-
公开(公告)号：US08395346B2
公开(公告)日：2013-03-12
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： H02P3/18
CPC分类号： H02P9/00 , H02P9/006 , H02P25/22 , H02P29/0243 , H02P29/032 , H02P29/50 , H02P2101/30
摘要： A synchronous electrical machine having a plurality of phases, a detecting unit arranged to detect a fault in at least one of the phases of the synchronous electrical machine, an isolating unit arranged to isolate the at least one phase of the synchronous electrical machine with the fault, a phase shift unit 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： 一种具有多相的同步电机，检测单元，被配置为检测所述同步电机的至少一相中的故障;隔离单元，被布置成将所述同步电机的所述至少一相与故障隔离 相移单元，被配置为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其余相产生的二次谐波功率的相位角和大小， 同步电机的剩余相位的二次谐波功率矢量的向量和为零。
-
公开(公告)号：US20110080000A1
公开(公告)日：2011-04-07
申请号：US12995527
申请日：2009-05-12
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 maximise 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。
-
公开(公告)号：US07557481B2
公开(公告)日：2009-07-07
申请号：US11388989
申请日：2006-03-27
IPC分类号： H02K21/12
CPC分类号： H02K1/278
摘要： A rotor 10 for an electrical machine comprising a rotor body 12, at least one magnet 18 coupled to the rotor body 12 and a retainer 22 for retaining the at least one magnet 18 to the rotor body 12, the retainer 22 comprising at least one elongate fibre in a metal matrix.
摘要翻译： 一种用于电机的转子10，包括转子体12，耦合到转子主体12的至少一个磁体18和用于将至少一个磁体18保持在转子主体12上的保持器22，保持器22包括至少一个细长 纤维在金属基体中。
-
公开(公告)号：US07554301B2
公开(公告)日：2009-06-30
申请号：US11702105
申请日：2007-02-05
申请人： David R Trainer , John J A Cullen , John R Smith
发明人： David R Trainer , John J A Cullen , John R Smith
摘要： Generators 12a are for a distributed generation system. A control system 32a receives information about network faults 14a. In normal conditions, the control system 32a controls the field current in the field coils of the generator 12a, to maintain generator output voltage at the rated value. At the onset of fault conditions, the control system 32a changes the manner in which field current is controlled, in order to reduce the fault current put onto the network.
摘要翻译： 发电机12a用于分布式发电系统。 控制系统32a接收关于网络故障14a的信息。 在正常情况下，控制系统32a控制发电机12a的励磁线圈中的励磁电流，以将发电机输出电压维持在额定值。 在故障状态开始时，控制系统32a改变控制励磁电流的方式，以减少放在网络上的故障电流。
-
5.发明授权公开(公告)号：US06888439B2
公开(公告)日：2005-05-03
申请号：US10690598
申请日：2003-10-23
CPC分类号： H02K3/522 , H01F27/2804 , H01F41/041 , H02K3/18 , H02K3/26 , H02K3/30 , Y10T29/4902 , Y10T29/49071
摘要： An electrical conductor winding (70) comprises a plurality of laminates of electrical insulation (72). Each laminate of electrical insulation (72) has a slot (78) on one surface (76). Each laminate of electrical insulation (70) has an electrical conductor (82) arranged in the slot (78). An electrical connector (84) connects the electrical conductor (82) in one laminate of electrical insulation (78) with the electrical conductor (82) in an adjacent laminate of electrical insulation (72). The laminates of electrical insulation (72) are arranged such that the surface (74) of one laminate of electrical insulation (72) abuts and is bonded to the surface (76) of an adjacent laminate of electrical insulation (12). The laminates of electrical insulation (12) comprise a glass-ceramic material. The electrical conductor windings allow active magnetic bearings, electric motors and electric generators to be used at temperatures up to 500° C. for example in gas turbine engines.
摘要翻译： 电导体绕组（70）包括多个电绝缘层叠体（72）。 电绝缘体（72）的每个层压体在一个表面（76）上具有狭槽（78）。 电气绝缘层（70）的每个层叠体具有布置在槽（78）中的电导体（82）。 电连接器（84）将一个电绝缘层（78）中的电导体（82）与电绝缘层（72）的相邻层压体中的电导体（82）连接。 电绝缘层叠体（72）被布置成使得电绝缘层（72）的一个层压体的表面（74）邻接并结合到相邻的电绝缘层压板（12）的表面（76）上。 电绝缘层压板（12）包括玻璃陶瓷材料。 电导体绕组允许主动磁轴承，电动机和发电机在高达500℃的温度下使用，例如在燃气涡轮发动机中。
-
公开(公告)号：US06794781B2
公开(公告)日：2004-09-21
申请号：US10406504
申请日：2003-04-04
IPC分类号： H02K1600
CPC分类号： H02K7/11 , H02K7/1838 , H02K49/102 , Y02E10/725
摘要： An electrical machine comprises a combined magnetic gearbox and electrical generator. A first set of permanent magnets (30) are arranged on a rotor (16) to produce a spatially variable first magnetic field. A second set of permanent magnets (32) are arranged on a rotor (40,41,43), stationary pole pieces (36) are positioned between the first set of permanent magnets (30) and the second set of permanent magnets (32) to interfere with the first magnetic field. Rotation of the rotor (16) relative to the pole pieces (36) produces a second magnetic field which rotates the second set of permanent magnets (32). A stator (42) has windings (46) to transduce a changing second magnetic field produced by the rotation of the second set of permanent magnets (32) into an electrical voltage. The electrical machine is useful for a wind turbine generator. Alternatively the arrangement may be modified to produce an electrical motor.
摘要翻译： 电机包括组合磁齿轮箱和发电机。 第一组永磁体（30）布置在转子（16）上以产生空间上可变的第一磁场。 第二组永磁体（32）设置在转子（40,41,43）上，固定极片（36）位于第一组永磁体（30）和第二组永磁体（32）之间， 以干扰第一磁场。 转子（16）相对于极片（36）的旋转产生使第二组永磁体（32）旋转的第二磁场。 定子（42）具有用于将由第二组永磁体（32）的旋转产生的变化的第二磁场转换成电压的绕组（46）。 电机对于风力发电机是有用的。 或者，可以修改该布置以产生电动马达。
-
公开(公告)号：US09018805B2
公开(公告)日：2015-04-28
申请号：US13426073
申请日：2012-03-21
申请人： John J. A. Cullen , David S. Knott
发明人： John J. A. Cullen , David S. Knott
摘要： A machine such as a ship's engine has a superconducting component requiring cooling for its operation, and includes a cooling system. The cooling system is operable in first and second modes. In a cool-down phase the cooling system is run in the first mode providing relatively high heat transfer from the superconducting component. On attainment of a desired operating temperature the cooling system is run in the second mode, providing lower heat transfer. This enables a reduced cool-down time of the machine, while allowing economical operation in normal service. The higher level of cooling in the first mode used during the start-up procedure can involve a colder cryogen, or a greater flow of coolant. One way of achieving the latter is to circulate the coolant in normally evacuated regions during the cool-down phase, and then re-establishing the vacuum in these regions for normal service operation.
摘要翻译： 诸如船舶发动机的机器具有需要对其操作进行冷却的超导部件，并且包括冷却系统。 冷却系统可在第一和第二模式下操作。 在冷却阶段，冷却系统以第一模式运行，从超导部件提供较高的热传递。 在达到期望的工作温度时，冷却系统在第二模式下运行，提供较低的热传递。 这使得能够减少机器的冷却时间，同时允许正常服务中的经济运行。 在启动过程中使用的第一种模式下的较高冷却水平可能涉及较冷的冷冻剂或更大的冷却液流。 实现后者的一种方法是在冷却阶段期间将冷却剂循环在正常抽空的区域中，然后在这些区域中重新建立真空用于正常维护操作。
-
公开(公告)号：US08648575B2
公开(公告)日：2014-02-11
申请号：US13073344
申请日：2011-03-28
申请人： John J A Cullen , Geraint W Jewell
发明人： John J A Cullen , Geraint W Jewell
CPC分类号： H02K21/16 , H02K11/225 , H02K2213/09 , H02P29/0241 , H02P29/62 , H02P29/662
摘要： An electrical machine system including a permanent magnet assembly having a magnetic field and a plurality of conductive coils, the magnet assembly and coils arranged for relative rotation between the coils and magnetic field in the manner of an electrical generator or motor, the system further comprising a current injector electrically connected to said coils and arranged selectively to supply a current signal thereto, the current signal being asynchronous with the frequency of rotation between the permanent magnet assembly and coils so as to heat and thereby demagnetise one or more magnet within said permanent magnet assembly.
摘要翻译： 一种电机系统，包括具有磁场和多个导电线圈的永磁体组件，所述磁体组件和线圈被布置成以发电机或电动机的方式在线圈和磁场之间进行相对旋转，所述系统还包括： 电流注入器电连接到所述线圈并且选择性地布置以向其提供电流信号，所述电流信号与永磁体组件和线圈之间的旋转频率异步，以便加热并由此使所述永磁体组件中的一个或多个磁体消磁 。
-
公开(公告)号：US20120248903A1
公开(公告)日：2012-10-04
申请号：US13426073
申请日：2012-03-21
申请人： John J. A. CULLEN , David S. KNOTT
发明人： John J. A. CULLEN , David S. KNOTT
IPC分类号： H02K9/00
摘要： A machine such as a ship's engine has a superconducting component 15 requiring cooling for its operation, and includes a cooling system 40. The cooling system is operable in first and second modes. In a cool-down phase the cooling system is run in the first mode providing relatively high heat transfer from the superconducting component. On attainment of a desired operating temperature the cooling system is run in the second mode, providing lower heat transfer. This enables a reduced cool-down time of the machine, while allowing economical operation in normal service.The higher level of cooling in the first mode used during the start-up procedure can involve a colder cryogen, or a greater flow of coolant. One way of achieving the latter is to circulate the coolant in normally evacuated regions 16 during the cool-down phase, and then re-establishing the vacuum in these regions for normal service operation.
摘要翻译： 诸如船舶发动机的机器具有需要冷却其运行的超导部件15，并且包括冷却系统40.冷却系统可在第一和第二模式下操作。 在冷却阶段，冷却系统以第一模式运行，从超导部件提供较高的热传递。 在达到期望的工作温度时，冷却系统在第二模式下运行，提供较低的热传递。 这使得能够减少机器的冷却时间，同时允许正常服务中的经济运行。 在启动过程中使用的第一种模式下的较高的冷却水平可能涉及较冷的冷冻剂或较冷的冷却液流。 实现后者的一种方法是在冷却阶段期间将冷却剂循环在正常抽空区域16中，然后在这些区域中重新建立真空用于正常维护操作。
-
公开(公告)号：US07521901B2
公开(公告)日：2009-04-21
申请号：US11514949
申请日：2006-09-05
申请人： David R Trainer , John J A Cullen
发明人： David R Trainer , John J A Cullen
CPC分类号： H02P9/00 , H02P9/102 , H02P2101/30
摘要： Use of a common electrical power bus to which a number of electrical power generators and consumers are coupled is well known. Typically, a high electrical capacitance is provided across the bus in order to provide stabilisation in the switching of generators and consumer devices as well as differences in the operational performances of the electrical power generators. Particularly in aerospace applications provision of high capacity electrical capacitors creates problems. By providing a feedback control and an electrical power converter take primary electrical power from an electro-mechanical converter associated with a rotating component of a prime mover, electrical power stabilisation is achieved by applying torque changes through the electromechanical converter to the rotating component of the prime mover such that stored electrical power can then be drawn as required to accommodate transients in electrical power on the bus.
摘要翻译： 使用多个发电机和消费者耦合到的公用电力总线是众所周知的。 通常，跨总线提供高电容，以便在发电机和消费者设备的切换中提供稳定性以及发电机的操作性能的差异。 特别是在航空航天应用中提供大容量电容器产生问题。 通过提供反馈控制和电功率转换器从与原动机的旋转部件相关联的机电转换器获取主要电力，通过将机电转换器的扭矩改变应用于主动机的旋转部件来实现电功率稳定 使得存储的电力然后可以根据需要被绘制以适应总线上的电力瞬变。
-
-
-
-
-
-
-
-
-
搜索结果
19 条记录 (耗时 0.022 秒)
