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。

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).

公开(公告)号：WO1990002441A1

公开(公告)日：1990-03-08

申请号：PCT/US1989003222

申请日：1989-07-26

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  COOK, Alexander ,  BARNET, Robert

IPC: H02M07/06

CPC classification number: H02J1/102 ,  H02M7/08 ,  Y10T307/729

Abstract: A transformer rectifier unit (10) is provided for developing regulated DC output power from first (26) and second (28) sources of unregulated DC power. The transformer rectifier (20) connectable to a source (16) of AC input power and first (22) and second (24) secondary windings. The first secondary winding (22) develops AC power at a first level and the second secondary winding (24) develops AC power at a second level lower than the first level. First (26) and second (28) rectifier circuits are respectively coupled to the first (22) and second (24) secondary windings for rectifying the AC power therefrom to DC power having corresponding first and second DC levels. A switch S is coupled between an output VR1 of the first rectifier circuit (26) and an output VR2 of the second rectifier circuit (28) and is operable in first and second switching states to provide DC output power from one of the rectifier circuits to a load (14). A pulse-width modulation control circuit (32) is responsive to the difference between a desired DC output level and an actual DC output level and operates the switch (S) between first and second states to provide regulated DC output power. In an alternative embodiment of the invention, the transformer (52) comprises Y- secondary winding sets.

公开(公告)号：WO1994027359A1

公开(公告)日：1994-11-24

申请号：PCT/US1994004815

申请日：1994-05-06

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  CARR, Kenneth, R. ,  SHIPPLING, James, A. ,  MC ARTHUR, Malcolm, J. ,  ROZMAN, Gregory, I. ,  MARKUNAS, Albert, L. ,  HANSON, Michael, J. ,  WEBER, Leland, E. ,  MADDALI, Vijay, K. ,  NUECHTERLEIN, Paul, E. ,  COOK, Alexander ,  NGUYEN, Vietson ,  RINALDI, Mario, R.

IPC: H02P01/46

CPC classification number: F02N11/04 ,  F05B2220/50 ,  H02P9/302

Abstract: Systems and methods for starting a prime mover (21), such as a gas turbine engine of an aircraft auxiliary power unit (APU), are disclosed herein whereby an electromagnetic machine (10) is operated as a motor during operation in a self starting mode to bring the prime mover (21) up to selfsustaining speed. The same electromagnetic machine (10) is thereafter operated as a generator during operation in a generating mode.

Abstract translation: 本文公开了用于起动原动机（21）的系统和方法，例如飞机辅助动力单元（APU）的燃气涡轮发动机，其中电磁机器（10）在自启动模式下操作时作为电动机操作 带动原动机（21）达到自救速度。 此后，在生成模式中运行时，同一电磁机（10）作为发电机运转。

公开(公告)号：WO1990005405A1

公开(公告)日：1990-05-17

申请号：PCT/US1989004435

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  COOK, Alexander

IPC: H02M05/45

CPC classification number: H02J3/01 ,  Y02E40/40

Abstract: A variable speed, constant frequency electrical generating system has a variable speed, engine driven generator. The system operates in either a generate or an engine start mode. A bidirectional filter connected between the rectifier-converter and the AC bus traps or blocks switching harmonics from the rectifier-converter. Short trap circuits are connected either phase-to-phase or phase-to-neutral.

公开(公告)号：WO1988000653A1

公开(公告)日：1988-01-28

申请号：PCT/US1987001687

申请日：1987-07-15

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  COOK, Alexander

IPC: F02N11/00

CPC classification number: F02N11/04 ,  F05B2220/50

Abstract: Engine start capability may be added to an aircraft generating system including a variable speed, constant frequency inverter (34) by placing transistors (48) in shunt relation to diodes (22) forming part of a full wave rectifier for rectifying A.C. power from a brushless generator output winding (10) which is normally supplied to the inverter (34) for conversion to constant frequency A.C. power. A source of D.C. power (60) may be connected to the diodes (22) and transistors (48) and the latter are operated by an inverter controller (52) to convert the D.C. power so provided to alternating current to be fed to the brushless generator output windings (10) and cause the brushless generator to operate as an A.C. motor for the starting of a turbine engine (18) or the like.

Abstract translation: 发动机启动能力可以通过将形成与全波整流器的一部分的二极管（22）并联的晶体管（48）放置在包括可变速恒定频率逆变器（34）的飞行器发电系统中来整流来自无刷的AC电力 发电机输出绕组（10），其通常被提供给逆变器（34）以转换成恒定的交流电力。 DC电源（60）的源极可以连接到二极管（22）和晶体管（48），并且后者由逆变器控制器（52）操作，以将所提供的DC电力转换成交流电，以供给无刷 发电机输出绕组（10），并使无刷发电机作为用于起动涡轮发动机（18）等的AC电动机。

公开(公告)号：EP0276295A1

公开(公告)日：1988-08-03

申请号：EP87905496.0

申请日：1987-07-15

Applicant: SUNDSTRAND CORPORATION

Inventor： COOK, Alexander

IPC: F02N11

CPC classification number: F02N11/04 ,  F05B2220/50

Abstract: On peut ajouter la capacité de démarrage au système générateur d'un moteur d'avion comprenant un onduleur à vitesse variable et à fréquence constante (34), en plaçant des transistors (48) en dérivation par rapport à des diodes (22) faisant partie d'un redresseur biphasé destiné à redresser l'alimentation en courant alternatif provenant d'un enroulement de sortie de générateur sans balais (10) et alimentant normalement l'onduleur (34) en vue de sa conversion en courant alternatif à fréquence constante. Une source de courant continu (60) peut être connectée aux diodes (22) et aux transistors (48), ceux-ci étant actionnés par un dispositif de commande (52) de l'onduleur afin de convertir le courant continu fourni en courant alternatif destiné à alimenter les enroulements de sortie de générateurs sans balais (10) et permettre au générateur sans balais de fonctionner comme un moteur à courant alternatif en vue du démarrage d'un turbo moteur (18) ou autre.

Abstract translation: 通过将晶体管（48）相对于二极管（22）并联放置，起动机容量可以被添加到包括变速恒频变换器（34）的飞机发动机发电机系统中， 一个两相整流器，用于整流来自无刷发电机输出绕组（10）的交流电源，并正常地提供逆变器（34）以转换成恒定频率的交流电源。 直流电源（60）可以连接到由逆变器的控制器（52）驱动的二极管（22）和晶体管（48），以将供应的直流电转换为交流电。 用于提供无刷发电机（10）的输出绕组并且使无刷发电机能够用作用于启动涡轮发动机（18）等的AC电动机。

公开(公告)号：EP0302107A1

公开(公告)日：1989-02-08

申请号：EP88903016.0

申请日：1988-02-18

Applicant: SUNDSTRAND CORPORATION

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

IPC: H02J3 ,  H02P9

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

Abstract: Les systèmes d'alimentation de puissance de l'art antérieur développent une énergie à courant continu et/ou à courant alternatif à fréquence constante à partir d'une puissance motrice à vitesse variable et nécessitent des convertisseurs d'énergie électrique complexes, des machines électromagnétiques spéciales ou des entraînements à vitesse constante encombrants. Ces composants peuvent rendre le système inapproprié dans certaines applications. De manière à résoudre ce problème, un système d'alimentation de puissance électrique pour le développement de puissance électrique à partir d'une puissance motrice à vitesse variable produite par un moteur principal comprend un additioneur de vitesse différentiel (18) ayant un premier arbre (16) couplé au moteur principal (12) ainsi que des deuxième et troisième arbres (20, 24) couplés au premier et au second générateurs (22, 26), respectivement, un dispositif de conditionnement de puissance (30) couplé au second générateur (26) pour conditionner la puissance développée ainsi que des moyens (34) pour la régulation de la puissance conditionnée développée par le second générateur (26) de sorte que le premier générateur (22) développe une puissance électrique à courant alternatif à fréquence constante.

公开(公告)号：EP0706728A1

公开(公告)日：1996-04-17

申请号：EP94917289.0

申请日：1994-05-06

Applicant: SUNDSTRAND CORPORATION

Inventor： CARR, Kenneth, R. ,  SHIPPLING, James A. ,  MC ARTHUR, Malcolm, J. ,  ROZMAN, Gregory, I. ,  MARKUNAS, Albert, L. ,  HANSON, Michael, J. ,  WEBER, Leland, E. ,  MADDALI, Vijay, K. ,  NUECHTERLEIN, Paul, E. ,  COOK, Alexander ,  NGUYEN, Vietson ,  RINALDI, Mario, R.

IPC: F01D15 ,  F02C7 ,  F02N11 ,  H02P9

CPC classification number: F02N11/04 ,  F05B2220/50 ,  H02P9/302

Abstract: Systems and methods for starting a prime mover (21), such as a gas turbine engine of an aircraft auxiliary power unit (APU), are disclosed herein whereby an electromagnetic machine (10) is operated as a motor during operation in a self starting mode to bring the prime mover (21) up to selfsustaining speed. The same electromagnetic machine (10) is thereafter operated as a generator during operation in a generating mode.