-
公开(公告)号：US5233286A
公开(公告)日：1993-08-03
申请号：US737329
申请日：1991-07-29
CPC分类号： H02M3/33561 , H02J4/00 , H02P9/307 , H02P2101/30
摘要： The problem of providing isolated DC power in a 270 volt DC power system (10) has been resolved with the use of a DC--DC converter (44) for providing isolated DC power on busses (46-48) for powering pulsating loads (66), avionics DC loads (68) and AC loads (64). The use of the converter (44) further allows for reduction in size of ripple filters (92-94) and damper circuits (50-52).
摘要翻译： 在270伏直流电力系统（10）中提供隔离直流电力的问题已经通过使用DC-DC转换器（44）来解决，用于在总线（46-48）上提供用于为脉动负载（66 ），航空电子设备直流负载（68）和交流负载（64）。 转换器（44）的使用进一步允许减小纹波滤波器（92-94）和阻尼器电路（50-52）的尺寸。
-
2.发明授权Multiple output decoupled synchronous generator and electrical system employing same 失效多输出去耦同步发电机和采用其的电气系统
公开(公告)号：US5764036A
公开(公告)日：1998-06-09
申请号：US400894
申请日：1995-03-08
申请人： Jayant G. Vaidya , Madan L. Bansal , Hassan Mansir
发明人： Jayant G. Vaidya , Madan L. Bansal , Hassan Mansir
CPC分类号： H02P9/305 , H02K19/34 , H02P2101/30
摘要： A multiple output synchronous generator in accordance with the instant invention comprises a stator having a first stator winding having a number of poles p and a second stator winding having a number of poles 2*p*n where p and n are any whole numbers, the first and second stator windings being wound utilizing a 60.degree. phase belt winding configuration such that the first stator winding is magnetically decoupled from the second stator winding preventing interaction therebetween. The generator additionally comprises a rotor rotatably disposed within the stator defining an airgap therebetween. The rotor has a first field winding of a first polarity and a second field winding having a second number of windings wound thereon for generating a flux across the airgap such that the flux induces a voltage in the first and second stator windings. These first and second field windings are configured such that the flux generated in the airgap comprises a fundamental component and an even harmonic component of substantially equal magnitude. The winding configuration of the stator and rotor insure that only the fundamental flux component and odd harmonics induce a voltage in the first stator winding, and only the even harmonic component and even harmonics induce a voltage in the second stator winding. The magnetic decoupling of the first and second stator windings ensures that harmonic distortion induced in the second output by external equipment powered thereby is not reflected in the first output, thereby maintaining a "clean-bus" for use by utilization equipment sensitive to such distortion.
摘要翻译： 根据本发明的多输出同步发电机包括具有多个极数p的第一定子绕组和具有多个极数2 * p * n的第二定子绕组的定子，其中p和n是任何整数， 第一和第二定子绕组利用60°相位带绕组构造被卷绕，使得第一定子绕组与第二定子绕组磁性地分离，从而防止它们之间的相互作用。 发电机还包括可旋转地设置在定子内的转子，其间形成气隙。 转子具有第一极性的第一场绕组和缠绕在其上的第二数量的绕组的第二场绕组，用于在气隙中产生磁通，使得磁通在第一和第二定子绕组中产生电压。 这些第一和第二场绕组被配置为使得在气隙中产生的磁通包括基本分量和基本相等的均匀谐波分量。 定子和转子的绕组结构确保只有基波通量分量和奇次谐波在第一定子绕组中引起电压，并且只有偶次谐波分量和偶次谐波在第二定子绕组中引起电压。 第一定子绕组和第二定子绕组的磁解耦确保了第二输出中由其供电的外部设备引起的谐波失真不会反映在第一输出端，从而保持“清洁总线”供使用对这种失真敏感的设备使用。
-
公开(公告)号：US5587647A
公开(公告)日：1996-12-24
申请号：US497036
申请日：1995-06-30
申请人： Madan L. Bansal , Jayant G. Vaidya
发明人： Madan L. Bansal , Jayant G. Vaidya
摘要： An electric power starter generator system comprises a synchronous generator and an induction motor/generator mutually coupled to a shaft being driven to an external prime mover. The synchronous generator and the induction motor/generator are driven by the shaft at the same speed. The system includes a rectifier/inverter having ac terminals coupled to the output of the induction motor/generator, and dc terminals coupled to a dc bus. This rectifier/inverter allows bi-directional power flow to effectuate both power generation as well as electric start of the prime mover. The synchronous generator is excited by a commonly driven permanent magnet generator and a modulated exciter field control. The induction motor/generator is self-exciting through the rectifier/inverter once a voltage is established on the dc bus. The establishment of this voltage may be accomplished by a battery, or by connection of the synchronous generator's output to the input of the rectifier/inverter through a poly-phase contactor. This contactor also allows cross connection of either machine to either distribution bus if one of the machines were to fail, or if the loading on that particular bus became excessive.
摘要翻译： 电力起动发电机系统包括同步发电机和感应电动机/发电机，其相互耦合到被驱动到外部原动机的轴。 同步发电机和感应电动机/发电机以相同的速度由轴驱动。 该系统包括具有耦合到感应电动机/发电机的输出的交流端子和耦合到直流总线的直流端子的整流器/逆变器。 该整流器/逆变器允许双向电力流量实现原动机的发电和电启动。 同步发电机由通常驱动的永磁发电机和调制的励磁机励磁控制激励。 一旦在直流母线上建立电压，感应电动机/发电机通过整流器/逆变器自激励。 该电压的建立可以由电池或通过多相接触器将同步发电机的输出连接到整流器/逆变器的输入端来实现。 如果其中一台机器发生故障，或者该特定总线上的负载过大，则该接触器还允许将两台机器交叉连接到任一分配总线。
-
公开(公告)号：US4780659A
公开(公告)日：1988-10-25
申请号：US33395
申请日：1987-04-01
CPC分类号： H02K19/34 , H02J1/02 , H02K16/00 , H02K21/48 , H02P25/22 , H02P9/00 , Y10T307/707 , Y10T307/718
摘要： A high-power, high-voltage DC power supply includes a plurality of AC generators, each of which includes a rotor and one or more sets of armature windings wherein the rotors are linked together. A plurality of rectifiers are connected together in series and the armature windings are connected to the rectifiers such that each rectifier produces a fractional voltage which is combined with the fractional voltage developed by other rectifiers to develop a combined output voltage across all of the rectifiers. The armature windings are placed relative to one another such that a plurality of equally-spaced ripple peaks appear in the combined output voltage for each 360.degree. of each armature winding voltage. This in turn minimizes ripple magnitude leading to a desirable decrease in the overall power supply size and weight.
摘要翻译： 高功率，高压直流电源包括多个交流发电机，每个交流发电机包括转子和一组或多组电枢绕组，其中转子连接在一起。 多个整流器串联连接在一起，并且电枢绕组连接到整流器，使得每个整流器产生分数电压，该分数电压与由其它整流器产生的分数电压组合，以在整个整流器之间形成组合的输出电压。 电枢绕组相对于彼此放置，使得在每个电枢绕组电压的每个360°处，在组合的输出电压中出现多个等间隔的纹波峰值。 这反过来使纹波幅度最小化，导致总体电源尺寸和重量的期望降低。
-
公开(公告)号：US4751417A
公开(公告)日：1988-06-14
申请号：US106996
申请日：1987-10-05
CPC分类号： H02K1/06 , H02K1/22 , Y10T29/49012
摘要： In order to improve the efficiency of electric machines, by reducing losses caused by eddy currents induced by high frequency fluxes, the outer surface of the rotor, including the rotor pole face, has a plurality of circumferential grooves. The grooves are provided in axially spaced relation along the rotor. Preferably, the method of reducing losses includes the step of forming the grooves by laser cutting, which permits the width and spacing of the grooves to be minimized so as to maximize loss reduction by increasing resistance to eddy currents.
摘要翻译： 为了提高电机的效率，通过减少由高频通量引起的涡流引起的损耗，包括转子极面的转子的外表面具有多个周向槽。 槽沿着转子以轴向间隔的关系设置。 优选地，减少损耗的方法包括通过激光切割形成凹槽的步骤，这允许凹槽的宽度和间距最小化，以便通过增加对涡流的阻力来最大程度地减小损耗。
-
公开(公告)号：US07276871B2
公开(公告)日：2007-10-02
申请号：US11189177
申请日：2005-07-25
申请人： Evgeni Ganev , Madan L. Bansal , William H. Warr
发明人： Evgeni Ganev , Madan L. Bansal , William H. Warr
IPC分类号： H02H7/085
CPC分类号： H02P9/006
摘要： A fault protection system and method of fault protection for permanent magnet machine (PMM)-based systems that utilize machine neutral decoupling (MND) to shut down a shorted winding and/or to isolate a short-circuit fault to prevent damage to a permanent magnet machine and to any downstream components are provided. The invention may be used for high-reactance and/or high current PMM-based systems, such as are commonly found in industrial and aviation applications.
摘要翻译： 基于永磁体（PMM）的系统的故障保护系统和故障保护方法，其利用机械中性去耦（MND）来关闭短路绕组和/或隔离短路故障以防止对永磁体的损坏 机器和任何下游部件。 本发明可用于高电抗和/或高电流PMM系统，例如在工业和航空应用中通常所见。
-
公开(公告)号：US5132894A
公开(公告)日：1992-07-21
申请号：US580076
申请日：1990-09-10
摘要： The problem of filtering DC power on a DC bus (46) in an electrical power generating system (10) is resolved using an active damper circuit (44). The active damper circuit (44) comprises a capacitor (CD) and a switching circuit (70) for alternately switching the capacitor (CD) into and out of parallel relationship with the DC bus (46).
摘要翻译： 使用主动阻尼电路（44）来解决在发电系统（10）中对DC总线（46）进行直流电力过滤的问题。 主动阻尼器电路（44）包括电容器（CD）和用于将电容器（CD）交换地切换成与DC母线（46）并联的关系的开关电路（70）。
-
公开(公告)号：US4833356A
公开(公告)日：1989-05-23
申请号：US138203
申请日：1987-12-28
申请人： Madan L. Bansal , William A. Byrd
发明人： Madan L. Bansal , William A. Byrd
摘要： An improved alternating current machine having interdispersed armature windings is disclosed. The AC machine comprises an armature core having a plurality of generally longitudinal slots and a plurality of winding groups. Each of the winding groups comprises a plurality of one-turn coil windings which are series connected to electrically adjacent windings of the winding group. Each winding has two generally parallel side portions disposed in non-adjacent ones of the slots. The side portions are joined at one end by an end turn which extends axially outward from one end of the armature core and each of the side portions have an end connection extending a distance axially outward from the other end of the armature core for connecting to a respective electrically adjacent end connection of its electrically adjacent winding. The winding groups are interdispersed about the armature core such that there are a plurality of fixed distances between the electrically adjacent windings. The end connections extend outwardly from the armature core a plurality of distances, and the distance which each particular one of the end connections extends is proportional to the distance between the particular end connection and its electrically adjacent end connection to which it is series connected.
摘要翻译： 公开了一种具有分散电枢绕组的改进的交流电机。 AC电机包括具有多个大致纵向槽和多个绕组组的电枢铁芯。 每个绕组组包括多个单匝线圈绕组，其串联连接到绕组组的电相邻绕组。 每个绕组具有设置在不相邻槽中的两个大致平行的侧部。 侧部通过从电枢铁芯的一端轴向向外延伸的端部匝接合，并且每个侧部具有从电枢铁芯另一端轴向向外延伸的端部，用于连接至 其相邻的绕组的相邻的电气端连接。 绕组基于电枢铁芯分散，使得在相邻的绕组之间存在多个固定距离。 端部连接件从电枢铁心向外延伸多个距离，并且每个特定的端部连接件延伸的距离与特定端部连接件与其与其串联连接的电气相邻端部连接件之间的距离成比例。
-
公开(公告)号：US4994700A
公开(公告)日：1991-02-19
申请号：US480662
申请日：1990-02-15
申请人： Madan L. Bansal , Barry J. Parker
发明人： Madan L. Bansal , Barry J. Parker
摘要： The problem of stator cooling in a dynamoelectric machine is resolved using manufacturing spaces (32) within stator slots (20) for flow of oil coolant. In order to secure stator winding conductors (30) within the slots, a spring wedge (36) provides a biasing force for biasing the conductors against movements within the slots.
摘要翻译： 在电动机中定子冷却的问题通过用于油冷却剂流动的定子槽（20）内的制造空间（32）来解决。 为了将定子绕组导体（30）固定在槽内，弹簧楔（36）提供偏置力，用于偏压导体以抵抗槽内的运动。
-
公开(公告)号：US4874972A
公开(公告)日：1989-10-17
申请号：US139638
申请日：1987-12-30
申请人： Madan L. Bansal , William A. Byrd
发明人： Madan L. Bansal , William A. Byrd
摘要： In a dynamoelectric machine which includes a rotor and a stator, an integral magnetic isolation and cooling system. A housing is disposed about the machine, the housing being fabricated of magnetically permeable material to define a flux path therethrough. A cooling jacket is sandwiched between the housing and the stator. The cooling jacket has coolant passages therein and is fabricated of non-magnetic material to isolate the flux path between the housing and the stator.
摘要翻译： 在包括转子和定子的电动机中，集成磁隔离和冷却系统。 壳体围绕机器设置，壳体由导磁材料制成以限定通过其的通量路径。 冷却套被夹在壳体和定子之间。 冷却套在其中具有冷却剂通道，并且由非磁性材料制成以隔离壳体和定子之间的通量路径。
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.015 秒)
