专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5068590A Brushless generator having AC excitation in generating and starting modes 失效
标题翻译：无刷发电机在发电和起动模式下具有交流励磁
公开(公告)号：US5068590A
公开(公告)日：1991-11-26
申请号：US453576
申请日：1989-12-20
申请人： Timothy F. Glennon , Byron R. Mehl , Pierre Thollot , Alexander Krinickas
发明人： Timothy F. Glennon , Byron R. Mehl , Pierre Thollot , Alexander Krinickas
IPC分类号： F02N11/04
CPC分类号： F02N11/04
摘要： An excitation system for a brushless generator having a main generator portion including a field winding disposed on a rotor and an armature winding disposed in a stator includes an exciter portion having a set of polyphase exciter field windings disposed in the stator and an armature winding disposed on the rotor and coupled to the main generator portion field winding. A first power converter is coupled to the main generator armature winding and a second power converter is coupled to the set of polyphase exciter field windings. Contactors are operable in a starting mode of operation to couple a source of electrical power to the first and second power converters and are operable in a generating mode to disconnect the source of electrical power from the first and second power converters. A control unit controls the power converters such that the power converters provide AC power to the main generator armature winding and to the set of polyphase exciter field windings during operation of the starting mode so that the rotor is accelerated. The control unit operates the power converters in the generating mode such that the second power converter provides AC power to the set of polyphase exciter field windings and the first power converter develops constant-frequency AC power.
摘要翻译：一种用于无刷发电机的励磁系统，其具有包括设置在转子上的励磁绕组的主发电机部分和设置在定子中的电枢绕组，具有励磁机部分，其具有设置在定子中的一组多相励磁励磁绕组和设置在定子上的电枢绕组转子并连接到主发电机部分励磁绕组。第一功率转换器耦合到主发电机电枢绕组，并且第二功率转换器耦合到该组多相励磁励磁绕组。接触器可操作在启动操作模式，以将电源耦合到第一和第二功率转换器，并且可以在发电模式下操作以将电源与第一和第二功率转换器断开连接。控制单元控制功率转换器，使得功率转换器在启动模式的操作期间向主发电机电枢绕组和多相励磁励磁绕组组提供AC电力，从而加速转子。所述控制单元以所述发电模式操作所述功率转换器，使得所述第二功率转换器向所述多相励磁场励磁绕组组提供AC电力，并且所述第一功率转换器产生恒定频率AC电力。

2. 发明授权

US5003207A Stator end winding cooling arrangement for a variable speed generator 失效
标题翻译：用于变速发电机的定子端绕组冷却装置
公开(公告)号：US5003207A
公开(公告)日：1991-03-26
申请号：US428271
申请日：1989-10-26
申请人： Alexander Krinickas , David H. Hitt , Val Vaghani
发明人： Alexander Krinickas , David H. Hitt , Val Vaghani
IPC分类号： H02K9/19
CPC分类号： H02K9/19
摘要： This invention relates to a stator winding cooler for a generator having a stator, a fluid-filled rotor mounted for rotation relative thereto and a fluid supply delivering fluid to within the rotor. The stator winding cooler comprises a fluid sprayer disposed within the rotor for accepting fluid within the rotor and delivering the fluid to windings on the stator to cool the windings, the fluid sprayer having a variable orifice therein to render rates of fluid flow through the fluid sprayer insensitive to variations in rotor speed. The stator winding cooler is so designed to function in conjunction with the generator which operates at variable speed. The rate of fluid flow through the fluid sprayer is desired to be held constant to avoid over-spraying end windings at high generator speeds. In the preferred embodiment of the invention, oil, which is used as the cooling fluid, is also passed through a fixed metering orifice within the fluid sprayer which provides a maximum flow rate therethrough. The fluid sprayer is used to cool end windings on the stator of the generator, which in the preferred embodiment is a polyphase AC generator.
摘要翻译：本发明涉及一种用于发电机的定子绕组冷却器，该定子绕组冷却器具有定子，安装成相对于其旋转的流体填充转子和将流体输送到转子内部的流体供给。定子绕组冷却器包括设置在转子内的流体喷射器，用于接收转子内的流体并将流体输送到定子上的绕组以冷却绕组，流体喷射器在其中具有可变孔口以使流体流过流体喷射器对转子速度的变化不敏感。定子绕组冷却器被设计成与以可变速度运行的发电机一起工作。期望通过流体喷雾器的流体流速保持恒定，以避免在高发电机速度下过度喷射端部绕组。在本发明的优选实施例中，用作冷却流体的油也通过流体喷射器内的固定计量孔口，其提供了通过其中的最大流速。流体喷雾器用于冷却发电机定子上的端部绕组，在优选实施例中，发电机的定子是多相交流发电机。

3. 发明授权

US5746580A Electromagnetic heating devices, particularly for ram air turbines 失效
标题翻译：电磁加热装置，尤其适用于冲压式空气涡轮机
公开(公告)号：US5746580A
公开(公告)日：1998-05-05
申请号：US671865
申请日：1996-06-28
申请人： Barry John Parker , Alexander Krinickas , John Douglas Stilwell , Neil Leonard Brown
发明人： Barry John Parker , Alexander Krinickas , John Douglas Stilwell , Neil Leonard Brown
IPC分类号： F03D9/00 , F24J3/00 , F04D29/18
CPC分类号： F03D9/00 , B64D15/12 , B64D41/007 , F03D80/40 , F24J3/00 , F05B2220/31 , F05B2260/20 , Y02E10/72 , Y02T50/675
摘要： Apparatus is provided for creating heat by electromagnetic induction between relatively rotating components. In RAT applications, part of the nose cone (34) is formed from electrically conductive material (106) which is in thermally conductive relation to the nose cone exterior. A magnetic field is created by components (60) that are spaced apart from the electrically conductive material and relatively rotatable with respect to that material. The electrically conductive material intersects the magnetic field, at least in part, such that eddy currents are created in the electrically conductive material by relative rotation with respect to the magnetic field. These eddy currents create heat which is conducted to the exterior surface of the RAT nose cone. Preferably, the magnetic field is created by a pair of spaced-apart permanent magnets (60) mounted on a support plate (62) inside the RAT hub (28) and immediately behind the nose cone. The effect of the magnetic field in heating the nose cone can be increased by use of magnetically permeable material to form the support plate and/or part of the nose cone adjacent or integral with the electrically conductive material. The nose cone includes an annular lip at the outer circumferential edge thereof which permits the forces of the air stream to drive liquid from the nose cone rather than to flow down the sides thereof.
摘要翻译：提供了用于通过相对旋转部件之间的电磁感应产生热量的装置。在RAT应用中，鼻锥体（34）的一部分由导电材料（106）形成，导电材料（106）与鼻锥外部导热。由与导电材料间隔开并相对于该材料相对旋转的部件（60）产生磁场。导电材料至少部分地与磁场相交，使得通过相对于磁场的相对旋转在导电材料中产生涡流。这些涡流产生传导到RAT鼻锥外表面的热量。优选地，磁场由安装在RAT集线器（28）内部的支撑板（62）上并且紧接在鼻锥后面的一对间隔开的永磁体（60）产生。可以通过使用导磁材料形成与导电材料相邻或与导电材料成一体的支撑板和/或鼻锥的一部分来增加加热鼻锥体中的磁场的影响。鼻锥在其外圆周边缘处包括环形唇缘，其允许空气流的力从鼻锥驱动液体，而不是沿其侧面流动。

4. 发明授权

US5558495A Electromagnetic heating devices, particularly for ram air turbines 失效
标题翻译：电磁加热装置，尤其适用于冲压式空气涡轮机
公开(公告)号：US5558495A
公开(公告)日：1996-09-24
申请号：US161765
申请日：1993-12-02
申请人： Barry J. Parker , Alexander Krinickas , John D. Stilwell , Neil L. Brown
发明人： Barry J. Parker , Alexander Krinickas , John D. Stilwell , Neil L. Brown
IPC分类号： F03D9/00 , F24J3/00 , F01D5/08
CPC分类号： F24J3/00 , B64D41/007 , F03D80/40 , F03D9/00 , F05B2220/31 , F05B2260/20 , Y02E10/72 , Y02T50/675
摘要： Apparatus is provided for creating heat by electromagnetic induction between relatively rotating components. In RAT applications, part of the nose cone (34) is formed from electrically conductive material (106) which is in thermally conductive relation to the nose cone exterior. A magnetic field is created by components (60) that are spaced apart from the electrically conductive material and relatively rotatable with respect to that material. The electrically conductive material intersects the magnetic field, at least in part, such that eddy currents are created in the electrically conductive material by relative rotation with respect to the magnetic field. These eddy currents create heat which is conducted to the exterior surface of the RAT nose cone. Preferably, the magnetic field is created by a pair of spaced-apart permanent magnets (60) mounted on a support plate (62) inside the RAT hub (28) and immediately behind the nose cone. The effect of the magnetic field in heating the nose cone can be increased by use of magnetically permeable material to form the support plate and/or part of the nose cone adjacent or integral with the electrically conductive material.
摘要翻译：提供了用于通过相对旋转部件之间的电磁感应产生热量的装置。在RAT应用中，鼻锥体（34）的一部分由导电材料（106）形成，导电材料（106）与鼻锥外部导热。由与导电材料间隔开并相对于该材料相对旋转的部件（60）产生磁场。导电材料至少部分地与磁场相交，使得通过相对于磁场的相对旋转在导电材料中产生涡流。这些涡流产生传导到RAT鼻锥外表面的热量。优选地，磁场由安装在RAT集线器（28）内部的支撑板（62）上并且紧接在鼻锥后面的一对间隔开的永磁体（60）产生。可以通过使用导磁材料形成与导电材料相邻或与导电材料成一体的支撑板和/或鼻锥的一部分来增加加热鼻锥体中的磁场的影响。

5. 发明授权

US5097195A AC exciter for VSCF starter/generator 失效
标题翻译： VSCF起动器/发电机的交流励磁机
公开(公告)号：US5097195A
公开(公告)日：1992-03-17
申请号：US441566
申请日：1989-11-27
申请人： Bernard A. Raad , Barry J. Parker , Alexander Krinickas , Loren Rademacher , Alexander Cook
发明人： Bernard A. Raad , Barry J. Parker , Alexander Krinickas , Loren Rademacher , Alexander Cook
IPC分类号： F02N11/04
CPC分类号： F02N11/04
摘要： The problem of providing field power to a stationary main generator field winding (22) is addressed such that it can be used as a motor. A dynamoelectric machine (12) is operated as both a generator and a motor. An AC-AC exciter (14) is controlled by an exciter inverter (42) to operate as an exciter generator in a generate mode, and as a rotary transformer in a start mode. The exciter inverter (42) supplies low frequency power to an exciter field winding (28) in a generate mode of operation, and supplies high frequency AC power to the generator field winding (28) in the start mode of operation.
摘要翻译：向固定主发电机励磁绕组（22）提供励磁电力的问题被解决为可以用作电动机。电动机（12）作为发电机和电动机都工作。 AC励磁机（14）由励磁机逆变器（42）控制，作为发电模式的励磁机发电机运行，作为起动方式的旋转变压器。励磁机逆变器（42）在发电运行模式下向励磁励磁绕组（28）供给低频功率，在起动运转模式下，向发电机励磁绕组（28）供给高频交流电力。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式