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1. 发明申请

US20150002067A1 METHOD AND APPARATUS FOR STABILITY CONTROL OF OPEN LOOP MOTOR DRIVE OPERATION 有权
标题翻译：开环循环电机驱动运行稳定性控制方法与装置
公开(公告)号：US20150002067A1
公开(公告)日：2015-01-01
申请号：US14193329
申请日：2014-02-28
申请人： Thomas Nondahl , Jingbo Liu , Peter Schmidt , Semyon Royak , Timothy M. Rowan
发明人： Thomas Nondahl , Jingbo Liu , Peter Schmidt , Semyon Royak , Timothy M. Rowan
IPC分类号： H02P6/08
CPC分类号： H02P6/08 , H02P21/00
摘要： Motor drives and control methods are presented for sensorless motor speed control in which inverter output currents are sampled from the inverter output and a frequency modulation value is determined based on the current feedback. A speed or frequency setpoint is adjusted at least partially according to the frequency modulation value to provide an adjusted frequency or speed setpoint value that is then used in controlling the inverter to provide stability control to mitigate hunting or motor stoppage.
摘要翻译：电机驱动和控制方法用于无转速电机速度控制，其中变频器输出电流从变频器输出采样，并根据电流反馈确定频率调制值。速度或频率设定点至少部分地根据频率调制值进行调整，以提供调整后的频率或转速设定值，然后用于控制逆变器以提供稳定性控制以减轻寻线或电机停机。

2. 发明授权

US5717305A Method and apparatus for starting an electric motor 失效
标题翻译：启动电动机的方法和装置
公开(公告)号：US5717305A
公开(公告)日：1998-02-10
申请号：US673657
申请日：1996-06-28
申请人： Brian J. Seibel , Timothy M. Rowan , Russel J. Kerkman , Kevin G. Stachowiak
发明人： Brian J. Seibel , Timothy M. Rowan , Russel J. Kerkman , Kevin G. Stachowiak
IPC分类号： H02P1/26 , H02P21/00
CPC分类号： H02P1/26 , H02P21/34
摘要： A method and apparatus for controlling an AC motor are described wherein a frequency generator is configured to generate a signal representative of the stator electrical frequency and to estimate the rotor electrical frequency of the motor during operation. The generator operates on torque and flux current reference signals and on d-axis voltage reference and feedback signals to determine the electrical frequencies. The generator ramps up gain values applied to the torque current reference signals and to a voltage error signals representative of the difference between the d-axis voltage reference and feedback signals during a startup phase of operation to enhance performance and stability of the drive during this phase. The generator includes feedforward and feedback portions that contribute components of the final stator frequency signal. The components are filtered differently during startup and running phases of operation to provide the desired frequency signals.
摘要翻译：描述了一种用于控制AC电动机的方法和装置，其中频率发生器被配置为产生表示定子电频率的信号，并且在运行期间估计电动机的转子电频率。发电机工作在扭矩和磁通电流参考信号以及d轴电压参考和反馈信号上，以确定电气频率。发电机在运行启动阶段时，增加施加于转矩电流参考信号的增益值和表示d轴参考电压和反馈信号之间的差值的电压误差信号，以提高驱动器在此阶段的性能和稳定性。发生器包括前馈和反馈部分，其贡献最终定子频率信号的分量。组件在运行的启动和运行阶段被不同地过滤，以提供所需的频率信号。

3. 发明授权

US5032771A Slip control based on sensing voltage fed to an induction motor 失效
标题翻译：基于感应电压的滑差控制
公开(公告)号：US5032771A
公开(公告)日：1991-07-16
申请号：US565288
申请日：1990-08-09
申请人： Russel J. Kerkman , Timothy M. Rowan
发明人： Russel J. Kerkman , Timothy M. Rowan
IPC分类号： H02P21/08
CPC分类号： H02P21/09
摘要： An electronic motor drive for vector control of an induction motor controls slip and operating frequency in response to changes in stator voltage. The drive includes a torque control loop, a flux control loop and a frequency control loop which includes slip control in response to a voltage difference. In the constant horsepower range, above base speed, slip is controlled in response to an error between a d-axis reference voltage that is sampled at base speed and a d-axis feedback voltage that is sensed when the motor is operating above base speeed. Flux-weakening is provided in response to an error between a q-axis reference voltage that is sensed when the motor is operating at base speed and a q-axis feedback voltage that is sensed when the motor is operating above speed.
摘要翻译：用于感应电动机的矢量控制的电动机驱动器根据定子电压的变化来控制滑差和工作频率。驱动器包括扭矩控制回路，磁通控制回路和频率控制回路，其包括响应于电压差的滑差控制。在恒功率范围内，在基本速度以上时，响应于以基准速度采样的d轴参考电压和当电机在基准频率以上运行时感测到的d轴反馈电压之间的误差来控制滑差。响应于当电动机以基准速度操作时感测到的q轴参考电压和当电动机正在高于速度运行时感测到的q轴反馈电压之间的误差而提供磁通弱化。

4. 发明授权

US4978897A Motor controller with an improved stopping technique 失效
标题翻译：电机控制器具有改进的停止技术
公开(公告)号：US4978897A
公开(公告)日：1990-12-18
申请号：US514896
申请日：1990-04-26
申请人： John C. Merrison , Robert J. DeLange , Timothy M. Rowan
发明人： John C. Merrison , Robert J. DeLange , Timothy M. Rowan
IPC分类号： H02P3/18 , H02P27/02
CPC分类号： H02P3/18 , H02P27/026
摘要： An electric motor has first, second and third stator windings supplied by a source of alternating voltage having three phases A, B and C, respectively. A separate thyristor switch assembly couples each stator winding to an alternating voltage phase when said switch means is rendered conductive by a trigger signal. When the speed of the motor is above a first predefined level, the thyristor switch assemblies are triggered, in response to the polarity of the voltage between phases A and B being opposed to the polarity of back emf voltage induced across the third winding, to apply current through said first and second stator windings. However, when the speed of the motor is below the first predefined level, the thyristor switch assemblies are triggered, in response to the polarity of the voltage betwen phases B and C being opposed to the polarity of back emf voltage induced across the third winding, to apply current through said second and third stator windings. Subsequently when the speed of the motor further decreases below a second predefined level, current is applied through said second and third stator windings during every cycle of the voltage between phases B and C.

5. 发明授权

US4862052A Method for stopping an electric motor 失效
标题翻译：停止电动马达的方法
公开(公告)号：US4862052A
公开(公告)日：1989-08-29
申请号：US165538
申请日：1988-03-08
申请人： Peter J. Unsworth , John C. Merrison , Timothy M. Rowan
发明人： Peter J. Unsworth , John C. Merrison , Timothy M. Rowan
IPC分类号： H02P3/24 , H02P3/18
CPC分类号： H02P3/18
摘要： An electric motor is braked by sensing the polarity of voltage of the alternating electricity for powering the motor and sensing the polarity of the voltage induced in the motor by the back electromotive force. When these polarities are opposite the electricity is applied to the motor to generate a braking torque. The application of the electricity is stopped a given interval after it begins to be applied during consecutive voltage cycles. This interval is derived from the time period between when braking commenced to when the electricity was applied during consecutive cycle.

6. 发明授权

US5298847A Counter EMF detector for use in electric motor controllers 失效
标题翻译：用于电动机控制器的反电动势检测器
公开(公告)号：US5298847A
公开(公告)日：1994-03-29
申请号：US875912
申请日：1992-04-29
申请人： Russel J. Kerkman , Brian J. Seibel , Timothy M. Rowan
发明人： Russel J. Kerkman , Brian J. Seibel , Timothy M. Rowan
IPC分类号： H02P21/14 , H02P7/00
CPC分类号： H02P21/18
摘要： A non-invasive system for accurately determining the counter EMF or speed voltages in an electric motor during motor operation. The system includes a mechanism for determining the phase angle of the stator current within the dq frame of reference and a mechanism for transforming feedback voltages into a new frame of reference defined by this phase angle. The speed voltage values thereby detected are free from stator resistance effects and represent parameters of improved accuracy which can be used in motor control functions.
摘要翻译：一种用于在电动机运行期间精确地确定电动机中的电动势或速度电压的非侵入式系统。该系统包括用于确定dq参考系中定子电流的相位角的机构，以及用于将反馈电压变换成由该相位角定义的新的参考系的机构。由此检测到的速度电压值没有定子电阻效应，并且表示可用于电动机控制功能的改进的精度的参数。

7. 发明授权

US5140248A Open loop motor control with both voltage and current regulation 失效
标题翻译：开环电机控制，具有电压和电流调节
公开(公告)号：US5140248A
公开(公告)日：1992-08-18
申请号：US504110
申请日：1990-04-03
申请人： Timothy M. Rowan , Russel J. Kerkman
发明人： Timothy M. Rowan , Russel J. Kerkman
IPC分类号： H02M7/5387 , H02P27/08
CPC分类号： H02P27/08 , H02M7/53873 , H02P21/24 , H02M2007/53876
摘要： An open-loop pulse width modulation (PWM) motor control for an induction motor includes a voltage regulator loop which is wrapped around a current regulator. When a load is suddenly encountered by the motor, voltage drops at the output of the current regulator. This is sensed and fed back to a voltage regulator and to a current limiter which then adjust the input signal to the current regulator to prevent an overcurrent that will trip a circuit protection device. The voltage regulator and current limiter may be implemented in either analog or digital circuitry.
摘要翻译：用于感应电动机的开环脉宽调制（PWM）电机控制器包括一个围绕电流调节器缠绕的电压调节器回路。当电机突然遇到负载时，电流调节器的输出端电压下降。这被感测并反馈到电压调节器和电流限制器，然后电流限制器将输入信号调整到电流调节器以防止会使电路保护装置跳闸的过电流。电压调节器和限流器可以在模拟或数字电路中实现。

8. 发明授权

US5003241A Motor stoppage detection using back emf voltage 失效
标题翻译：使用反电动势电压进行电机停机检测
公开(公告)号：US5003241A
公开(公告)日：1991-03-26
申请号：US312357
申请日：1989-02-15
申请人： Timothy M. Rowan , John C. Merrison
发明人： Timothy M. Rowan , John C. Merrison
IPC分类号： H02P3/18
CPC分类号： H02P3/18
摘要： An AC electric motor can be braked by applying current pulses to the motor when the polarity of the supply voltage is opposed to the polarity of the back electromotive force (emf) voltage across a stator coil of the motor. This current application continues until the motor has stopped. The stoppage is detected by sensing when the current is being applied during every cycle of the supply voltage. Thereafter, the polarity pattern of back emf voltage induced across each of the motor stator coils is sensed. The occurrence of a back emf voltage polarity pattern that remains unchanged for a given number of cycles is detected. Thereafter, a change in this pattern is sensed and the braking current application either ceases or continues for an additional predetermined interval.
摘要翻译：当电源电压的极性与电动机的定子线圈上的反电动势（emf）电压的极性相反时，通过向电动机施加电流脉冲可以制动交流电动机。这个当前的应用程序继续，直到电机停止。通过在电源电压的每个周期期间检测何时施加电流来检测停止。此后，感测在每个电机定子线圈上感应的反电动势电压的极性图案。检测到对于给定数量的周期保持不变的反电动势电压极性图案的发生。此后，感测到该模式的变化，并且制动电流应用停止或继续另外的预定间隔。

9. 发明授权

US07135833B2 Motor control for flux-reduced braking 有权
标题翻译：减速制动的电机控制
公开(公告)号：US07135833B2
公开(公告)日：2006-11-14
申请号：US11261352
申请日：2005-10-28
申请人： Robert J. DeLange , Timothy M. Rowan
发明人： Robert J. DeLange , Timothy M. Rowan
IPC分类号： H02P3/18
CPC分类号： G02B21/16 , G01J1/04 , G01J1/0411 , G01J1/0414 , G01J1/0429 , G01J1/044 , G01J1/0455 , G01J1/0462 , G01N21/956 , G02B17/06 , G02B17/061 , G02B21/04
摘要： A method and apparatus for braking an AC motor in the higher portion of its speed range includes substantially reducing flux before applying reverse torque commands to brake the motor. A DC link bus regulator is employed to prevent increases in bus voltage and frequency.
摘要翻译：用于在其速度范围的较高部分中制动AC电动机的方法和装置包括在施加反向转矩命令以制动电动机之前大幅减少通量。采用DC链路总线调节器来防止总线电压和频率的增加。

10. 发明授权

US5965995A Transient inductance tuner for motor control 失效
标题翻译：用于电机控制的瞬态电感调谐器
公开(公告)号：US5965995A
公开(公告)日：1999-10-12
申请号：US933214
申请日：1997-09-18
申请人： Brian J. Seibel , Russel J. Kerkman , Timothy M. Rowan
发明人： Brian J. Seibel , Russel J. Kerkman , Timothy M. Rowan
IPC分类号： H02P21/00 , H02P21/14 , H02P5/28 , H02P7/00
CPC分类号： H02P21/141 , H02P21/22
摘要： A method and apparatus used with a field oriented motor controller for providing corrected transient inductance estimates during normal motor operation. The invention monitors q-axis feedback and command voltages and, based on an error therebetween, modifies a transient inductance estimate to compensate for the error and force the feedback voltage to equal the command voltage thereby facilitating field oriented control. The invention can be used either during a commissioning procedure to provide an inductance correction table for use during normal motor operation or can be used during normal motor operation to tune the inductance estimate.
摘要翻译：一种与磁场定向电动机控制器一起使用的方法和装置，用于在正常电动机运行期间提供校正的瞬变电感估计。本发明监测q轴反馈和指令电压，并且基于它们之间的误差修改瞬态电感估计以补偿误差并迫使反馈电压等于指令电压，由此有助于磁场定向控制。本发明可以在调试过程中用于提供在正常电动机操作期间使用的电感校正表，或者可以在正常的电动机操作期间用于调整电感估计。

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