公开(公告)号：WO1994001922A1

公开(公告)日：1994-01-20

申请号：PCT/US1993006101

申请日：1993-06-28

Applicant: SUNDSTRAND CORPORATION

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

IPC: H02M05/458

CPC classification number: H02M7/49 ,  H02M5/458 ,  H02M2001/0022 ,  H02P9/48 ,  H02P2101/30

Abstract: An electrical power generation system (10) for generating a controlled AC output including a generator (14) for converting mechanical input into variable frequency AC, a rectifier (16) for rectifying the AC into DC having a variable magnitude, an inverter (24) for inverting the DC into a controlled AC output, a feedforward sensor (22a and 22b) for sensing the rate of change of the DC, a feedback AC sensor (58a, 58b and 58c) for sensing the controlled output AC, and an inverter controller (52) responsive to the rate of change of the DC and to the controlled AC output for regulating the magnitude of the controlled AC output.

Abstract translation: 一种用于产生受控AC输出的发电系统（10），包括用于将机械输入转换成可变频率AC的发电机（14），用于将AC整流为具有可变大小的DC的整流器（16），逆变器（24） 用于将DC反转成受控的AC输出，用于感测DC的变化率的前馈传感器（22a和22b），用于感测受控输出AC的反馈AC传感器（58a，58b和58c）以及逆变器控制器 （52）响应于DC的变化率和用于调节受控AC输出的幅度的受控AC输出。

公开(公告)号：WO1992020135A1

公开(公告)日：1992-11-12

申请号：PCT/US1992003378

申请日：1992-04-23

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HUSS, John, B.

IPC: H02K16/00

CPC classification number: H02K21/029 ,  H02K16/00 ,  H02K21/14

Abstract: A permanent magnet generator (10) having a plurality of permanent magnet generator units which produce a controlled output potential for driving variable electrical loads (20) by vectorially adding an output potential of the permanent magnet generator units to produce the controlled output potential in accordance with the invention which includes a plurality of permanent magnet rotors (12 and 14) mounted on a drive shaft (16) with at least one of the rotors being rotatable with respect to the drive shaft to vary an angular position of the at least one of the rotors relative to the shaft to produce a variable magnitude permanent magnetic field; at least one stator (24) magnetically coupled to the variable magnetic field for producing the controlled output potential; and a torsion spring (30), coupled to the drive shaft and to the at least one rotor, for angularly positioning the rotors relative to each other so that the permanent magnetic field coupled to the at least one stator is zero in response to a stator fault.

公开(公告)号：WO1992012501A1

公开(公告)日：1992-07-23

申请号：PCT/US1992000285

申请日：1992-01-13

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HULSING, Rand, H., II ,  LEE, Charles, K.

IPC: G06M03/00

CPC classification number: G01R23/10

Abstract: Apparatus and method for counting frequency of a signal with improved resolution. Frequency counters (10, 60, and 100) accumulated clock cycles from a reference oscillator (20) during a sample interval. In the simplest form of the frequency counter, the reference clock signal is inverted and both the noninverted and inverted clock cycles are accumulated in separate counters (40 and 44). The accumulated counts are totaled in a summing circuit (48) and divided by two to determine their average, thereby doubling the resolution of the frequency counter. A more complex embodiment of the invention corrects a raw count of cycles of an input signal (12) that are accumulated during an extended sample interval defined by successive rising edges of a sample signal (114). The fractional portion of a cycle of the input waveform that occurred prior to the beginning of the extended sample interval is added to the raw count and the fractional portion of the input waveform that occurred after the end of the extended sample interval is subtracted. These fractional portions are defined as ratios of a partial count of clock cycles to a full count of clock cycles. The partial count is the number of clock cycles occurring between a rising edge of the sample signal and the next rising edge of the input signal, while the full count is the number of clock cycles occurring between successive rising edges of the input signal. One-half clock logic circuits (126 and 136) double the resolution of the counts accumulated by a partial counter (122) and a full counter (142), thereby doubling the resolution with which the ratios of the two counts are determined.

公开(公告)号：WO1992007180A1

公开(公告)日：1992-04-30

申请号：PCT/US1991005794

申请日：1991-08-15

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  VESSA, Phillip ,  GARCIA, Jesus, Aguilar

IPC: F02G03/00

CPC classification number: F01D21/045

Abstract: In order to avoid penetration of the housing (38) of a gas turbine (10) in the event of burst failure, the gas turbine (10) includes a containment ring system (32). The gas turbine (10) is of the type which includes a rotor (12) having a turbine wheel (14) with blades (16) and a nozzle (18) outwardly of the turbine blades (16). The nozzle (18) is adapted to direct hot gases at the turbine blades (16) to cause rotation of the rotor (12). The gas turbine (10) is also of the type having an annular combustor (20) about the rotor (12) along with an outlet (22) to the nozzle (18). The annular combustor (20) is defined by spaced inner and outer walls (24 and 26) connected by a generally radially extending wall (28). With this arrangement, the gas turbine (10) utilizes a radial turbine containment ring system (32) which has a first containment ring (34) outwardly of the rotor (12) and the nozzle (18) and a second containment ring (36) at least partially about the rotor (12) outwardly of the turbine blades (16) to deflect fragments toward the first containment ring (34) while dissipating fragment energy in the event of burst failure.

Abstract translation: 为了避免在爆裂故障的情况下燃气轮机（10）的壳体（38）的穿透，燃气轮机（10）包括容纳环系统（32）。 燃气轮机（10）是包括具有叶片（16）的涡轮机叶轮（14）和涡轮机叶片（16）外侧的喷嘴（18）的转子（12）的类型。 喷嘴（18）适于引导涡轮叶片（16）处的热气体引起转子（12）的旋转。 燃气轮机（10）也具有围绕转子（12）的环形燃烧器（20）以及与喷嘴（18）的出口（22）的类型。 环形燃烧器（20）由通过大致径向延伸的壁（28）连接的间隔开的内壁和外壁（24和26）限定。 利用这种布置，燃气轮机（10）利用径向涡轮机容纳环系统（32），其具有位于转子（12）和喷嘴（18）外部的第一容纳环（34）和第二容纳环（36） 至少部分地围绕所述涡轮机叶片（16）向外的所述转子（12），以使碎片朝向所述第一容纳环（34）偏转，同时在爆裂故障的情况下消散碎片能量。

公开(公告)号：WO1991011285A1

公开(公告)日：1991-08-08

申请号：PCT/US1991000232

申请日：1991-01-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  FAWLEY, Robert, W. ,  KEETLEY, R., G. ,  TREECE, William, D.

IPC: B23K01/19

CPC classification number: B23K1/19 ,  F01D5/005 ,  Y10T29/49318

Abstract: Combustors of gas turbine engines in which components are brazed to the combustor are not easily repairable by conventional welding because the brazed joint includes a melting point depressant which may not only cause the joint to be brittle but also the melting point of the joint to be near or below the temperatures required for welding. These problems are solved by a relatively simple and inexpensive process for producing a weld repairable combustor which includes using (20) a brazing powder mix comprising a metal powder compatible with the metals of the combustor and the article to be brazed to the combustor, and suitable melting point depressant in powder form, heating (60) the brazing powder mix to a first temperature sufficient to cause the brazing powder mix to become molten, and finally heating (70) the brazing powder mix at a second temperature for a sufficient time to cause the melting point depressant to substantially diffuse away from the brazed area. The resulting combustor formed by this process can be repaired by welding (100) when cracks or other discontinuities requiring a weld repair are situated near or at the brazed joint, and this process avoids the expensive requirement of redesign of the combustor to a welded combustor configuration which would require major tooling, equipment and processing changes.

公开(公告)号：WO1991010245A1

公开(公告)日：1991-07-11

申请号：PCT/US1990006558

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, John, P.

IPC: H01F33/00

CPC classification number: H02M7/49 ,  H01F27/38 ,  H01F30/12

Abstract: A summing transformer (68) includes first and second sets of primary windings (61a-61c, 62a-62c), first and second sets of secondary windings (71a-71c, 72a-72c) inductively linked with the first and second sets of primary windings and a set of tertiary windings (81a-81c) inductively linked with one of the first and second sets of secondary windings wherein the tertiary windings are connected together and permit zero sequence currents to flow during a period of unbalanced load currents in the sets of secondary windings whereby the output voltages produced thereby are maintained in a substantially balanced condition during such period.

公开(公告)号：WO1991009460A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006560

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SUTRINA, Thomas ,  CROWE, Lawrence, E. ,  METZLER, Mark, W.

IPC: H02M07/5387

CPC classification number: H02M7/003

Abstract: Previous electronic circuit assemblies have exhibited unnecessarily high parasitic inductance. In order to overcome this problem, an apparatus in accordance with this invention is provided with a transistor (24) having power terminals, and first and second diodes (28, 29). The apparatus comprises a first bus (20a) connected to the first diode (28) and one of the power terminals, and a second bus (16a) connected to the second diode (29), the first and second buses (20a, 16a) comprising parallel plates having substantially the same configuration.

Abstract translation: 以前的电子电路组件已经表现出不必要的高寄生电感。 为了克服这个问题，根据本发明的装置设置有具有电源端子的晶体管（24）和第一和第二二极管（28,29）。 该装置包括连接到第一二极管（28）和一个电源端子的第一总线（20a）和连接到第二二极管（29）的第二总线（16a），第一和第二总线（20a，16a） 包括具有基本相同构造的平行板。

公开(公告)号：WO1991009456A1

公开(公告)日：1991-06-27

申请号：PCT/US1990006552

申请日：1990-11-08

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DHYANCHAND, John, P. ,  PATEL, Sunil ,  NG, CHAI-NAM

IPC: H02M03/335

CPC classification number: H02M7/49

Abstract: Previously, while stepped-waveform inverters approximate a sine wave to reduce the size of the filters needed at the output of such inverters, efficient and effective methods of controlling such inverters have heretofore been lacking. In order to overcome these drawbacks, an inverter (24) for use in a variable-speed, constant-frequency power conversion system (10) of the type used in an aircraft, for example, is provided with four subinverter pairs (30, 32, 34, 36), each of which generates a respective set of waveforms. The four subinverter pairs (30, 32, 34, 46) are connected to a summing transformer (31, 33, 35, 37) having eight sets pairs of primary windings (80, 92) and eight sets of secondary windings (90, 98) coupled to the primary windings (80, 92). A regulator (50, 52) is coupled to the output of the summing transformer (31, 33, 35, 37) and varies the phase angles between the waveforms generated by the four subinverter pairs (30, 32, 34, 36) based upon the voltage and current at the output of the summing transformer (31, 33, 35, 37) in order to regulate the voltage at the output of the summing transformer (31, 33, 35, 37).

Abstract translation: 以前，阶梯波形逆变器近似正弦波以减小这种逆变器的输出所需的滤波器的尺寸，但是迄今为止，已经缺乏控制这种逆变器的有效和有效的方法。 为了克服这些缺陷，例如在用于飞行器的类型的变速恒定频率功率转换系统（10）中使用的逆变器（24）设置有四个子逆变器对（30,32） ，34,36），其中每一个产生相应的一组波形。 四个次级逆变器对（30,32,34,46）连接到具有八组初级绕组（80,92）和八组次级绕组（90,98）的求和变压器（31,33,35,37） ）耦合到初级绕组（80,92）。 调节器（50,52）耦合到求和变压器（31,33,35,37）的输出，并且基于由四个副变换器对（30,32,34,36）产生的波形之间的相位角改变，基于 为了调整求和变压器（31,33,35,37）的输出端的电压，求和变压器（31,33,35,37）输出端的电压和电流。

公开(公告)号：WO1991007075A1

公开(公告)日：1991-05-16

申请号：PCT/US1990005166

申请日：1990-09-12

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  CARLSON, William, E. ,  METZLER, Mark, W.

IPC: H05K07/20

CPC classification number: H01G2/04 ,  H01G4/38 ,  H05K3/301 ,  H05K3/325

Abstract: A disassemblable capacitor mount (10) for ceramic capacitors (20A) which allows capacitors (20A) to be mechanically secured to a printed circuit board (30) and allows for good electrical contact to be made with the capacitors (20A) to handle high power. The capacitor mount comprises a pair of parallel, spaced-apart conductors (11, 13) provided with a plurality of corresponding spaced-apart lateral slots (12A, 14A) on facing planar sides (16). A plurality of compressible contractors (23A, 25A) are disposed within the slots (12A, 14A). A plurality of capacitors having opposed electrode ends (22A, 24A) are disposed (20A) between the conductors (11, 13) with the ends (22A, 24A) positioned within the slots (12A, 14A) and contacting the contactors (23A, 25A). A rigid mechanism (28, 30) removably fixes the conductors (11, 13) to a planar surface (30). The conductors (11, 13) compressingly urge against the capacitors (20A).

公开(公告)号：WO1991006748A1

公开(公告)日：1991-05-16

申请号：PCT/US1990005713

申请日：1990-10-04

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  DUSSOURD, Jules, L.

IPC: F01D01/04

CPC classification number: F04D31/00 ,  F04C19/00 ,  F04D5/002 ,  F04D23/008

Abstract: A regenerative pump (1) and method of introducing fluid in the pump wherein direct flow of fluid from inlet ports (14, 15) of the pump into side channels (10, 11) of the pump is blocked by walls (18, 19) of the pump casing (2) thereby requiring the fluid to flow into the space between the blades (4) of the impeller (3) of the pump and radially outward before entering the side channels to provide a more ordered flow at the inlet ports which takes full advantage of the centrifugal forces within the pump. The cross-sectional area of each of the side channels (10, 11) is progressively increased in the vicinity of the inlet ports (14, 15) by tapering outwardly the radially outer walls (26, 27) of the casing defining the side channels from the upstream end of the side channels for smoothly guiding fluid into the impeller in a controlled manner.

Abstract translation: 一种再生泵（1）和在泵中引入流体的方法，其中流体从泵的入口（14,15）直接流入泵的侧通道（10,11）被壁（18,19）阻挡， （2），从而要求流体进入泵的叶轮（3）的叶片（4）之间的空间并在进入侧通道之前径向向外流动，以在入口端口处提供更有序的流动 充分利用泵内的离心力。 每个侧通道（10,11）的横截面面积在入口端口（14,15）附近通过向外逐渐增大而限定外壳的径向外壁（26,27），从而限定侧通道 从侧通道的上游端，以可控的方式平稳地将流体引导到叶轮中。