means for varying the frequency and magnitude of the excitation voltage/current supplied to the machine in three optimum efficiency regions of operation, a first fixed slip frequency region, a second flux saturation region, and a third voltage saturation region; and means for commanding the means for varying in the first fixed slip frequency region of operation with an excitation frequency command signal derived from the machine rotor speed and unconstrained maximum efficiency slip frequency, and an excitation voltage/current command signal derived from the difference between the commanded torque/speed of the machine and its actual torque/speed; in the second flux saturation region of operation with an excitation frequency command signal derived from the machine rotor speed and slip frequency command signal derived from the machine rotor speed and slip frequency which is a function of the difference between the commanded torque/speed of the machine and its actual torque/speed; and an excitation voltage/current command signal derived from the difference between the saturation flux and actual flux in the machine; and in the third voltage saturation region of operation with the saturation voltage and an excitation frequency command signal derived from the machine rotor speed and slip frequency which is a function of the difference between the commanded torque/speed and actual torque/speed of the machine.
摘要翻译： 用于可变转矩/速度旋转直流的最佳效率控制系统。 感应电机包括用于在三个最佳效率操作区域中改变提供给机器的激励电压/电流的频率和幅度的装置，第一固定转差频率区域，第二磁通饱和区域和第三电压饱和区域; 以及用于根据从机器转子速度和非约束最大效率转差频率导出的激励频率指令信号来命令用于改变第一固定转差频率操作区域的装置的装置，以及从所述第一固定转差频率区域的差异导出的激励电压/电流指令信号 指令扭矩/机器速度及其实际扭矩/转速; 在具有来自机器转子速度和滑差频率指令信号的激励频率指令信号的第二磁通饱和区域中，该转子速度和转差频率指令信号是从机器转子速度和转差频率导出的，该转速是机器的指令转矩/转速之间的差值的函数 及其实际扭矩/转速; 以及从机器中的饱和磁通和实际磁通之间的差导出的激励电压/电流指令信号; 以及饱和电压的第三电压饱和区域和从机器转子速度和转差频率导出的激励频率指令信号，其是指令转矩/速度与机器的实际转矩/转速之差的函数。
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公开(公告)号：US4135361A
公开(公告)日：1979-01-23
申请号：US735748
申请日：1976-10-26
申请人： David B. Eisenhaure
发明人： David B. Eisenhaure
摘要： A closed cycle-high energy density heat generating system. In the heat generating system hydrogen peroxide is fed from a vessel at a controlled rate through a catalytic converter to produce water vapor and oxygen. A first reaction heat transfer vessel receives the water vapor and oxygen mixture from the converter and combines hydrogen provided by a second reaction heat transfer with the received oxygen in a combustion reaction which produces water and heat. The water produced by the first reaction heat transfer vessel is applied to the second reaction heat transfer vessel in which it reacts with an active metal to produce a metal hydroxide, hydrogen which is recycled to the first reaction heat transfer vessel, and further heat. The flow of gases and liquids in the system is controlled by diverse temperature and pressure sensors placed throughout the system to control heat generation and system stability. The heat generated in the first and second reaction heat transfer vessels is extracted to high or low pressure circulation systems in which it is used for direct heating or conversion to mechanical energy.
摘要翻译： 封闭循环高能量密度发热系统。 在发热系统中，过氧化氢通过催化转化器以受控的速率从容器进料，以产生水蒸气和氧气。 第一反应传热容器从转化器接收水蒸气和氧气混合物，并将由第二反应热转移提供的氢气与接收的氧气结合，产生水和热的燃烧反应。 由第一反应转移容器产生的水被施加到第二反应传热容器中，其中它与活性金属反应以产生金属氢氧化物，再循环到第一反应传热容器中的氢，并进一步加热。 系统中气体和液体的流动由放置在整个系统中的各种温度和压力传感器控制，以控制发热和系统稳定性。 在第一和第二反应传热容器中产生的热量被提取到高压或低压循环系统中，其中它用于直接加热或转化成机械能。
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公开(公告)号：US4900962A
公开(公告)日：1990-02-13
申请号：US298644
申请日：1989-01-18
申请人： Richard L. Hockney , James R. Downer , David B. Eisenhaure , Timothy J. Hawkey , Bruce G. Johnson
发明人： Richard L. Hockney , James R. Downer , David B. Eisenhaure , Timothy J. Hawkey , Bruce G. Johnson
CPC分类号： F16C29/00 , F16C32/044 , F16C32/0472
摘要： A magnetic bearing system for enabling translational motion includes a carriage and a shaft for movably supporting the carriage; a first magnetic bearing fixed to one of the carriage and shaft and slidably received in a first channel of the other of the carriage and shaft. The first channel is generally "U" shaped with two side walls and a back wall. The magnetic bearing includes a pair of spaced magnetic pole pieces, each pole piece having a pair of electromagnetic coils mounted on poles on opposite ends of the pole piece proximate the side walls, and a third electromagnetic coil mounted on a pole of the pole piece proximate the backwall; a motion sensor for sensing translational motion along two axes and rotationally about three axes of the carriage and shaft relative to each other; and a correction circuit responsive to the sensor for generating a correction signal to drive the coils to compensate for any misalignment sensed between the carriage and the shaft.
摘要翻译： 一种用于实现平移运动的磁性轴承系统包括滑架和用于可移动地支承滑架的轴; 固定到滑架和轴之一的第一磁性轴承，并可滑动地容纳在滑架和轴的另一个的第一通道中。 第一通道通常为“U”形，具有两个侧壁和后壁。 磁性轴承包括一对间隔的磁极片，每个极片具有一对电磁线圈，其安装在靠近侧壁的极片的相对端上的极上，以及安装在极片极点上的第三电磁线圈 后墙; 运动传感器，用于感测沿着两个轴的平移运动并且相对于彼此旋转地围绕托架和轴的三个轴线旋转; 以及响应于传感器的校正电路，用于产生校正信号以驱动线圈以补偿在滑架和轴之间感测到的任何未对准。
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公开(公告)号：US20230291295A1
公开(公告)日：2023-09-14
申请号：US18005688
申请日：2021-07-20
IPC分类号： H02K44/06
摘要： A magnetohydrodynamic pump for use in pumping molten salts that improves upon existing solutions is disclosed. The magnetohydrodynamic pump utilizes a linear induction motor with a cavity lined with ceramic and an interior piece forcing the molten salt to travel through an annular space where the magnetic. The magnetic field generated by the windings of the linear motor produce a wave of flux that will drive currents in the molten salt thus producing a force that will cause the fluid to pump. It is also an object of the disclosed concept to provide an improved method of operating a magnetohydrodynamic pump.
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公开(公告)号：US4961352A
公开(公告)日：1990-10-09
申请号：US159844
申请日：1988-02-24
IPC分类号： G01C19/24
CPC分类号： G01C19/24 , B64G1/286 , F16C32/0438 , F16C32/0444 , Y10T74/125 , Y10T74/1282 , Y10T74/1296
摘要： A magnetic rotor suspension system including a magnetic rotor having a spin axis, and a generally spherical housing spaced from the rotor. The system includes means attached to the housing for applying magnetic fields to the rotor to fix its lateral and axial position relative to the housing and to adjust the angular orientation of the spin axis of the rotor relative to the housing.
摘要翻译： 一种磁转子悬架系统，包括具有旋转轴的磁转子和与转子间隔开的大致球形壳体。 该系统包括附接到壳体的装置，用于向转子施加磁场以固定其相对于壳体的横向和轴向位置，并且相对于壳体调节转子的旋转轴线的角度取向。
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公开(公告)号：US4700094A
公开(公告)日：1987-10-13
申请号：US889583
申请日：1986-07-22
IPC分类号： F16C39/06
CPC分类号： F16C32/0485
摘要： A magnetic suspension system including a first control coil for establishing circumferential current flow, and second and third control coils for establishing axial current flow. A support member of magnetic material has a gap for receiving the coils and there is a magnet for producing a magnetic field in the support member through the gap in the coils for generating Lorentz forces to support the coils in the axial and two mutually perpendicular radial directions.
摘要翻译： 一种包括用于建立圆周电流的第一控制线圈和用于建立轴向电流的第二和第三控制线圈的磁悬浮系统。 磁性材料的支撑构件具有用于接收线圈的间隙，并且存在用于通过线圈中的间隙在支撑构件中产生磁场的磁体，用于产生洛伦兹力以将线圈支撑在轴向和两个相互垂直的径向方向上 。
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