公开(公告)号：US08593095B2

公开(公告)日：2013-11-26

申请号：US13114595

申请日：2011-05-24

申请人： Albert L. Markunas ,  Dhaval Patel

发明人： Albert L. Markunas ,  Dhaval Patel

IPC分类号： H02P6/16 ,  H02P1/46

CPC分类号： H02P6/20 ,  H02P6/18

摘要： An example method of initiating operation of a wound field synchronous machine in a motoring mode includes estimating an initial position of a rotor of a wound field synchronous machine using a carrier injection sensorless stimulation signal. The method tracks an operating position of the rotor based on current harmonics of the wound field synchronous machine. The method also calibrates the tracking using the initial position.

摘要翻译： 在电动模式中启动伤口同步电机的操作的示例方法包括使用载体注射无传感器刺激信号来估计伤口磁场同步电机的转子的初始位置。 该方法基于绕线现场同步电机的电流谐波跟踪转子的工作位置。 该方法还使用初始位置校准跟踪。

公开(公告)号：US08362728B2

公开(公告)日：2013-01-29

申请号：US12882379

申请日：2010-09-15

申请人： Dhaval Patel ,  Albert L. Markunas ,  Michael C. Harke

发明人： Dhaval Patel ,  Albert L. Markunas ,  Michael C. Harke

IPC分类号： H02P1/04 ,  H02P6/18

CPC分类号： H02P6/18

摘要： A method of operating a WFSM in a motoring mode determines a relative position of a PMG rotor with respect to the WFSM rotor. A PMG is coupled to the WFSM via a coupling shaft. A relative difference between the WFSM rotor position and the PMG rotor position is determined based on carrier injection sensorless (“CIS”) stimulation signals. The relative difference between the PMG rotor and the WFSM main machine in conjunction with the PMG rotor position is used to determine the WFSM rotor position during motoring operation of the main machine. A stator of the WFSM main machine is energized to maintain operation of the WFSM in response to the detected main rotor position.

摘要翻译： 在电动模式下操作WFSM的方法确定PMG转子相对于WFSM转子的相对位置。 PMG通过联轴器与WFSM连接。 基于载波注入无传感器（CIS）刺激信号确定WFSM转子位置和PMG转子位置之间的相对差异。 结合PMG转子位置，PMG转子和WFSM主机之间的相对差异用于确定主机运行过程中的WFSM转子位置。 WFSM主机的定子被通电，以便根据检测到的主转子位置来维持WFSM的运行。

公开(公告)号：US20100327820A1

公开(公告)日：2010-12-30

申请号：US12875760

申请日：2010-09-03

申请人： Albert L. Markunas ,  Vijay K. Maddali

发明人： Albert L. Markunas ,  Vijay K. Maddali

IPC分类号： H02P9/02

CPC分类号： H02P9/10 ,  H02P2101/30

摘要： A generator control unit (GCU) provides active damping of a synchronous generator by monitoring the speed of the synchronous generator and detecting oscillations in the monitored speed. The oscillations are indicative of torsional oscillations within the mechanical drivetrain including the synchronous generator or generators. In response to detected oscillations in the monitored speed, the GCU generates a varying set-point value that is used to control the excitation voltage provided to the synchronous generator. Varying the excitation voltage provided to the synchronous generator causes a variation in synchronous generator torque. By selectively varying the torque in the synchronous generator, the GCU provides active damping in the synchronous generator that decreases or dampens the torsional oscillations.

摘要翻译： 发电机控制单元（GCU）通过监视同步发电机的速度并以监视的速度检测振荡，提供同步发电机的主动阻尼。 振荡表示包括同步发电机或发电机在内的机械传动系统内的扭转振荡。 响应于检测到的监视速度的振荡，GCU产生用于控制提供给同步发电机的激励电压的变化的设定值。 改变提供给同步发电机的励磁电压会导致同步发电机转矩的变化。 通过选择性地改变同步发电机中的转矩，GCU在同步发电机中提供主动阻尼，减少或抑制扭转振荡。

公开(公告)号：US20090009129A1

公开(公告)日：2009-01-08

申请号：US11824659

申请日：2007-07-02

申请人： Albert L. Markunas ,  Vijay K. Maddali

发明人： Albert L. Markunas ,  Vijay K. Maddali

IPC分类号： H02P9/00

CPC分类号： H02P9/10 ,  H02P2101/30

摘要： A generator control unit (GCU) provides active damping of a synchronous generator by monitoring the speed of the synchronous generator and detecting oscillations in the monitored speed. The oscillations are indicative of torsional oscillations within the mechanical drivetrain including the synchronous generator or generators. In response to detected oscillations in the monitored speed, the GCU generates a varying set-point value that is used to control the excitation voltage provided to the synchronous generator. Varying the excitation voltage provided to the synchronous generator causes a variation in synchronous generator torque. By selectively varying the torque in the synchronous generator, the GCU provides active damping in the synchronous generator that decreases or dampens the torsional oscillations.

摘要翻译： 发电机控制单元（GCU）通过监视同步发电机的速度并以监视的速度检测振荡，提供同步发电机的主动阻尼。 振荡表示包括同步发电机或发电机在内的机械传动系统内的扭转振荡。 响应于检测到的监视速度的振荡，GCU产生用于控制提供给同步发电机的激励电压的变化的设定值。 改变提供给同步发电机的励磁电压会导致同步发电机转矩的变化。 通过选择性地改变同步发电机中的转矩，GCU在同步发电机中提供主动阻尼，减少或抑制扭转振荡。

公开(公告)号：US07132816B1

公开(公告)日：2006-11-07

申请号：US11358792

申请日：2006-02-20

申请人： Albert L. Markunas ,  Charles J. Romenesko

发明人： Albert L. Markunas ,  Charles J. Romenesko

IPC分类号： H02P6/18

CPC分类号： H02P21/00 ,  H02P21/32

摘要： A field oriented control system for a brushless wound field synchronous machine that determines positioning of a rotor for the machine from exciter stator electrical potentials and current harmonics.

摘要翻译： 一种用于无刷绕线场同步电机的场定向控制系统，其根据励磁机定子电势和电流谐波确定机器的转子的定位。

公开(公告)号：US5065577A

公开(公告)日：1991-11-19

申请号：US440519

申请日：1989-11-22

申请人： Albert L. Markunas

发明人： Albert L. Markunas

IPC分类号： F03C1/40

CPC分类号： F03C1/0686 ,  F16H61/423

摘要： The problem of energy wastage in power drive units having fixed displacement hydraulic motors is avoided in a system having a variable displacement hydraulic motor (10) without the expense normally associated with such variable displacement systems by a construction which includes a variable displacement hydraulic motor (10) provided with a hydraulic actuator (14). A servo valve (12) is adapted to be connected to a source of hydraulic fluid under pressure and a controller (24) and is connected to the motor (10) for controlling the flow of fluid thereto in response to signals received from the controller (24). A flow limiter (16) is connected between the servo valve (12) and a return to the fluid source. A flow sensor valve (18) is connected across the flow limiter (16) and is responsive to flow therethrough to provide a hydraulic control signal to the actuator (14) to control the displacement of the motor (10).

摘要翻译： 在具有可变排量液压马达（10）的系统中，避免了具有固定排量的液压马达的动力驱动单元中的能量浪费的问题，而不需要通过包括可变排量液压马达（10）的结构与这种可变排量系统相关联的费用 ）设置有液压致动器（14）。 伺服阀（12）适于连接到压力下的液压流体源和控制器（24），并且连接到电动机（10），用于响应于从控制器接收的信号来控制流体的流动 24）。 流量限制器（16）连接在伺服阀（12）和返回流体源之间。 流量传感器阀（18）跨过流量限制器（16）连接并且响应于流过其中的流动传感器阀（18）以向致动器（14）提供液压控制信号以控制马达（10）的位移。

公开(公告)号：US4751438A

公开(公告)日：1988-06-14

申请号：US810854

申请日：1985-12-18

申请人： Albert L. Markunas

发明人： Albert L. Markunas

IPC分类号： H02P6/06 ,  H02P6/02

CPC分类号： H02P6/06

摘要： Unlike brush-type DC motors, a brushless permanent magnet DC motor has an impedance which is resistive at low rotational speeds and becomes increasingly inductive at higher speeds. Consequently, a control for a brushless permanent magnet DC motor must control both supply voltage and commutation angle in order to maximize motor performance. The simultaneous control of both supply voltage and commutation angle is difficult to achieve and requires complex circuitry. The present invention overcomes this problem by providing first means for developing a motor performance command signal representing a desired motor operational characteristics, second means for developing a motor feedback signal representing an actual motor operational characteristic, and means coupled to the first and second developing means for deriving the commutation angle command signal and the voltage command signal from the motor performance command signal and the motor feedback signal so that the motor operates with the desired operational characteristic.

摘要翻译： 与电刷式直流电动机不同，无刷永磁直流电动机具有在低转速下具有阻力的阻抗，并且在较高速度下变得越来越感性。 因此，无刷永磁直流电动机的控制必须控制电源电压和换向角，以最大化电机性能。 电源电压和换向角的同时控制难以实现，并且需要复杂的电路。 本发明通过提供用于开发表示期望的电动机操作特性的电动机性能指令信号的第一装置来克服这个问题，用于开发表示实际电动机操作特性的电动机反馈信号的第二装置，以及耦合到第一和第二显影装置的装置， 从电动机性能指令信号和电动机反馈信号得出换向角指令信号和电压指令信号，使得电动机以期望的操作特性运行。