公开(公告)号：WO1989003936A1

公开(公告)日：1989-05-05

申请号：PCT/US1988003487

申请日：1988-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  RAAD, Bernard, A. ,  DOLAN, Clarence, F.

IPC: F02N11/00

CPC classification number: H02K21/46 ,  F02N11/04

Abstract: A starting system and method for starting a prime mover (10) connected to a generator (15) by an actuable torque link (12) utilizes a hybrid permanent magnet/induction machine (17) having a rotor (34) coupled to a rotor of the main generator and a stator (32) having windings therein. The method includes the step of applying AC power to the hybrid machine stator windings (32) so that the hybrid machine (17) initially acts as an induction motor to accelerate the hybrid machine rotor (34), following which the hybrid machine (17) acts as a synchronous motor to rotate the main generator rotor at a particular speed DC power is then applied to a main generator field winding (56) and AC power is supplied to a set of main generator armature windings (58) so that the main generator operates as a synchronous motor to develop motive power, the torque link (12) is activated once the main generator (15) is operating as a synchronous motor to bring the prime mover up to self-sustaining speed.

公开(公告)号：WO1989002996A1

公开(公告)日：1989-04-06

申请号：PCT/US1988003180

申请日：1988-09-14

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ISEMAN, Walter, J.

IPC: F16H47/04

CPC classification number: H02K21/029 ,  H02K16/00 ,  H02K21/14 ,  Y10T74/19037

Abstract: In order to effect a phase shift in a dual generator (30) having a pair of rotor-supporting shafts (16, 22), where the phase shift accommodates optimum performance characteristics in a device requiring minimal space therewithin, the phase shifting device (10) includes a first gear (12) associated with an end (14) of one rotor-supporting shaft (16) and a second gear (18) associated with an end (20) of the other rotor-supporting shaft (22). The ends (14, 20) of the rotor-supporting shafts (16, 22) are disposed in spaced adjacent relation and the first rotor-supporting shaft (16) is drivingly interconnected to the second rotor-supporting shaft (22) through the first and second gears (12, 18) which are drivingly interconnected by a planet gear (24).

公开(公告)号：WO1988010366A1

公开(公告)日：1988-12-29

申请号：PCT/US1988001192

申请日：1988-04-14

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  RAAD, Bernard, Anthony ,  BALDWIN, Jeffrey, D. ,  DOLAN, Clarence, F.

IPC: F02N11/04

CPC classification number: F02N11/04

Abstract: A starting system for starting a prime mover (10) connected to a generator (14) by a torque link (12) includes an induction motor (25) having a torque rating substantially equal to the minimum torque required to rotate the rotor (17) of the generator from rest to a particular speed within a predetermined time period while the torque link is deactuated, a source of electrical power (24), contactors (CR2) for connecting the source of electrical power to the induction motor when the torque link is deactuated to accelerate the generator rotor to the particular speed, a second set of contactors (CR1) for connecting the source of electrical power to the generator windings once the generator rotor has reached a particular speed to cause the generator to operate as a synchronous motor and a torque link actuator for actuating the torque link once the generator is operating as a synchronous motor to bring the prime mover up to starting speed. The usual large magnitude transient developed in the source of electrical power is thus broken down into three transients of lesser magnitude.

公开(公告)号：WO1988004856A1

公开(公告)日：1988-06-30

申请号：PCT/US1987003256

申请日：1987-12-07

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  NOLD, Robert, Douglas

IPC: H02K05/10

CPC classification number: H02K5/225 ,  H02K5/12

Abstract: A terminal assembly (10) for a gas-filled, oil-cooled generator (14). The generator housing (12) includes an annular opening (18) with an annular boss (20) projecting into the housing (12). Means (50) are provided for spraying coolant oil around the housing boss (20). A terminal insulator (26) is supported in the boss (20), and a conducting lead (34) extends through an opening (32) in the terminal insulator (26). O-rings (40, 42) are provided to seal the insulator (26) with both the boss (20) and the conducting lead (34). The lead (34) is resistance brazed to the end turn (56) of the generator stator.

公开(公告)号：WO1988004746A1

公开(公告)日：1988-06-30

申请号：PCT/US1987003210

申请日：1987-12-04

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SUGDEN, Kenneth, B.

IPC: F16K17/04

CPC classification number: F16K17/0473 ,  Y10T137/7737 ,  Y10T137/7832 ,  Y10T137/7841

Abstract: A multiple port relief valve which is pressure responsive to control communication between an inlet and a given outlet as a function of the prevailing fluid pressure, where the relief valve funtions such that there is no flow at certain pressures, flow to a first outlet as a result of a gradual pressure increase, and flow to a second outlet as a result of a rapid pressure increase. The relief valve (10) includes a first piston-like valve member (22) disposed in a chamber (14) for movement between a first position preventing fluid communication between a fluid inlet (16) and a first fluid outlet (18) and a second position accommodating fluid communication between the fluid inlet (16) and the first fluid outlet (18). The relief valve (10) further includes a second piston-like valve member (24) disposed in the chamber (14) for movement between a first position preventing fluid communication between the fluid inlet (16) and the second fluid outlet (20) and a second position accomodating fluid communication between the fluid inlet (16) and the second fluid outlet (20).

Abstract translation: 多端口安全阀，其响应于控制入口和给定出口之间的连通而受压力作为当前流体压力的函数，其中安全阀功能使得在某些压力下不存在流动，流入第一出口 结果是逐渐的压力增加，并且由于快速的压力增加而流向第二出口。 安全阀（10）包括设置在室（14）中的第一活塞状阀构件（22），用于在防止流体入口（16）和第一流体出口（18）之间的流体连通的第一位置和第一位置之间移动 第二位置容纳流体入口（16）和第一流体出口（18）之间的流体连通。 安全阀（10）还包括设置在腔室（14）中的第二活塞状阀构件（24），用于在防止流体入口（16）和第二流体出口（20）之间的流体连通的第一位置之间移动，以及 第二位置容纳流体入口（16）和第二流体出口（20）之间的流体连通。

公开(公告)号：WO1988004519A1

公开(公告)日：1988-06-30

申请号：PCT/US1987003247

申请日：1987-12-07

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  BAKER, Robert, C. ,  DISHNER, Bryan, W.

公开(公告)号：WO1987005753A1

公开(公告)日：1987-09-24

申请号：PCT/US1987000572

申请日：1987-03-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  VAIDYA, Jayant, Gajanan ,  SHAH, Mahesh, Jivanlal

IPC: H02K01/26

CPC classification number: H02K21/46 ,  H02K3/20

Abstract: Prior rotors for use in permanent magnet machines have resulted in an undesirably high equivalent reactance for the machine, which in turn adversely affects the transient response and voltage balance characteristics thereof. In order to overcome this problem, a rotor according to the present invention includes a magnet structure (13) having at least two magnetic poles (15a, 15b) for developing magnetic flux in flux paths which intercept windings (12) in a stator (10) of the machine, at least one electrical conductor (22) disposed in a flux path between each pole (15a, 15b) and the windings (12) and a shorting plate (28a, 28b) or other electrical conductor for electrically connecting the conductors (22) together to provide an amortisseur circuit whereby the equivalent reactance of the machine is reduced to improve the voltage balance thereof. A shorted conducting plate or coil (100, 102) may also be provided surrounding the rotor along the axial extent thereof to improve the transient response characteristics of the machine.

Abstract translation: 用于永久磁铁机器的现有转子已经导致机器的不期望的高的等效电抗，这反过来又不利地影响其瞬态响应和电压平衡特性。 为了克服这个问题，根据本发明的转子包括磁体结构（13），该磁体结构（13）具有至少两个磁极（15a，15b），用于在磁通路中显现磁通量，该磁通量拦截定子（10）中的绕组 ），设置在每个极（15a，15b）和绕组（12）之间的通量路径中的至少一个电导体（22）和短路板（28a，28b）或用于电连接导体 （22）一起提供一种减少电机的等效电抗以提高其电压平衡的减法电路。 还可以沿轴向范围围绕转子设置短路导电板或线圈（100,102），以改善机器的瞬态响应特性。

公开(公告)号：WO1987005163A1

公开(公告)日：1987-08-27

申请号：PCT/US1987000417

申请日：1987-02-24

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SHEKHAWAT, Sampat, S. ,  DHYANCHAND, P. John ,  THOLLOT, Pierre

IPC: H02H07/122

CPC classification number: H02M7/487

Abstract: Bi-directional switches for use with neutral point clamped PWM inverters have utilized clamping switches which are operated alternately with main power switches in the inverter to periodically connect an output terminal of the inverter to a neutral voltage. However, a delay period is typically interposed between turn-off of a main power switch and turn-on of the clamping switch to minimize the possibility of a potentially destructive shoot-through condition. This delay adversely affects the quality of the power developed by the inverter and leads to an undesired increase in the size of snubber circuits coupled across the power switches. In oder to overcome these problems, a bi-directional switch (50) according to the present invention includes circuitry (56, 58, D9, D10) for providing a high impedance path in series circuits including the main power switches (Q1, Q2) and the clamping switch (Q7) so that shoot-through currents are blocked even when one of the main power switches and the clamping switch are simultaneously on. The delays between turn-off of a main power switch and turn-on of the clamping switch can thereby be reduced or eliminated, thereby resulting in improved quality of the output power of the inverter and a reduction in the size of snubber circuits used therein.

公开(公告)号：WO1987003332A1

公开(公告)日：1987-06-04

申请号：PCT/US1986002491

申请日：1986-11-19

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  MARKUNAS, Albert, L. ,  COHEN, Mordehy

IPC: F01D07/02

CPC classification number: F01D7/02 ,  B64D41/007 ,  Y02T50/671

Abstract: A blade pitch control mechanism for a ram air driven turbine blade (11, 11a) mounted for rotation on a hub assembly (12) having a central axis (26). A governor control member (36), including a seat (38), is mounted on a portion of the hub assembly for reciprocation along the central axis. A first spring (42, 44) acts on a governor control member in a first axial direction. A governor slide member (48) is mounted for reciprocation along the central axis. The blade is in mating engagement (34) with the governor slide member. A second spring (54) acts between the governor slide member and the seat of the governor control member for biasing the slide member opposite the first axial direction. This causes the blade to assume a course pitch when the blade and hub assembly are in storage and to allow the blade to move to fine pitch during start-up. A flyweight (56) is mounted on the hub assembly and engages the governor control member for acting against the first spring to control blade pitch and govern turbine speed after start-up.

公开(公告)号：WO1987002642A1

公开(公告)日：1987-05-07

申请号：PCT/US1986002310

申请日：1986-10-29

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  COHEN, Mordehy

IPC: B64D41/00

CPC classification number: B64D41/007 ,  Y02T50/44

Abstract: A deployment-retraction apparatus (10) for an air turbine (12) of an aircraft movable from a stowed inoperative position within the aircraft to an extended operable position externally of and in the airstream of the aircraft, and being retractable from the extended position to the stowed position. A piston and cylinder device (30, 32) is used to extend and retract the turbine. The piston is moved to an extended position by a high force mechanical compression spring (34). The piston is moved to a retracted position by applying fluid pressure (82) in opposition to the compression spring. A mechanical latch and release mechanism (42) is operatively associated with the piston for holding the piston in retracted condition and releasing the piston upon initiation of an electrical signal (68). The fluid pressure to retract the piston is applied in response to initiating an electrical signal (78). The fluid pressure also retracts a downlock pin (72) which holds the piston in its extended position.

Abstract translation: 一种用于航空器的空中涡轮机（12）的展开收回装置（10），其可从飞机内的收起的不工作位置移动到在飞行器的空气的外部和在其中的扩展的可操作位置，并且可从伸出位置缩回到 收起位置 活塞和气缸装置（30,32）用于延伸和缩回涡轮机。 活塞通过高力机械压缩弹簧（34）移动到延伸位置。 通过施加与压缩弹簧相对的流体压力（82）将活塞移动到缩回位置。 机械闩锁和释放机构（42）可操作地与活塞相关联，用于将活塞保持在缩回状态，并且在启动电信号（68）时释放活塞。 响应于发起电信号而施加用于缩回活塞的流体压力（78）。 流体压力还缩回将活塞保持在伸出位置的下压销（72）。