专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09287812B2 Method and apparatus for stability control of open loop motor drive operation 有权
标题翻译：开环电机驱动运行稳定性控制方法及装置
公开(公告)号：US09287812B2
公开(公告)日：2016-03-15
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 , H02P21/00
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。

3. 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。

4. 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。

5. 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。

6. 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。

7. 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。

8. 发明授权

US5008608A Controller for starting and stopping electric motors 失效
标题翻译：控制器启动和停止电动机
公开(公告)号：US5008608A
公开(公告)日：1991-04-16
申请号：US456910
申请日：1989-12-26
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： H02P1/28 , H02P27/02
CPC分类号： H02P27/02
摘要： A three-phase motor is operated by a controller having sets of thyristors which trigger electricity from each phase of a supply to the motor. The controller measures the interval .phi. between the voltage and the current when one phase of the motor makes a zero crossing and measures the interval .gamma. when the thyristors are non-conductive during a half-cycle of the voltage for one phase. A control angle .theta. is calculated according to the equation .theta.=.phi.+K.gamma., where K is a positive number. The control angle .theta. is compared to a reference value to derive an error value. The times at which the thyristors are triggered is controlled in response to the error value. To start the motor, the reference value is gradually decreased to trigger the thyristors progressively earlier during each half cycle of the supply voltage. To stop the motor, the reference value is gradually increased to trigger the thyristors progressively later during each half cycle of the supply voltage.

9. 发明授权

US4916370A Motor stoppage apparatus and method using back emf voltage 失效
标题翻译：电动机停止装置及使用反电动势的方法
公开(公告)号：US4916370A
公开(公告)日：1990-04-10
申请号：US343439
申请日：1989-04-26
申请人： Timothy M. Rowan , Robert J. DeLange
发明人： Timothy M. Rowan , Robert J. DeLange
IPC分类号： H02P3/06 , H02P3/18
CPC分类号： H02P3/18
摘要： An electric motor is braked by applying pulses of current to a winding of the motor creating a negative torque which slows the motor. In order to detect when the motor has stopped and as a consequence, when to discontinue applying the current pulses, a periodic determination is performed as to whether the back emf voltage induced in a winding of the motor is within a range of defined values, such as between a positive reference voltage level and a negative reference voltage level. The application of pulses of current is terminated a given interval from when a predetermined number of consecutive determinations all indicate that the back emf voltage is within the range. The length of the given interval is derived from the amount of time between when the electricity began to be applied to brake the motor and the occurrence of the predetermined number of consecutive determinations.

10. 发明授权

US4706012A Frequency compensated regulator 失效
标题翻译：频率补偿调节器
公开(公告)号：US4706012A
公开(公告)日：1987-11-10
申请号：US863015
申请日：1986-05-14
申请人： Russel J. Kerkman , Timothy M. Rowan
发明人： Russel J. Kerkman , Timothy M. Rowan
IPC分类号： H02M7/48 , H02P21/00 , H02P27/04 , H02P5/40 , G05F1/44
CPC分类号： H02M7/48
摘要： A regulator for a closed loop control system receives a sinusoidal reference input signal i* and sums it with a feedback signal i to produce an error signal. A control signal is produced by the regulator by combining signal components which include: (a) a component proportional to the error signal; (b) a componet proportional to the integral of the error signal; and (c) a component related to the frequency of the reference input signal. The latter component insures that an accurate control signal is produced by the regulator over a wide frequency range.
摘要翻译：用于闭环控制系统的调节器接收正弦参考输入信号i *并将其与反馈信号i相加以产生误差信号。控制信号由调节器通过组合信号分量产生，包括：（a）与误差信号成比例的分量; （b）与误差信号的积分成正比的分量; 和（c）与参考输入信号的频率相关的分量。后一部件确保了调节器在较宽的频率范围内产生精确的控制信号。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式