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：WO1995028031A1

公开(公告)日：1995-10-19

申请号：PCT/US1995004416

申请日：1995-04-11

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  BANSAL, Madan ,  ROZMAN, Gregory, I. ,  HEGLUND, William, S. ,  TSAI, Shan-chin

IPC: H02P07/00

CPC classification number: G01P3/48 ,  H02P21/18

Abstract: The present invention provides for detecting rotor speed through the use of sense coils (240) on the stator teeth. Voltage ripples caused by the rotor slots (SC-1) is detected by combining the signals of several sense coils so that the fundamental voltage signal is cancelled or rejected and only the ripple voltages remain which is a signal proportional to speed. Further, the present invention provides for using a generator (220) to control voltage to the induction motor (222) with a PWM inverter (226) to control frequency signals to the induction motor (222).

Abstract translation: 本发明提供了通过使用定子齿上的感测线圈（240）来检测转子速度。 通过组合几个感测线圈的信号来检测由转子槽（SC-1）引起的电压波纹，使得基本电压信号被抵消或被拒绝，并且仅纹波电压保持为与速度成比例的信号。 此外，本发明提供使用发电机（220）通过PWM逆变器（226）来控制对感应电动机（222）的电压，以控制到感应电动机（222）的频率信号。

公开(公告)号：WO1990006016A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004475

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROZMAN, Gregory, I. ,  MARKUNAS, Albert, L.

IPC: H02P03/18

CPC classification number: F02N11/04 ,  H02P9/08 ,  H02P2101/30

Abstract: The problem of providing an engine starting system from any one of a plurality of input power sources is solved with an engine start control apparatus operating a generator (12) as a synchronous motor and employing input power limiting. The motor receives power from a main inverter (46) and a control unit which provides for input power limiting and also constant power characteristics in the field weakening range. The control unit includes a pulse width modulation (PWM) generator (22) which is responsive to a voltage command and a commutation command to develop switching signals for controlling the switches in the start inverter. The voltage command is used to vary the duty cycle of the PWM signals. The commutation angle command is used to control the timing of the PWM signals. In addition to commutation angle control, the start control system employs field weakening control to obtain constant power characteristics.

公开(公告)号：WO1998006168A1

公开(公告)日：1998-02-12

申请号：PCT/US1997013739

申请日：1997-08-04

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROZMAN, Gregory, I. ,  MARKUNAS, Albert, L. ,  HANSON, Michael, J. ,  WEBER, Leland, E.

IPC: H02P09/02

CPC classification number: H02P9/02 ,  H02P9/08 ,  H02P9/302 ,  H02P2101/30

Abstract: A motor generator system (120) in accordance with the invention includes a prime mover (21) for driving an output shaft (18), a main motor generator (105), having a rotor driven by the output shaft, for producing electrical power on at least one output winding (36a-36c) in response to the prime mover rotating the output shaft and for driving the output shaft in response to operation as a motor; an exciter (102) for applying excitation to a field winding (34) of the main motor generator during operation for producing electrical power on the at least one output winding and for applying current to the field winding of the main motor and generator to produce a magnetic field in the field winding during operation of the main motor generator as a motor; circuitry (122), responsive to current in a field winding (204) of the exciter, for producing an output signal representing a position of the rotor of the main motor generator driven by the output shaft; and a main inverter (114), responsive to the output signal, for commutating application of electrical current to the at least one output winding to control operation of the main motor generator during operation as a motor.

Abstract translation: 根据本发明的电动发电机系统（120）包括用于驱动输出轴（18）的原动机（21），具有由输出轴驱动的转子的主电动发电机（105），用于产生电力 至少一个输出绕组（36a-36c）响应于原动机旋转输出轴并响应于作为电动机的操作来驱动输出轴; 用于在用于在所述至少一个输出绕组上产生电力的操作期间对所述主电动发电机的励磁绕组（34）施加励磁并且将电流施加到所述主电动机和发电机的励磁绕组的励磁器（102），以产生 在作为电动机的主电动发电机运行期间的励磁绕组中的磁场; 电路（122）响应于励磁机的励磁绕组（204）中的电流，用于产生表示由输出轴驱动的主电动发电机的转子位置的输出信号; 以及响应于所述输出信号的主逆变器（114），用于将电流整流到所述至少一个输出绕组，以在作为电动机的操作期间控制所述主电动发电机的操作。

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：WO1990006620A1

公开(公告)日：1990-06-14

申请号：PCT/US1989005134

申请日：1989-11-16

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROZMAN, Gregory, I. ,  MADDALI, Vijay, K.

IPC: H02P01/46

CPC classification number: F02N11/04 ,  H02P1/46

Abstract: The problem of excess size and weight resulting from the use of current sensors in a VSCF start system is solved by a motor control system (10) which utilizes a current estimator (68) to develop a current feedback value. The current estimator (68) is coupled to a rotor position detector (72) and an input power detector (78) to develop a signal representing the estimated current drawn by the motor (12).

公开(公告)号：WO1992017930A1

公开(公告)日：1992-10-15

申请号：PCT/US1992002595

申请日：1992-03-30

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROZMAN, Gregory, I.

IPC: H02J07/16

CPC classification number: H02P9/102 ,  H02H7/067 ,  H02H9/041 ,  H02P2101/30

Abstract: Prior power generation systems generated output voltages having relatively large, undesirable over-voltage transients due to sudden load reduction. In order to overcome this disadvantage, a power generation system for generating a DC bus voltage on a DC bus (14) is provided with a switch (80) coupled across the DC bus (14) to suppress over-voltage transients. The power generation system includes a synchronous generator (24) that generates AC power and a rectifier (54) that rectifies the AC power to produce DC power and supply the DC power to the DC bus (14). A voltage regulator (62) controls the magnitude of the DC bus voltage by varying the amount of current provided to a field winding (46) associated with the synchronous generator (24). A switch (80) is coupled across the DC bus (14) and is repeatedly switched when the DC bus voltage reaches a predetermined magnitude.

公开(公告)号：WO1990006621A1

公开(公告)日：1990-06-14

申请号：PCT/US1989005272

申请日：1989-11-16

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROZMAN, Gregory, I.

IPC: H02P01/46

CPC classification number: H02P1/46 ,  F02N11/04

Abstract: The problem of maintaining precision control of a synchronous motor (12) is solved in a motor start control (10) which utilizes an estimate of the amplitude of the fundamental wave component as a feedback value. The motor (12) receives power from a main inverter (46) and an excitation inverter (48). The inverters (46, 48) are controlled by a control unit (22) which includes a pulse width modulation generator (100) which is responsive to a voltage command (102) and a commutation command (104) to develop switching signals (88) for controlling the switches (S1-S6) in the main inverter (46). At speeds above a preselected minimum speed, the voltage command (102) is developed in a closed loop manner responsive to a feedback signal (116) representing an estimate of the fundamental output of the main inverter (46).

Abstract translation: 在利用基波分量的幅度的估计作为反馈值的电动机启动控制（10）中，解决了对同步电动机（12）的精确控制进行维持的问题。 电动机（12）从主逆变器（46）和励磁逆变器（48）接收电力。 逆变器（46,48）由控制单元（22）控制，该控制单元包括响应于电压指令（102）和换向指令（104）的脉宽调制发生器（100），以产生开关信号（88） 用于控制主逆变器（46）中的开关（S1-S6）。 在高于预选的最小速度的速度下，响应于表示主逆变器（46）的基本输出的估计的反馈信号（116），电压指令（102）以闭环方式展开。

公开(公告)号：WO1990006015A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004444

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  REYNOLDS, Richard, W. ,  ROZMAN, Gregory, I.

IPC: H02P01/00

CPC classification number: F02N11/04 ,  H02P9/08 ,  H02P23/20 ,  H02P2101/30

Abstract: The problem of reducing the effect of inaccuracies in rotor position detection for an engine starting system is solved in an engine start control apparatus (10) operating a generator (12) as a synchronous motor which employs acceleration control. The motor (12) receives power from a main inverter and an excitation inverter (48). The inverters (46, 48) are controlled by a control unit (22) which provides for acceleration control and closed loop reactive power control. The control unit (22) includes a pulse width modulation generator (100) which is responsive to a voltage command and a commutation command to develop switching signals for controlling the switches (S1-S6) in the main inverter (46). The voltage command is used to vary the duty cycle of the PWM signals. The commutation angle command is used to control the timing of the PWM signals. The commutation angle command is determined in accordance with an acceleration reference (112) and rotor position (70) feedback in a closed loop manner to maintain generally constant acceleration.

Abstract translation: 在作为采用加速控制的同步电动机的发电机（12）的发动机起动控制装置（10）中，解决了降低发动机起动系统的转子位置检测中的不准确度的影响的问题。 电动机（12）从主逆变器和励磁逆变器（48）接收电力。 逆变器（46,48）由控制单元（22）控制，该控制单元提供加速控制和闭环无功功率控制。 控制单元（22）包括脉冲宽度调制发生器（100），其响应于电压指令和换向指令，以产生用于控制主逆变器（46）中的开关（S1-S6）的开关信号。 电压指令用于改变PWM信号的占空比。 换向角指令用于控制PWM信号的定时。 根据加速度参考（112）和转子位置（70）以闭环方式反馈来确定换向角度命令以保持大致恒定的加速度。

公开(公告)号：WO1990006011A1

公开(公告)日：1990-05-31

申请号：PCT/US1989004457

申请日：1989-10-10

Applicant: SUNDSTRAND CORPORATION

Inventor： SUNDSTRAND CORPORATION ,  ROZMAN, Gregory, I. ,  BAITS, Paul, G.

IPC: H02H05/04

CPC classification number: H02H7/093 ,  F02N11/04

Abstract: It has been recognized that the generator (12) in a generating system (10) can be used in a starting mode to provide motive power to the prime mover (14) to accelerate the latter up to self-sustaining speed. During operation in the starting mode, one or more malfunctions may occur which can cause damage to or destruction of system components. A system for detecting the failure of a prime mover (14) to ignite within a prime mover speed range in which the prime mover (14) is expected to achieve a self-sustaining condition continuously senses speed and acceleration of the prime mover (14) and determines the minimum prime mover acceleration encountered while operating within the speed range.

Abstract translation: 已经认识到，发电系统（10）中的发电机（12）可以以启动模式使用，以向原动机（14）提供动力，以将其提高到自持速度。 在启动模式下运行期间，可能会发生一个或多个故障，这可能会导致系统组件的损坏或破坏。 用于检测原动机（14）在原动机速度范围内点燃的系统，其中原动机（14）预期实现自持状态连续地感测原动机（14）的速度和加速度， 并确定在速度范围内操作时遇到的最小原动机加速度。