公开(公告)号：US4475150A

公开(公告)日：1984-10-02

申请号：US372750

申请日：1982-04-28

Applicant: John D. D'Atre ,  Paul M. Espelage ,  David L. Lippitt ,  Loren H. Walker

Inventor： John D. D'Atre ,  Paul M. Espelage ,  David L. Lippitt ,  Loren H. Walker

IPC: H02H7/122 ,  H02H7/12 ,  H02M5/45 ,  H02H7/00

CPC classification number: H02M5/4505 ,  H02H7/1216

Abstract: A fault protective system for a load commutated inverter motor drive including an AC to DC source side converter coupled from an AC source to a DC to AC load side converter via a DC link circuit and wherein the load side converter supplies AC power of varying magnitude and frequency to the synchronous motor load. A pair of microcomputers interlinked by a common digital memory respectively control the inverters and interface with hardware type sensor means for detecting the occurrence of a plurality of different types of faults. Additionally, a number of stored instructional sets or programs are respectively included in both microcomputers to detect by software means another plurality of faults. The detection of a fault on either side of the link circuit is communicated to the respective computer which subsequently communicates with the other microcomputer to effect a coordinated protective action in response to thyristor cell failures, circuit failures, and abnormal operating conditions. Cell failure faluts include those instances where a thyristor cell actually fails due to an open or short circuit as well as those cases where a cell fails to commutate properly due to firing strategy problems. Cirucit failures include open and short circuits both in the supply line and the motor leads, while abnormal operating conditions involve such things as low line voltage or excessive motor voltage.

Abstract translation: 一种用于负载换向的电动机驱动器的故障保护系统，其包括经由DC链路电路从AC电源耦合到DC至AC负载侧转换器的AC至DC源侧转换器，并且其中所述负载侧转换器提供不同大小的AC电力， 频率同步电机负载。 由公共数字存储器互连的一对微型计算机分别控制逆变器并与硬件型传感器装置进行接口，以检测多种不同类型故障的发生。 另外，两个微型计算机中分别包括多个存储的指令集或程序，以通过软件来检测另外的多个故障。 将链路电路的任一侧的故障的检测通信给相应的计算机，该计算机随后与另一个微型计算机进行通信，以响应于晶闸管电池故障，电路故障和异常操作条件而进行协调的保护动作。 电池故障故障包括由于开路或短路而导致晶闸管电池实际故障的情况，以及由于触发策略问题，电池无法正确换向的情况。 Cirucit故障包括供电线路和电机引线中的开路和短路，而异常工作条件涉及低线路电压或电机电压过大等情况。

公开(公告)号：US4298831A

公开(公告)日：1981-11-03

申请号：US132783

申请日：1980-03-24

Applicant: Paul M. Espelage ,  John D. D'Atre

Inventor： Paul M. Espelage ,  John D. D'Atre

IPC: H02P5/74 ,  H02P1/54 ,  H02P1/24 ,  H02P5/28 ,  H02P5/46

CPC classification number: H02P5/74

Abstract: A plurality of arbitrarily loaded induction machines are operated from a single, controlled current inverter by regulating the amplitude of inverter output current in response to the average of the individual induction machine phase angles, the machine phase angle being the phase relationship magnitude between machine air gap flux and current, and by regulating the frequency of inverter output current in response to the average of the individual induction machine phase angle and the slip frequency of the most heavily loaded induction machine. The most heavily loaded induction machine is thus assured of having sufficient flux, thereby greatly reducing the possibility of machine pull-out and resultant inverter instability.

Abstract translation: 多个任意加载的感应电机通过响应于各个感应电机相位角的平均值调节逆变器输出电流的幅度而从单个受控电流逆变器操作，机器相位角是机器气隙之间的相位关系幅度 通过调整变频器输出电流的频率，响应各感应电机相位角的平均值和最重负载的感应电机的滑差频率。 因此，负载最重的感应电机确保具有足够的通量，从而大大降低了机器拔出的可能性并导致逆变器的不稳定性。

公开(公告)号：US4215304A

公开(公告)日：1980-07-29

申请号：US948193

申请日：1978-10-02

Applicant: John D. D'Atre ,  Dennis F. Williamson

Inventor： John D. D'Atre ,  Dennis F. Williamson

IPC: H02P23/06 ,  H02P5/40

CPC classification number: H02P23/07

Abstract: Dynamic response of an a-c induction motor control system including an adjustable frequency and adjustable magnitude power source is made more stable during the transition from a motoring to an electrical braking mode by modifying the system characteristics as a function of rate of change of motor flux and torque magnitude during electrical braking. The control system responds to a torque command signal and a torque feedback signal to generate an error signal which controls the frequency of the excitation supplied to the motor and thus the torque developed by the motor. During electrical braking this error signal is modified as a direct function of the rate of change of motor flux and as an inverse function of the magnitude of torque developed by the motor. During the transition from motoring to electrical braking, when the system tends to be unstable, the rate of change of flux is relatively high while the motor torque is at a relatively low value. Accordingly, the error signal becomes very large in magnitude and rapidly forces the control system and motor out of the transition zone into a more stable operating zone. Once stabilized, modification of the error signal becomes negligible.

Abstract translation: 包括可调频率和可调幅度电源在内的交流感应电动机控制系统的动态响应在从电动到电制动模式的转变期间变得更稳定，通过改变作为电动机通量和转矩的变化率的函数的系统特性 电气制动时的大小。 控制系统响应于转矩指令信号和转矩反馈信号，以产生一个误差信号，该误差信号控制提供给电动机的励磁频率，从而产生由电动机产生的转矩。 在电制动期间，该误差信号被修改为电动机通量变化率的直接函数，并且作为电动机产生的转矩幅度的反函数。 在从电动转向电制动过程中，当系统趋于不稳定时，磁通变化率相对较高，而电动机转矩为相对较低的值。 因此，误差信号的大小变得非常大，并且将控制系统和电动机迅速地迫使过渡区域进入更稳定的操作区域。 一旦稳定，误差信号的修改变得可以忽略不计。

公开(公告)号：US07940131B2

公开(公告)日：2011-05-10

申请号：US12196794

申请日：2008-08-22

Applicant: Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

Inventor： Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

IPC: G05F1/70

CPC classification number: G01R19/2513 ,  H04B2203/5466

Abstract: An apparatus for rapidly tracking fundamental frequency information in the signal of an electric grid is a cross-coupled phase-lock loop filter (CCPLL) that includes the use of a phase-lock-loop (PLL) apparatus having a plurality individual filters, wherein an input for a first filter in the plurality of individual filters comprises the signal of the electric grid and an output signal from at least a second filter in the plurality of individual filters. A method for using the CCPLL includes applying a signal to the CCPLL and monitoring the output of the CCPLL. Use of the CCPLL may be accomplished or modeled via computer instructions stored on machine readable media.

Abstract translation: 一种用于在电网信号中快速跟踪基频信息的装置是交叉耦合锁相环路滤波器（CCPLL），其包括使用具有多个单独滤波器的锁相环（PLL）装置，其中 多个单独滤波器中的第一滤波器的输入包括电网的信号和来自多个单独滤波器中的至少第二滤波器的输出信号。 使用CCPLL的方法包括将信号应用于CCPLL并监视CCPLL的输出。 CCPLL的使用可以通过存储在机器可读介质上的计算机指令来实现或建模。

公开(公告)号：US4507723A

公开(公告)日：1985-03-26

申请号：US458108

申请日：1983-01-14

Applicant: William D. Brackman, Jr. ,  John D. D'Atre ,  Loren H. Walker

Inventor： William D. Brackman, Jr. ,  John D. D'Atre ,  Loren H. Walker

IPC: H02M7/219 ,  H02M7/529 ,  H02M7/155

CPC classification number: H02M7/529 ,  Y10S388/917 ,  Y10S388/922

Abstract: A method of adaptively controlling the time of rendering the individual controlled devices of a controllable power conversion bridge includes the sensing of the instant in time at which the current from the bridge to a load becomes discontinuous. From the time of this sensing, the time period to a predetermined time such as a normally calculated time of rendering the controlled devices conductive is derived. This time period is then multiplied by a multiplier and the resultant product is combined with the predetermined time to provide an actual time of rendering the controlled devices conductive.

Abstract translation: 自适应控制渲染可控功率转换桥的各个受控设备的时间的方法包括对从桥到负载的电流变得不连续的时刻的感测。 从该感测的时间开始，导出诸如正常计算的使受控装置导电的时间的预定时间的时间段。 然后将该时间周期乘以乘数，并将所得乘积与预定时间相结合，以提供使受控装置导通的实际时间。

公开(公告)号：US4215305A

公开(公告)日：1980-07-29

申请号：US948194

申请日：1978-10-02

Applicant: John D. D'Atre ,  Allan B. Plunkett

Inventor： John D. D'Atre ,  Allan B. Plunkett

IPC: H02P21/08 ,  H02P5/40

CPC classification number: H02P21/09

Abstract: An a-c electric induction motor control system having apparatus for balancing motor air-gap flux against motor stator current in a manner to derive a motor excitation command signal which tends to cause the control system to force the motor to operate on a predetermined torque versus slip frequency characteristic. The motor excitation command signal is utilized to regulate the magnitude of excitation supplied to the motor such that the air-gap flux level assumes a predetermined magnitude as a function of the motor slip frequency. Above motor corner point velocity, the balancing is modified in favor of flux such that the motor is operated in a constant horsepower mode.

Abstract translation: 一种交流电动感应电动机控制系统，其具有用于平衡电动机气隙磁通与电动机定子电流的装置，以导出电动机励磁指令信号，其倾向于使控制系统强制电动机以预定转矩对转差频率 特性。 电动机励磁指令信号用于调节供给电动机的励磁幅度，使得气隙磁通电平作为电动机转差频率的函数呈现预定的大小。 在电机角点速度以上，平衡被改变为有利于磁通，使得电动机在恒定功率模式下操作。

公开(公告)号：US20090015339A1

公开(公告)日：2009-01-15

申请号：US12196794

申请日：2008-08-22

Applicant: Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

Inventor： Haiqing Weng ,  John D. D'Atre ,  Robert A. Seymour ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

IPC: G01R23/00

CPC classification number: G01R19/2513 ,  H04B2203/5466

Abstract: An apparatus for rapidly tracking fundamental frequency information in the signal of an electric grid is a cross-coupled phase-lock loop filter (CCPLL) that includes the use of a phase-lock-loop (PLL) apparatus having a plurality individual filters, wherein an input for a first filter in the plurality of individual filters comprises the signal of the electric grid and an output signal from at least a second filter in the plurality of individual filters. A method for using the CCPLL includes applying a signal to the CCPLL and monitoring the output of the CCPLL. Use of the CCPLL may be accomplished or modeled via computer instructions stored on machine readable media.

Abstract translation: 一种用于在电网信号中快速跟踪基频信息的装置是交叉耦合锁相环路滤波器（CCPLL），其包括使用具有多个单独滤波器的锁相环（PLL）装置，其中 多个单独滤波器中的第一滤波器的输入包括电网的信号和来自多个单独滤波器中的至少第二滤波器的输出信号。 使用CCPLL的方法包括将信号应用于CCPLL并监视CCPLL的输出。 CCPLL的使用可以通过存储在机器可读介质上的计算机指令来实现或建模。

公开(公告)号：US07423412B2

公开(公告)日：2008-09-09

申请号：US11344730

申请日：2006-01-31

Applicant: Haiqing Weng ,  Robert A. Seymour ,  John D. D'Atre ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

Inventor： Haiqing Weng ,  Robert A. Seymour ,  John D. D'Atre ,  Allen M. Ritter ,  Xiaoming Yuan ,  Renchang Dai ,  Robert W. Delmerico

IPC: H02H7/06 ,  H02P9/00 ,  H02P11/00 ,  H02P9/04 ,  F02N11/06

CPC classification number: H02J3/386 ,  F03D9/255 ,  H02P9/007 ,  H02P29/025 ,  H02P2101/15 ,  H02P2207/073 ,  Y02E10/72 ,  Y02E10/763

Abstract: Method and apparatus that provide a response to the negative sequence current demands during a disturbance of the grid system connected to power-generating equipment, such as a wind turbine system, provide for tracking components in the grid signal, orienting at least a portion of the signal, and injecting the oriented portion. Controlled injection of negative sequence current provides for extending small-signal control response, and also provides for modifications of the apparent impedance to the grid interconnect of the power conversion equipment.

Abstract translation: 在与发电设备（例如风力涡轮机系统）连接的电网系统的干扰期间提供对负序电流需求的响应的方法和装置提供在电网信号中跟踪组件，定向至少部分 信号，并注入定向部分。 控制的负序电流注入提供了扩展的小信号控制响应，并且还提供对电力转换设备的电网互连的视在阻抗的修改。

公开(公告)号：US4764713A

公开(公告)日：1988-08-16

申请号：US943744

申请日：1986-12-19

Applicant: John D. D'Atre ,  William P. Giewont

Inventor： John D. D'Atre ,  William P. Giewont

IPC: H02P1/30 ,  H02K1/30

CPC classification number: H02P1/30

Abstract: A method for providing a smooth transition to powered operation in a motor control system in which a variable voltage inverter regulates power to the motor on a volts per Hertz basis. The method is particularly applicable to systems for energizing and rapidly gaining control of a motor driving a load in which the motor armature is turning at the time that power is supplied from the variable voltage converter. The method is implemented by sweeping the frequency of the excitation applied to an alternating current motor while holding the magnitude of the excitation at a level sufficient to prevent over current excitation of the motor.

Abstract translation: 一种用于在电动机控制系统中提供平稳过渡到动力操作的方法，其中可变电压逆变器以每赫兹伏特为单位调节对电动机的功率。 该方法特别适用于在从可变电压转换器供电的时刻对驱动负载的电动机进行激励和快速获取控制的系统，其中电动机电枢正在转动。 该方法通过扫描施加到交流电动机的激励频率来实现，同时将激励的幅度保持在足以防止电动机的过电流激励的水平。

公开(公告)号：US4449088A

公开(公告)日：1984-05-15

申请号：US333930

申请日：1981-12-23

Applicant: John H. Cutler ,  John D. D'Atre ,  Loren H. Walker

Inventor： John H. Cutler ,  John D. D'Atre ,  Loren H. Walker

IPC: H02P27/06 ,  H02M7/521 ,  H02P23/00 ,  H02M1/06 ,  H02P13/24

CPC classification number: H02M7/521

Abstract: A system, for use with a controlled current inverter to prevent malfunction of inverter action resulting from an insufficient capacitor voltage to effect commutation of an inverter bridge controlled rectifier, provides that the capacitor voltage is sensed and, if it is of insufficient value to effect rectifier commutation, the application of gating signals to the next to be rendered conductive controlled rectifier is inhibited. In order to achieve initial inverter operation, the inverter current is also sensed and the inhibit function is rendered ineffective until such time as the current reaches a predetermined value.

Abstract translation: 一种与受控电流逆变器一起使用以防止由于电容器电压不足导致逆变器桥式可控整流器的换向引起的变频器动作的故障的系统提供了感测电容器电压，并且如果不足以实现整流器的值 换向，门控信号施加到下一个导通可控整流器被抑制。 为了实现初始的逆变器操作，还感测到逆变器电流，并且禁止功能在电流达到预定值的时间之前无效。