公开(公告)号：WO1990000829A1

公开(公告)日：1990-01-25

申请号：PCT/US1989002769

申请日：1989-06-23

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  NGUYEN, Vietson, M. ,  DHYANCHAND, John, J.

IPC: H02M05/45

CPC classification number: H02M7/068 ,  H02M1/14

Abstract: A system for converting variable frequency multiple phase current into multiple phase current of constant frequency with a neutral having a multiple phase inverter with a neutral (N) is disclosed. A first input (34) is connected to the multiple phase inverter for receiving pulses of a positive polarity. A second input (36) is connected to the multiple phase inverter for receiving pulses of a negative polarity. A variable frequency multiple phase source (12, 14 and 16) of alternating current applies current to a multiple phase transformer (80, 142 and 180). Current from the transformer is applied to a full-wave rectifier (96) which has a first group of diodes (112) which applies the positive pulses to input(34). A second group of diodes (116) applies the negative pulses to the input (36). The ripple frequency fr present on the inputs to the multiple phase inverter with neutral is twice the frequency present in the prior art which permits the capacitance of filter capacitors (74, 76) to be reduced to permit effective shunting of the undesired ripple frequency fr to the neutral which results in a weight savings and lessening of energy at the ripple frequency fr being coupled to the inverter (38).

公开(公告)号：WO1990000256A1

公开(公告)日：1990-01-11

申请号：PCT/US1989002466

申请日：1989-06-06

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DOERFLER, Ronald, W. ,  POWER, Terrill, G. ,  JONES, Stephen, R. ,  OWENS, William, R.

IPC: G01R33/032

CPC classification number: G01R15/246 ,  G01R33/0322

Abstract: A sensor (10) for sensing the magnitude of current flowing in a conductor (12) based upon the Faraday effect is disclosed. The invention utilizes a magneto-optic material having one or more layers (32) in which alignment with an optical fiber is not critical in achieving accurate current measurements. A magneto-optic material (28) in accordance with the invention includes one or more layers (32) each having a substrate having opposed surfaces coated with a material exhibiting the Faraday effect in which light from a light source is transmitted through the magneto-optic element without substantial internal reflection and is incident upon a surface area of the coating which is greater than the surface area of the beam of light.

公开(公告)号：WO1989006453A1

公开(公告)日：1989-07-13

申请号：PCT/US1988004583

申请日：1988-12-21

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  BANSAL, Madan, L. ,  BYRD, William, A.

IPC: H02K03/00

CPC classification number: H02K3/12 ,  H02K3/28

Abstract: An improved alternating current machine (10) having interdispersed armature windings is disclosed. The AC machine (10) comprises an armature core (21) having a plurality of generally longitudinal slots (22) and a plurality of winding groups (26, 28). Each of the winding groups comprises a plurality of one-turn wave windings (26a-26e, 28a-28e) which are series connected to electrically adjacent windings of the winding group. Each winding has two generally parallel side portions (34, 35) disposed in non-adjacent ones of the slots. The side portions (34, 35) are joined at one end by an end turn which extends axially outward from one end of the armature core (21) and each of the side portions (34, 35) have an end connection (38) extending a distance axially outward from the other end of the armature core (21) for connecting to a respective electrically adjacent end connection (38) of its electrically adjacent winding. The winding groups (26, 28) are interdispersed about the armature core (21) such that there are a plurality of fixed distances between the electrically adjacent windings. The end connections (38) extend outwardly from the armature core (21) a plurality of distances, and the distance which each particular one of the end connections (38) extends is proportional to the distance between the particular end connection and its electrically adjacent end connection to which it is series connected.

公开(公告)号：WO1989006308A1

公开(公告)日：1989-07-13

申请号：PCT/US1988004582

申请日：1988-12-21

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SHEKLETON, Jack, R. ,  ARCHIBALD, John, P. ,  RODGERS, Colin

IPC: F02C03/08

CPC classification number: F23R3/28 ,  F05B2220/50 ,  F05B2250/322 ,  F23R3/04

Abstract: The combustion dynamics and efficiency of a gas tubine having an annular combustor (26) provided with fuel injection nozzles (50) that inject fuel generally tangentially is improved by providing the walls (32, 34, 39) of the combustor (26) with cooling air film injectors (70, 86; 72, 88; 74, 90) at substantially equally angularly spaced locations about each such wall and which are oriented to generally tangentially inject a film-like air stream on the associated wall (32, 34, 39).

公开(公告)号：WO1989006064A1

公开(公告)日：1989-06-29

申请号：PCT/US1988004086

申请日：1988-11-16

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, John, J. ,  SHEKHAWAT, Sampat, S. ,  NGUYEN, Vietson, M.

IPC: H02M07/5387

CPC classification number: H02M7/487 ,  H02M7/4826 ,  H02M7/53875 ,  Y02B70/1441

Abstract: An inverter (16) for producing a one or three phase output with neutral (N) is disclosed. An LC resonant circuit (14) is selectively switched by the inverter (16) to produce one or three phases having a fundamental frequency equal to the frequency of each switching circuit (32, 34, 36) within the phases of the inverter. The outputs are filtered in a filter (42, 48 and 54) to remove higher harmonics to pass the filtered output to a load (26). Energy is fed back into the resonant circuit (14) by short circuiting the switching circuits via a switch (Q7) at the time that the output voltage across a switching circuit (32, 34, 36) is zero to minimize switching losses.

公开(公告)号：WO1989005935A1

公开(公告)日：1989-06-29

申请号：PCT/US1988004584

申请日：1988-12-21

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ERIKSON, Evans, W. ,  REYNOLDS, Richard, W. ,  RYAN, Daniel, M.

IPC: F16H47/04

CPC classification number: F02N11/04 ,  F16H47/04 ,  F16H2037/0866 ,  F16H2047/045 ,  Y10T74/19033

Abstract: A combined engine starting and power generating system includes an engine (110) connected to a dynamoelectric machine (142) useable as a motor or as a generator via a differential (114). The system utilizes variable and fixed displacement hydraulic units (146, 156) sized for power generating operation. An auxiliary fixed displacement hydraulic unit (162) is provided for use only during an engine starting mode.

Abstract translation: 组合的发动机起动和发电系统包括连接到可用作电动机的电动机（142）的发动机（110），或者通过差速器（114）作为发电机。 该系统采用尺寸适合发电操作的可变和固定位移液压单元（146,156）。 辅助固定位移液压单元162被设置为仅在发动机起动模式期间使用。

公开(公告)号：WO1989005903A1

公开(公告)日：1989-06-29

申请号：PCT/US1988004423

申请日：1988-12-09

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SHEKLETON, Jack, R. ,  ARCHIBALD, John, P.

IPC: F02C07/08

CPC classification number: F23R3/283

Abstract: A fuel injector (46) for a turbine engine includes an elongated, generally cylindrical metal housing (76) having a cylindrical surface (78) terminating in an end (84) having a frustoconical surface (86). A bore (88) having an axis (89) normal to the frustoconical surface (86) extends through the housing (76) to provide an air inlet (90) in the cylindrical surface (78) and a fuel and air outlet (94) in the frustoconical surface (86). The bore (88) is narrowed at the outlet to provide a construction thereat. A curved tube (96) of substantially lesser diameter than the bore (88) is located within the bore (88) to serve as a fuel injecting tube and has an open end (100) on and normal to the axis (89) and located in close adjacency to the constriction without increasing the resistance to air flow through the constriction.

公开(公告)号：WO1989005900A1

公开(公告)日：1989-06-29

申请号：PCT/US1988004447

申请日：1988-12-13

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ISEMAN, Walter, J.

IPC: F01M11/08

CPC classification number: F16N39/002 ,  Y10T137/7287 ,  Y10T137/731

Abstract: A liquid lubricant sump level management system which includes a scavenge pump circuit communicating with the lubricant sump. A centrifugal deaerator (22) is provided in the circuit. A liquid reservoir (28) is in liquid communication with deaerator. A sensor (26) is operatively associated with the deaerator for sensing the liquid level condition in the deaerator, and providing for passage of liquid from the deaerator to the reservoir in response to high liquid level condition and for passage of liquid from the reservoir to the deaerator in response to a low liquid level condition.

公开(公告)号：WO1989003610A1

公开(公告)日：1989-04-20

申请号：PCT/US1988003405

申请日：1988-10-03

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  COOK, Alex ,  SHEKHAWAT, Sampat, S.

IPC: H02M07/537

CPC classification number: H02M3/10

Abstract: Prior DC to DC converters have required both closed-loop gating circuitry to control solid state switches and large output inductors. This typically has added both to the complexity and weight of the converters. In order to overcome these problems, a DC to DC power converter (10) having first and second input terminals (12, 14) and an output terminal (16) for providing an output voltage at the output terminal (16) which is at a potential halfway between a DC potential applied by a DC power supply across the first and second input terminals (12, 14) is disclosed. The converter (10) comprises first and second switches (34, 36) connected at a switch junction (37) in series across the first and second input terminals (12, 14), first and second series-coupled diodes (38, 40) coupled at a diode junction (41) across the first and second input terminals (12, 14) in reverse-bias relationship with respect to the DC potential applied across the first and second input terminals (12, 14), a transformer (42) comprising two windings (43, 46) inductively linked and having first and second ends (45, 46) and a center-tap (48), the ends (45, 46) coupled between the switch junction (37) and the diode junction (41) and the center-tap (48) coupled to the output terminal (16) and means (56) for alternately switching the first and the second switches (34, 36) at an equal duty factor.

Abstract translation: 先前的直流到直流转换器需要闭环门控电路来控制固态开关和大输出电感器。 这通常增加了转换器的复杂性和重量。 为了克服这些问题，具有第一和第二输入端子（12,14）的DC-DC电力转换器（10）和用于在输出端子（16）处提供输出电压的输出端子（16） 公开了跨越第一和第二输入端子（12,14）由直流电源施加的直流电位之间的中间电位。 转换器（10）包括在开关结（37）处串联连接在第一和第二输入端子（12,14）上的第一和第二开关（34,36），第一和第二串联耦合二极管（38,40） 变压器（42），其以相对于跨越所述第一和第二输入端子（12,14）施加的DC电位呈反向偏置关系而耦合在所述第一和第二输入端子（12,14）的二极管结（41） 包括感应连接并具有第一和第二端（45,46）和中心抽头（48）的两个绕组（43,46），所述端部（45,46）耦合在开关结（37）和二极管结 41）和耦合到输出端子（16）的中心抽头（48）和用于以相同的占空因数交替地切换第一和第二开关（34,36）的装置（56）。

公开(公告)号：WO1988006378A1

公开(公告)日：1988-08-25

申请号：PCT/US1988000570

申请日：1988-02-18

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  COOK, Alexander ,  REYNOLDS, Richard, W.

IPC: H02P09/00

CPC classification number: H02P9/48 ,  H02P9/08 ,  H02P2101/30

Abstract: Prior power supply systems which develop constant-frequency AC power and/or DC power from variable-speed motive power require complex electrical power converters, special electromagnetic machines or bulky constant speed drives. These components may render the system unsuitable for use in some applications. In order to overcome this problem, a power supply system for developing electrical power from variable-speed motive power produced by a prime mover includes a differential speed summer (18) having a first shaft (16) coupled to the prime mover (12) and further having second and third shafts (20, 24) coupled to first and second generators (22, 26), respectively, a power conditioner (30) coupled to the second generator (26) for conditioning the power developed thereby and means (34) for regulating the conditioned power developed by the second generator (26) so that the first generator (22) develops constant-frequency AC power.

Abstract translation: 从变频动力开发恒频交流电源和/或直流电源的现有电源系统需要复杂的电力转换器，专用电磁机器或体积庞大的恒速驱动器。 这些组件可能会使系统不适合在某些应用中使用。 为了克服这个问题，用于从由原动机产生的可变速动力来开发电力的供电系统包括具有联接到原动机（12）的第一轴（16）的差速减速器（18）和 还具有分别耦合到第一和第二发电机（22,26）的第二和第三轴（20,24），耦合到第二发电机（26）的功率调节器（30），用于调节由此产生的功率和装置（34） 用于调节由第二发生器（26）产生的调节功率，使得第一发电机（22）产生恒定的交流电力。