公开(公告)号：WO1996010286A1

公开(公告)日：1996-04-04

申请号：PCT/US1994014606

申请日：1994-12-15

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HEGLUND, William, S. ,  FERREIRA, Caio, A.

IPC: H02K23/00

CPC classification number: H02P9/40 ,  H02P2101/30

Abstract: An electric power generating system comprises a switched reluctance machine (10), an inverter (18) having a dc input/output coupled to a dc bus (24), switches responsive to switching control signals for coupling each of the machine's phase windings to the dc bus (24). A controller (22) having a number of control inputs and outputs coupled to the inverter (18) monitors the current flowing in the phase windings and voltage level on the dc bus (24) and calculates a maximum and a minimum phase current control signal. The controller (22) modulates the switching control signals to regulate the phase current within a range defined by these control signals to maintain the voltage level at a desired level. Upon calculating a positive phase current control signal, the controller (22) generates switching control signals to enable switches at a fixed angle prior to alignment, and generates switching control signals to disable the switches at a fixed angle after alignment. In this way, the machine generates sufficient electric power to maintain the voltage level at the desired level. Upon calculating a negative phase current control signal, the controller (22) generates switching control signals to enable the switches at a fixed angle prior to alignment, and generates switching control signals to disable one switch at a fixed angle prior to alignment. In this way, the machine (10) dissipates sufficient electric power to maintain the voltage at the desired level.

Abstract translation: 一种发电系统包括开关磁阻电机（10），具有耦合到直流母线（24）的直流输入/输出的逆变器（18），响应于开关控制信号的开关，用于将机器的相绕组中的每一个耦合到 直流母线（24）。 具有耦合到逆变器（18）的多个控制输入和输出的控制器（22）监视在相绕组中流动的电流和直流总线（24）上的电压电平，并计算最大和最小相电流控制信号。 控制器（22）调制开关控制信号以在由这些控制信号限定的范围内调节相电流，以将电压电平维持在期望的水平。 在计算正相电流控制信号时，控制器（22）产生开关控制信号，以在对准之前以固定角度启用开关，并且产生开关控制信号以在对准之后以固定角度禁用开关。 以这种方式，机器产生足够的电力以将电压电平维持在期望的水平。 在计算负相电流控制信号时，控制器（22）产生切换控制信号，以在对准之前以固定角度使开关成为可能，并且在对准之前产生切换控制信号以使固定角度的一个开关失效。 以这种方式，机器（10）耗散足够的电力以将电压维持在期望的水平。

公开(公告)号：WO1996005647A1

公开(公告)日：1996-02-22

申请号：PCT/US1994014788

申请日：1994-12-23

Applicant: SUNDSTRAND CORPORATION

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

IPC: H02M01/12

CPC classification number: H02M7/48 ,  H02M7/53873 ,  H02M2007/4803

Abstract: A control for an inverter having a switch (Q1-Q6) which is operated in accordance with a PMW waveform having spaced rising and falling edges includes circuitry (66) which detects the magnitude (76) and polarity (78) of a DC component in the AC output power produced by the inverter and an adder (64)/substractor which adjusts at least one of a rising and falling edge of the waveform to reduce the magnitude of the DC component.

Abstract translation: 具有根据具有间隔的上升沿和下降沿的PMW波形操作的开关（Q1-Q6）的逆变器的控制包括电路（66），其检测DC分量的幅度（76）和极性（78） 由逆变器产生的AC输出功率和调整波形的上升沿和下降沿中的至少一个的加法器（64）/减法器，以减小DC分量的幅度。

公开(公告)号：WO1995024072A1

公开(公告)日：1995-09-08

申请号：PCT/US1994014783

申请日：1994-12-23

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HEGLUND, William, S. ,  JONES, Stephen, R.

IPC: H02P07/36

CPC classification number: H02P9/40

Abstract: A power/generator system controls a turbine engine (14) in a start mode, and converts mechanical energy from the turbine engine (14) to electrical energy in a generate mode. The system comprises a switched reluctance machine (10), an inverter (18) having a dc input/output coupled to the dc distribution bus (20) and coupled to each of the machines (10) phase windings, and a controller (22) to monitor rotor position (30) and generate switching control signals (26) to the inverter (18) for each of the phase windings at a fixed angle prior to alignment of the rotor pole with the associated stator pole, which couples the phase winding to the dc bus (20) and allows dc phase current to energize the winding. At a fixed angle prior to alignment the inverter (18) is controlled to decouple the phase winding from the dc bus (20) and forcing dc current to flow back through diodes to allow the switched reluctance machine to operate as a generator.

Abstract translation: 电力/发电机系统以起动方式控制涡轮发动机（14），并且将来自涡轮发动机（14）的机械能量转换成发电模式的电能。 该系统包括开关磁阻电机（10），具有耦合到直流分配总线（20）并且耦合到每个机器（10）相绕组的直流输入/输出的逆变器（18），以及控制器（22） 在将转子磁极与相关联的定子极对准之前，以固定的角度对每个相绕组产生开关控制信号（26），以产生切换控制信号（26）到逆变器（18），将相绕组耦合到 直流母线（20）并允许直流相电流使绕组通电。 在对准之前以固定的角度控制逆变器（18）以将相绕组与直流母线（20）分离，并迫使直流电流流过二极管，以允许开关磁阻电机作为发电机工作。

公开(公告)号：WO1994028317A1

公开(公告)日：1994-12-08

申请号：PCT/US1994006121

申请日：1994-06-01

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  KANDIL, Magdy, A.

IPC: F15B21/04

CPC classification number: F03C1/0684 ,  F03C1/0602 ,  F04B49/24 ,  F04B2207/01 ,  F15B21/044

Abstract: Cavitation in axial piston motors (20) caused to act as a pump by an aiding load (28), and the related difficulty of loss of hydrostatic film (52), and tipping or hammering of motor slippers (64), can be reduced by a method which includes the step of recirculating hydraulic fluid from the supply port (18) of the motor (20) to the return port (30) of the motor (20) upon the occurrence of an aiding load (28).

Abstract translation: 轴向活塞马达（20）中的气蚀通过辅助负载（28）作为泵，并且可以通过减少电动拖鞋（64）的相关的静液压薄膜（52）的损失和倾倒或锤击来减少 一种方法，其包括在出现辅助负载（28）时将液压流体从电动机（20）的供给端口（18）再循环到电动机（20）的返回端口（30）的步骤。

公开(公告)号：WO1994017306A1

公开(公告)日：1994-08-04

申请号：PCT/US1994000989

申请日：1994-01-26

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HAGSHENAS, Behzad

IPC: F04B39/06

CPC classification number: H02K9/06 ,  F04D25/082

Abstract: A motor driven fan (10) capable of operating continuously in a dead-headed mode resulting from complete blockage of airflow from an outlet of the fan is provided in a fan including a housing (12) defining both a primary passage (52) for directing a flow of air from an inlet (36) to an outlet (28) of the fan, and a secondary passage for directing a flow of air between the inlet of the fan and ambient air surrounding the housing opposite the primary passage. The secondary passage includes a motor compartment (48) having an inlet passage (90) in fluid communication with the primary passage and an outlet passage (92) in fluid communication with the ambient air surrounding the housing. Impeller means (14), mounted within the housing, providing the flow of air in the primary and the secondary passages. A motor (20), mounted within the motor compartment and operatively connected to drive the impeller means is continuously cooled by the flow of air through the secondary passage even when the flow of air through the primary passage is reduced to zero by a complete blockage of the outlet (28) of the fan.

Abstract translation: 一种电动机驱动的风扇（10），其能够以致死的模式连续运行，这是由于风扇的出口完全阻塞气流而形成的风扇，其包括壳体（12），风扇包括限定两个主要通道（52）的壳体 来自风扇的入口（36）到出口（28）的空气流，以及用于引导风扇入口与围绕壳体的与主通道相对的环境空气之间的空气流的次级通道。 次级通道包括具有与主通道流体连通的入口通道（90）的马达室（48）和与围绕壳体的环境空气流体连通的出口通道（92）。 叶轮装置（14），安装在壳体内，提供初级和次级通道中的空气流。 安装在电动机室内并且可操作地连接以驱动叶轮装置的电动机（20）通过空气流通过次级通道被连续地冷却，即使当通过主通道的空气流被减少到零时，完全阻塞 风扇的出口（28）。

公开(公告)号：WO1993022817A1

公开(公告)日：1993-11-11

申请号：PCT/US1993003928

申请日：1993-04-27

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HUSS, John, B.

IPC: H02K09/00

CPC classification number: H02K19/38 ,  H02K9/197 ,  H02K11/042

Abstract: An electrical power generating system (1) for generating alternating current includes a main generator (14) having a stator (22) and a rotor (24) and an excitor (12) having a stator (16) and a rotor (18) with the rotors being coaxial and driven by an input shaft (36); a cylindrical non-electrically conductive containment sleeve (70) mounted with the coaxial rotors so that the rotors fit within the sleeve to provide support for the rotors against centrifugal acceleration and for containing coolant liquid; and a coolant circuit (50) for cooling the windings (30) of the generator rotor and the excitor rotor windings (42) the coolant circuit including a first portion (52) for receiving a coolant input (50) through the windings of the generator rotor and a second portion (56) comes into contact with the windings of the excitor rotor with the containment sleeve preventing coolant from flowing into an air gap between both rotors and both stators.

公开(公告)号：WO1993017234A1

公开(公告)日：1993-09-02

申请号：PCT/US1993001488

申请日：1993-02-19

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  BORNEMISZA, Tibor ,  HOSANG, George

IPC: F02K03/02

CPC classification number: F16C33/38 ,  F01D25/16 ,  F02C3/05 ,  F02C7/36 ,  F02K3/06 ,  F16C2360/23 ,  Y02T50/671

Abstract: The cost and bulk of a speed reducing transmission required to provide low speed rotational power from a gas turbine engine is avoided by employing bearings (16, 18) journalling a high speed shaft (12) of the engine with a power takeoff in the form of a tubular shaft (62) having bearing receiving and retaining openings (82) to act as a bearing cage for bearing elements (64, 66) disposed between inner and outer bearing races (68, 70). Upon rotation of the high speed shaft (12), the bearing elements (64, 66) will move in an epicyclic fashion thereby driving the tubular shaft (62) at a reduced rotational rate allowing it to drive loads such as a dynamoelectric machine (90) or a ducted fan (48) at rotational speeds less than the rotational speed of the high speed shaft (12).

Abstract translation: 通过使用以发动机的高速轴（12）将发动机的高速轴（12）作为动力起飞的轴承（16,18）来避免由燃气涡轮发动机提供低速旋转动力所需的减速传动的成本和体积， 具有轴承接收和保持开口（8​​2）的管状轴（62），其用作用于设置在内部和外部轴承座（68,70）之间的轴承元件（64,66）的轴承座。 在高速轴（12）旋转时，轴承元件（64,66）将以行星方式运动，从而以降低的转动速度驱动管状轴（62），从而驱动负载如电动机（90） ）或风扇（48）的旋转速度小于高速轴（12）的转速。

公开(公告)号：WO1993016917A1

公开(公告)日：1993-09-02

申请号：PCT/US1993001489

申请日：1993-02-19

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  SEIDEL, William, E.

IPC: B64C11/28

CPC classification number: F03D7/0224 ,  B64D41/007 ,  F03D9/00 ,  F03D9/32 ,  F05B2220/31 ,  F05B2260/74 ,  F05B2260/75 ,  F05B2260/77 ,  Y02E10/723

Abstract: An undesirably long axial length of a ram air turbine may be reduced in a construction including a hub (110) mounted for rotation about a rotational axis (112), at least one turbine blade (114) rotatably mounted on the hub (110) for rotation between coarse and fine pitch positions about a blade pitch axis (116) which is different from the rotational axis (112) and a counterweight assembly (120) for each turbine blade (114) and mounted on the hub (110) for rotation between coarse and fine pitch positions about the blade pitch axis (116) in spaced relation to the rotational axis (114) and disposed when rotated about the rotational axis (112) to bias the turbine blade (114) towards its coarse pitch position. A limited lost motion connection (143, 144, 145, 146, 147, 148, 150) is located between the turbine blade (114) and the counterweight assembly (120). The main governor spring (130) biases the counterweight (120) toward a fine pitch position and a spring (142 ) acts across the lost motion connection (143, 144, 145, 146, 147, 148, 150) and biases the blade (114) toward the coarse pitch position.

公开(公告)号：WO1993014409A1

公开(公告)日：1993-07-22

申请号：PCT/US1993000484

申请日：1993-01-21

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  HULSING, Rand, H., II

IPC: G01P09/04

CPC classification number: G01C19/5719 ,  F02G1/044 ,  F02G1/0445 ,  F16L37/24 ,  G01P15/0802 ,  G01P15/097 ,  G01P15/18 ,  G01P2015/0828

Abstract: A sensor (10) is disclosed for measuring the acceleration and angular rotation rate of a moving body and is micromachined from a silicon substrate (16). First and second accelerometers (32a and b) are micromachined from the silicon substrate (16), each having a force sensing axis (38) and producing an output signal of the acceleration of the moving body along its force sensing axis (38). The first and second accelerometers (32a and b) are mounted within the substrate (16) to be moved along a vibration axis (41). The first and second accelerometers (32a and b) are vibrated or dithered to increase the Coriolis component of the output signals from the first and second accelerometers (32a and b). A sinusoidal drive signal of a predetermined frequency is applied to a conductive path (92) disposed on each of the accelerometers. A link (72) is formed within the silicon substrate (16) and connected to each of the accelerometers (32a and b), whereby motion imparted to one results in a like, but opposite motion applied to the other accelerometer (32).

Abstract translation: 公开了一种用于测量移动体的加速度和角度旋转速率并且从硅衬底（16）微加工的传感器（10）。 第一和第二加速度计（32a和b）从硅衬底（16）微加工，每个具有力感测轴（38），并且沿其力感测轴线（38）产生运动体的加速度的输出信号。 第一和第二加速度计（32a和b）安装在基板（16）内以沿着振动轴线（41）移动。 第一和第二加速度计（32a和b）被振动或抖动以增加来自第一和第二加速度计（32a和b）的输出信号的科里奥利分量。 将预定频率的正弦驱动信号施加到设置在每个加速度计上的导电路径（92）。 在硅衬底（16）内形成连接件（72）并连接到每个加速度计（32a和b），由此赋予一个运动的运动导致施加到另一个加速度计（32）的相似但相反的运动。

公开(公告)号：WO1993011600A1

公开(公告)日：1993-06-10

申请号：PCT/US1992009986

申请日：1992-11-18

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROZMAN, Gregory, I. ,  COOK, Alexander

IPC: H02M01/14

CPC classification number: H02M1/14 ,  H02M5/458

Abstract: A circuit in a power system for suppressing an AC ripple superimposed on a bus signal (70) on a bus (18a and 18b) includes a first circuit (60) for producing first and second signals (62a and 62b) having a frequency substantially equal to the AC ripple frequency wherein the second signal (62b) is a phase quadrature of the first signal (62a), a second circuit (64, 66, 76, 78, 84 and 86) for combining these signals with a signal representing the bus signal (70) having the AC ripple superimposed thereon so as to derive a control signal (88 and 90) having substantially the same frequency and phase as the AC ripple, and third circuit (92) responsive to this control signal (88 and 90) so as to substantially suppress the AC ripple on the bus (18a and 18b).