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公开(公告)号：US20100117569A1
公开(公告)日：2010-05-13
申请号：US12451819
申请日：2008-06-13
申请人： David R. Trainer , John J.A. Cullen , Alan J. Mitcham , Andrew M. Cross , Andrew J. Forsyth , Ahmed A-M Abdel-Hafez
发明人： David R. Trainer , John J.A. Cullen , Alan J. Mitcham , Andrew M. Cross , Andrew J. Forsyth , Ahmed A-M Abdel-Hafez
IPC分类号： H02P27/00
CPC分类号： H02P9/00 , H02P9/006 , H02P25/22 , H02P29/0243 , H02P29/032 , H02P29/50 , H02P2101/30
摘要： A synchronous electrical machine comprising a plurality of phases, detecting means arranged to detect a fault in at least one of the phases of the synchronous electrical machine, isolating means arranged to isolate the at least one phase of the synchronous electrical machine with the fault, phase shift means arranged to produce a controlled phase shift between the voltage and the current within the remaining phases of the synchronous electrical machine to adjust the phase angle and magnitude of the second harmonic powers produced by the remaining phases of the synchronous electrical machine such that the vector sum of the second harmonic power vectors of the remaining phases of the synchronous electrical machine is zero.
摘要翻译： 一种包括多相的同步电机，被配置为检测所述同步电机的至少一相中的故障的检测装置，被配置为将所述同步电机的至少一相与故障相隔离的隔离装置 移位装置被布置成在同步电机的剩余相位内的电压和电流之间产生受控的相移，以调整由同步电机的剩余相产生的二次谐波功率的相位角和幅度，使得矢量 同步电机的其余相的二次谐波功率矢量的和为零。
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公开(公告)号：US20100045221A1
公开(公告)日：2010-02-25
申请号：US12379937
申请日：2009-03-04
申请人： David R. Trainer , Harsh Agarwal , Stephen M. Husband , Gareth E. Moore , David J. Powell , Stephen A. Long
发明人： David R. Trainer , Harsh Agarwal , Stephen M. Husband , Gareth E. Moore , David J. Powell , Stephen A. Long
CPC分类号： H02P25/08 , H02P6/14 , H02P6/15 , H02P6/28 , H02P25/089
摘要： Electrical machine arrangements have advantages with regard to providing local electrical power and starting. Embedding such electrical machine arrangements in machinery such as gas turbine engines is advantageous in removing mechanical linkages and reducing aerodynamic drag. However, the components utilised must be able to withstand harsh environmental conditions and therefore the DC link capacitor used for smoothing of voltage fluctuations are limited to relatively low capacitance densities. Low density DC link capacitors require large sizes which render electrical machines less acceptable for embedded usage. By providing offset of electrical current in inductance elements such as stator windings and stator coils of electrical machines in dead periods of the cycle a reduction in DC link capacitor requirements is achieved reducing the size, weight and complexity of installing electrical machines in gas turbine engines.
摘要翻译： 电机装置在提供局部电力和启动方面具有优势。 在诸如燃气涡轮发动机的机械中嵌入这样的电机装置有利于去除机械连杆并减小空气动力学阻力。 然而，所使用的部件必须能够承受恶劣的环境条件，因此用于平滑电压波动的DC链路电容器被限制在相对低的电容密度。 低密度直流链路电容器需要较大的尺寸，这使得电机不适合嵌入式使用。 通过在循环的死区中提供诸如电机的定子绕组和定子线圈的电感元件中的电流偏移，可以减少DC链路电容器的要求，从而降低了在燃气涡轮发动机中安装电机的尺寸，重量和复杂性。
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公开(公告)号：US20100024434A1
公开(公告)日：2010-02-04
申请号：US12379594
申请日：2009-02-25
CPC分类号： F02C7/32 , F05D2220/50 , F05D2260/40311 , Y02T50/671
摘要： A gas turbine engine arrangement (1) comprises a first gas turbine engine (10), a second gas turbine engine (70), a differential gearbox (57) and an electrical generator (112). The differential gearbox (57) has a first input drive (54), a second input drive (78) and an output drive (110). The output drive (110) of the differential gearbox (57) is arranged to drive the electrical generator (112) via an external, accessory, gearbox (56). The external, accessory, gearbox (56) drives other accessories (116, 120). The first gas turbine (10) is arranged to drive the first input drive (54) of the differential gearbox (57) and the second gas turbine engine (70) is arranged to drive the second input drive (78) of the differential gearbox (57). The electrical generator (112) and accessories (116, 120) are driven at a constant frequency speed/frequency.
摘要翻译： 燃气涡轮发动机装置（1）包括第一燃气涡轮发动机（10），第二燃气涡轮发动机（70），差速齿轮箱（57）和发电机（112）。 差速齿轮箱（57）具有第一输入驱动器（54），第二输入驱动器（78）和输出驱动器（110）。 差速齿轮箱（57）的输出驱动器（110）被布置成经由外部附件齿轮箱（56）驱动发电机（112）。 外部附件齿轮箱（56）驱动其他附件（116,120）。 第一燃气轮机（10）被布置成驱动差动齿轮箱（57）的第一输入驱动器（54），并且第二燃气涡轮发动机（70）被布置成驱动差动齿轮箱的第二输入驱动器（78）（ 57）。 发电机（112）和附件（116,120）以恒定的频率/频率被驱动。
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公开(公告)号：US20090292488A1
公开(公告)日：2009-11-26
申请号：US12309608
申请日：2007-07-24
IPC分类号： G01R19/00
CPC分类号： H02J3/14 , Y02B70/3225 , Y04S20/222
摘要： Safe operation of electrical power distribution systems necessitates consideration of the fault level in terms of the potential for electrical current flow upon an earth or other fault within the electrical power distribution system. Previously, electrical power systems have been analysed to provide theoretical fault levels values for different zones of an electrical power distribution system based upon a worse case scenario. However, existing electrical loads will in practice provide a more adaptable and higher fault level. By monitoring and identifying an I-V characteristic upon switching electrical load in practical operation an actual default level at particular nodes in a power distribution system is determinable. In such circumstances decisions with regard to the connectablilty of further electrical generators or loads at particular parts and zones of an electrical power distribution system can be quantified by reference to the actual fault level rather than the theoretical worse case scenario level and therefore avoid unnecessary upgrading of transmission equipment or denying access to the electrical power system.
摘要翻译： 配电系统的安全运行需要考虑电力分配系统中地电或其他故障时的电流流动的故障等级。 以前，已经分析了电力系统，以基于更糟糕的情况来为电力分配系统的不同区域提供理论故障水平值。 然而，现有的电气负载将在实践中提供更适应性更高的故障级别。 通过在实际操作中切换电气负载时监视和识别I-V特性，可以确定配电系统中的特定节点处的实际默认电平。 在这种情况下，关于电力分配系统的特定部分和区域上的其他发电机或负载的连接性的决定可以通过参考实际故障水平而不是理论上的较差情况情景级来量化，因此避免不必要的升级 传输设备或拒绝接入电力系统。
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公开(公告)号：US20070230076A1
公开(公告)日：2007-10-04
申请号：US11727544
申请日：2007-03-27
IPC分类号： H02H9/00
摘要： An alternating current system 10 has a primary circuit 11 which forms a primary winding 18 on a core 16. A secondary winding 24 is connected with a current source 26 or, alternatively, with an impedance 60. The core 16 is threaded by a superconducting coil 20 having a current source 22. In normal use, current in the coil 20 provides a DC bias level of flux in the core 16, and the source 26 is varied to maintain substantially constant flux, thereby minimising losses in the primary circuit 11. In fault conditions, current in the coil 20 is reduced or removed to increase voltage losses across the coil 18, thereby limiting fault current. The impedance 60 can also be switched into circuit, creating further current limiting by virtue of the transformer effect of the windings 18, 24.
摘要翻译： 交流系统10具有在电路芯16上形成初级绕组18的初级电路11.次级绕组24与电流源26或者与阻抗60连接。磁芯16由超导线圈 具有电流源22.在正常使用中，线圈20中的电流在芯16中提供通量的DC偏置电平，并且改变源26以维持基本恒定的通量，从而最小化初级电路11中的损耗。 故障条件下，线圈20中的电流被减小或去除，以增加线圈18上的电压损耗，从而限制故障电流。 阻抗60也可以切换到电路中，由绕组18,24的变压器效应产生进一步的电流限制。
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6.发明授权Apparatus and method for controlling DC power to primary and secondary load utilizing capacitor 有权用于利用电容器控制一次和二次负载的直流电力的装置和方法公开(公告)号：US06477068B2
公开(公告)日：2002-11-05
申请号：US09759772
申请日：2001-01-12
IPC分类号： H02M324
CPC分类号： H02J7/0063 , H02J7/345 , Y10T307/724
摘要： An apparatus for supplying and controlling electrical power having a power source for supplying electrical power to a primary load and a secondary load, a capacitor connected to an input to the secondary load and control means operable to cause an operating condition of the apparatus to temporarily change from, a operating condition in which power from the power source is supplied to the primary and secondary loads to an alternative operating condition in which power from the power source is supplied to the primary load but is supplied to the secondary load thereby increasing the minimum voltage the capacitor can maintain at the input to the secondary load.
摘要翻译： 一种用于提供和控制电力的装置，具有用于向初级负载和次级负载提供电力的电源，连接到二次负载的输入的电容器和可操作以使装置的运行状态暂时改变的控制装置 从将来自电源的电力供应到初级和次级负载的操作条件到另一操作状态，其中将来自电源的电力供应到初级负载，但被提供给次级负载，从而增加最小电压 电容器可以保持在二次负载的输入端。
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公开(公告)号：US08698444B2
公开(公告)日：2014-04-15
申请号：US12731642
申请日：2010-03-25
申请人： Peter Malkin , David R Trainer
发明人： Peter Malkin , David R Trainer
摘要： An aircraft electrical actuator arrangement includes a plurality of actuators and a master power converter to convert power from the electrical power distribution network for supply to each actuator. The actuators include an environmental control system actuator, an aileron actuator, a flap actuator, a slat actuator, a landing gear actuator, a thrust reverser actuator, a brake actuator and a taxiing actuator. A controller is coupled to the master power converter and is arranged to allow the supply of power from the master power converter to the environmental control system actuator during a first mode of operation of the aircraft. The controller is arranged to allow the supply of electrical power from the master power converter to at least one of the aileron, the flap, the slat, the landing gear, the thrust reverser, the brake actuator or the taxiing actuator during a second mode of operation of the aircraft.
摘要翻译： 飞行器电动执行器装置包括多个致动器和主功率转换器，用于将来自配电网络的功率转换成每个致动器。 执行器包括环境控制系统致动器，副翼致动器，翼片致动器，板条致动器，起落架致动器，推力反向器致动器，制动致动器和滑行致动器。 控制器耦合到主功率转换器，并且被布置成允许在飞行器的第一操作模式期间从主功率转换器向环境控制系统致动器供电。 控制器被布置成允许在第二模式期间将来自主功率转换器的电力供应到副翼，翼片，板条，起落架，推力反向器，制动致动器或滑行致动器中的至少一个 飞机的运行。
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公开(公告)号：US08653797B2
公开(公告)日：2014-02-18
申请号：US12995527
申请日：2009-05-12
IPC分类号： H02P3/18
CPC分类号： H02P25/22 , H02K3/28 , H02K11/048 , H02K21/16 , H02K29/03 , H02P9/105 , H02P9/30 , H02P2101/30
摘要： A synchronous electrical machine comprises a plurality of phases and detecting means arranged to detect an open-circuit fault in at least one of the phases of the synchronous electrical machine. Isolating means is arranged to isolate the at least one phase of the synchronous electrical machine with the fault. Phase shift means are arranged to produce a controlled phase shift between the voltage and the current within the remaining phases of the synchronous electrical machine so as to adjust the phase angle of the second harmonic powers produced by the remaining phases of the synchronous electrical machine such that the vector sum of the second harmonic power vectors of the remaining phases of the synchronous electrical machine is zero to eliminate torque ripple. The phase shift means is arranged to adjust the phase angle of all the remaining phases by the same predetermined angle to maximize the torque ripple-free power output of the synchronous electrical machine.
摘要翻译： 同步电机包括多个相位和检测装置，其布置成检测同步电机的至少一个相位中的开路故障。 隔离装置被布置成与故障隔离同步电机的至少一个相。 相移装置被布置成在同步电机的剩余相中的电压和电流之间产生受控的相移，以便调整由同步电机的剩余相产生的二次谐波功率的相位角，使得 同步电机的剩余相位的二次谐波功率矢量的向量和为零，以消除转矩脉动。 相移装置被布置成将所有剩余相的相位角调整相同的预定角度，以最大化同步电机的无转矩脉动功率输出。
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公开(公告)号：US08427117B2
公开(公告)日：2013-04-23
申请号：US12458733
申请日：2009-07-21
CPC分类号： H02P9/102 , H02P9/105 , H02P9/48 , H02P2101/30
摘要： Electromechanical arrangements are utilized widely whereby a prime mover in the form of a mechanical assembly such as a gas turbine engine is utilized to drive an electrical machine as an electrical generator. Unfortunately the loads applied to the electrical generator may vary creating oscillation across phases of the electrical generator. Such oscillations generally will be translated to the mechanical assembly in the form of torque oscillations which may cause stressing. Stressing of the mechanical assembly will reduce its life and may alter its performance as well as fuel consumption. By provision of appropriate mechanisms for balancing electrical loads across an electrical machine as well reducing the time decay period for stored charge within an electrical assembly associated with an electrical machine it is possible to reduce torque oscillations as presented to the mechanical assembly and therefore improve its operational performance.
摘要翻译： 机电结构被广泛使用，由此利用诸如燃气涡轮发动机的机械组件形式的原动机来驱动电机作为发电机。 不幸的是，施加到发电机的负载可能变化，从而在发电机的相位上产生振荡。 这种振荡通常将以转矩振荡的形式转化为机械组件，这可能引起应力。 强调机械装配将减少其寿命，并可能改变其性能以及燃料消耗。 通过提供用于平衡跨越电机的电负载平衡的适当机构，以及减少与电机相关联的电气组件内存储的电荷的时间衰减周期，可以减少呈现给机械组件的扭矩振荡，从而改善其操作 性能。
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10.发明授权Earthing arrangement for a DC electrical system and a method of operating an earthing arrangement for a DC electrical system 有权用于直流电系统的接地装置和用于DC电气系统的接地装置的操作方法公开(公告)号：US08111496B2
公开(公告)日：2012-02-07
申请号：US12379033
申请日：2009-02-11
申请人： Stephen A Long , David R Trainer , Lihua Hu , Huw L Edwards
发明人： Stephen A Long , David R Trainer , Lihua Hu , Huw L Edwards
IPC分类号： H02H3/22
摘要： An earthing arrangement for a DC electrical system (10), the electrical system (10) comprises a plurality of earthing points (24A, 24B, 24C) and each earthing point (24A, 24B, 24C) is directly and permanently connected to earth (26) by a high impedance connection (28A, 28B, 28C). Each earthing point (24A, 24B, 24C) is selectively connectable to earth (26) in electrical parallel with the high impedance connection (28A, 28B, 28C) by a solid connection (30A, 30B, 30C) and a switch (32A, 32B, 32C). In first mode of operation the switch (32A) between the earthing point (24A) and the earth (26) of only one of the plurality of earthing points (24A, 24B, 24C) is closed.
摘要翻译： 一种用于DC电气系统（10）的接地装置，电气系统（10）包括多个接地点（24A，24B，24C），并且每个接地点（24A，24B，24C）直接并永久地连接到地面 26）通过高阻抗连接（28A，28B，28C）。 每个接地点（24A，24B，24C）通过固体连接（30A，30B，30C）和开关（32A，24B，24C）可选择地连接到与高阻抗连接（28A，28B，28C）并联的接地（26） 32B，32C）。 在第一操作模式中，接地点（24A）和多个接地点（24A，24B，24C）中仅一个接地点（26）之间的开关（32A）闭合。
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