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公开(公告)号：US5121043A
公开(公告)日：1992-06-09
申请号：US589846
申请日：1990-09-28
IPC分类号： H02M7/5387 , H02P27/08
CPC分类号： H02P27/08 , H02M7/53873
摘要： An open loop, volts/hertz motor drive for control of an induction motor adjusts the voltage command to a sine-triangle PWM inverter to compensate for reduction in PWM inverter gain and to compensate for variations in DC bus voltage in the pulse dropping transition region between PWM operation and six-step operation. The drive includes a microelectronic processor interfaces to DC bus voltage sensing circuitry and to the PWM inverter.
摘要翻译： 用于控制感应电动机的开环，伏特/赫兹电机驱动器调节对正弦三角PWM逆变器的电压指令，以补偿PWM逆变器增益的降低，并补偿在PWM逆变器增益之间的脉冲下降过渡区域中的直流母线电压的变化 PWM操作和六步操作。 该驱动器包括一个微电子处理器接口，直流总线电压检测电路和PWM逆变器。
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公开(公告)号：US08964427B2
公开(公告)日：2015-02-24
申请号：US13537993
申请日：2012-06-29
CPC分类号： H03H11/04 , G01R25/00 , H02M1/4233 , H03F1/565 , H03H7/38 , Y02B70/126
摘要： A phase angle detector with a PLL, a power converter, and a method for reducing offsets in an input signal, in which an adaptive offset processor selectively removes a DC offset component from the input signal to generate a modified signal including a fundamental frequency component and higher order harmonics of the input signal with the DC offset component removed, and the PLL provides a phase angle signal at least partially according to the modified signal.
摘要翻译： 具有PLL的相位角检测器，功率转换器和用于减少输入信号中的偏移的方法，其中自适应偏移处理器从输入信号中选择性地去除DC偏移分量，以产生包括基频分量的修正信号， 去除DC偏移分量的输入信号的高阶谐波，并且PLL根据修改的信号至少部分地提供相位角信号。
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3.发明授权公开(公告)号：US06720748B1
公开(公告)日：2004-04-13
申请号：US10365216
申请日：2003-02-12
申请人： Brian J. Seibel , Russel J. Kerkman
发明人： Brian J. Seibel , Russel J. Kerkman
IPC分类号： H02P700
CPC分类号： H02P21/16
摘要： A method for use with an adjustable frequency controller to deliver current to an electromagnetic load including a stator and a rotor, the method for identifying a flux current estimate and comprising the steps of (a) identifying a rated torque value; (b) providing an initial q-axis current estimate; (c) using the q-axis current estimate to identify a d-axis current estimate; (d) mathematically combining the d-axis current estimate and the q-axis current estimate to identify a torque estimate; (e) comparing the rated torque value to the torque estimate; (f) where the torque estimate is similar to the rated torque value skipping to step (i); (g) altering the q-axis current estimate; (h) repeating steps (c) through (f); and (i) storing the d-axis and q-axis current estimates as flux and torque current values for subsequent use.
摘要翻译： 一种与可变频率控制器一起使用以将电流传递到包括定子和转子的电磁负载的方法，用于识别通量电流估计的方法，并且包括以下步骤：（a）识别额定转矩值; （b）提供初始q轴电流估计; （c）使用q轴电流估计来识别d轴电流估计; （d）在数学上组合d轴电流估计和q轴电流估计以识别扭矩估计; （e）将额定转矩值与转矩估计进行比较; （f）其中扭矩估计类似于跳至步骤（i）的额定转矩值; （g）改变q轴当前估计值; （h）重复步骤（c）至（f）; 和（i）将d轴和q轴电流估计值存储为随后使用的通量和转矩电流值。
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公开(公告)号：US6014007A
公开(公告)日：2000-01-11
申请号：US163107
申请日：1998-09-29
CPC分类号： H02P21/34
摘要： A method and apparatus for starting a motor drive into a rotating motor, the method including determining an initial search frequency and search current wherein the current is less than a rated drive current, providing a d-axis flux generating current to the motor at the search frequency and at a magnitude equal to the search current, monitoring a q-axis flux error, decreasing the search frequency until the d-axis flux error is less than a threshold value, thereafter increasing the search current to the rated drive current and, after a flux-up period, providing both q-axis torque producing current and d-axis flux producing current to the motor.
摘要翻译： 一种用于启动电动机驱动进入旋转电动机的方法和装置，所述方法包括确定初始搜索频率和搜索电流，其中电流小于额定驱动电流，在搜索时向电动机提供d轴磁通发生电流 频率和等于搜索电流的幅度，监测q轴磁通误差，减小搜索频率，直到d轴磁通误差小于阈值，然后将搜索电流增加到额定驱动电流，之后 向电动机提供q轴转矩产生电流和d轴磁通产生电流的磁通上升期。
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公开(公告)号：US5923144A
公开(公告)日：1999-07-13
申请号：US672705
申请日：1996-06-28
CPC分类号： H02P21/18
摘要： A method for generating electrical frequencies of a alternating current motor is disclosed wherein a torque current command signal, a d-axis voltage command signal and a d-axis voltage feedback signal are combined to generate the stator electrical frequency in the synchronous reference frame. The method also provides an estimate of the rotor electrical frequency as well as of the motor speed. The frequency generator is preferably incorporated in a variable frequency motor controller for driving a motor at desired speeds independent of changing load conditions. The generator permits the controller to maintain field oriented control without the need for speed sensing and feedback.
摘要翻译： 公开了一种用于产生交流电动机的电频率的方法，其中组合了转矩电流指令信号，d轴电压指令信号和d轴电压反馈信号，以在同步参考系中产生定子电频率。 该方法还提供转子电频率以及电动机速度的估计。 频率发生器优选地结合在变频电动机控制器中，用于以不变的负载条件以所需速度驱动电动机。 发电机允许控制器维护磁场定向控制，而不需要速度感测和反馈。
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公开(公告)号：US5502360A
公开(公告)日：1996-03-26
申请号：US401522
申请日：1995-03-10
申请人： Russel J. Kerkman , Brian J. Seibel , Doyle Busse
发明人： Russel J. Kerkman , Brian J. Seibel , Doyle Busse
CPC分类号： H02P21/16 , H02P2207/01
摘要： A non-invasive system for accurately determining the stator resistance 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. Counter EMFs are detected which are free of stator resistance and used to force the counter EMF components of the stator winding voltages to conform to desired values. The stator resistance is then derived using simple mathematical relationships between the resistance, stator current, feedback voltage and known counter EMF values.
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定子电阻的非侵入式系统。 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。 检测到没有定子电阻的反电动势，并且用于迫使定子绕组电压的反电动势部分符合期望值。 然后使用电阻，定子电流，反馈电压和已知的反电动势值之间的简单数学关系导出定子电阻。
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公开(公告)号：US5479081A
公开(公告)日：1995-12-26
申请号：US173329
申请日：1993-12-23
CPC分类号： H02P29/026 , H02P21/00 , H02P21/09 , H02P21/12
摘要： A motor controller for control of an AC motor which monitors the DC power provided to an inverter for synthesizing AC waveforms having the needed frequency and phase to power the motor. Information about variations in the DC power to the inverter are incorporated into the control strategy by adjusting a motor base frequency at which the motor moves from a constant torque to a constant horsepower mode of control. The change of control mode allows decrease in the field current, and hence a decrease in the required quadrature voltage while preserving the torque current. The torque current is ultimately limited by a user programmable direct voltage limit.
摘要翻译： 一种用于控制AC电动机的电动机控制器，其监视提供给逆变器的DC电力，以合成具有所需频率和相位的AC波形以为电动机供电。 关于逆变器的直流电力变化的信息通过调整电机从恒定转矩到恒定功率控制模式的电动机基准频率而被并入到控制策略中。 控制模式的改变允许减小励磁电流，从而降低所需的正交电压，同时保持转矩电流。 转矩电流最终受用户可编程直流电压限制。
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公开(公告)号：US20150153397A1
公开(公告)日：2015-06-04
申请号：US14095169
申请日：2013-12-03
申请人： Russel J. Kerkman , Ahmed Mohamed Sayed Ahmed , Brian J. Seibel , Shiv Gupta , Prathamesh Ramesh Vadhavkar
发明人： Russel J. Kerkman , Ahmed Mohamed Sayed Ahmed , Brian J. Seibel , Shiv Gupta , Prathamesh Ramesh Vadhavkar
CPC分类号： G01R27/02 , G01R31/028 , G01R31/42
摘要： Impedance detection methods and systems are presented for automatic computation of an electrical component impedance value at one or more specific frequencies of interest using quadrature voltage and current values generated by quadrature tracking filters based on sensed or measured voltage and current signals or values and a base frequency input.
摘要翻译： 提出了阻抗检测方法和系统，用于使用基于感测或测量的电压和电流信号或值的正交跟踪滤波器产生的正交电压和电流值自动计算感兴趣的一个或多个特定频率处的电气部件阻抗值， 输入。
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9.发明授权Phase-locked-loop with quadrature tracking filter for synchronizing an electric grid 有权具有用于同步电网的正交跟踪滤波器的锁相环公开(公告)号：US08704571B2
公开(公告)日：2014-04-22
申请号：US13468905
申请日：2012-05-10
IPC分类号： H03L7/06
CPC分类号： H03L7/00
摘要： Methods and systems for synchronizing an electric grid having unbalanced voltages are provided. A voltage vector may be filtered in a quadrature tracking filter (QTF) to generate a quadrature signal. A phase-locked-loop (PLL) operation may be performed on the quadrature signal to monitor a voltage vector between the grid and a connected power converter. The QTF and PLL methods are suitable for either single-phase applications or n-phase (any number of phases) applications. A frequency estimator estimates the grid frequency of the electric grid and outputs the estimated frequency to the QTF algorithms. The frequency estimator may include a three-phase phase-locked-loop (three-phase PLL) suitable for estimating the center frequencies of multiple phases of the electric grid. The frequency estimator may also include means for reducing the harmonics in the grid system.
摘要翻译： 提供了用于使具有不平衡电压的电网同步的方法和系统。 可以在正交跟踪滤波器（QTF）中对电压矢量进行滤波以产生正交信号。 可以在正交信号上执行锁相环（PLL）操作，以监视电网和连接的功率转换器之间的电压矢量。 QTF和PLL方法适用于单相应用或n相（任意数量级）应用。 频率估计器估计电网的电网频率，并将估计频率输出到QTF算法。 频率估计器可以包括适合于估计电网的多个相位的中心频率的三相锁相环（三相PLL）。 频率估计器还可以包括用于减少电网系统中的谐波的装置。
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公开(公告)号：US20110130993A1
公开(公告)日：2011-06-02
申请号：US12627400
申请日：2009-11-30
摘要： Methods and systems for tracking an electronic signal corresponding to an operating frequency of an electronic component are provided. A method may include sampling the signal to determine previous and current time samples of the signal. A frequency of interest in the signal may also be pre-warped to decrease adverse warping effects resulting from processing signals having relatively higher operating frequencies. The previous and current time samples of the signals, along with the pre-warped frequency of interest, may be input into a digital tracking filter. The digital tracking filter may be configured to execute one or more algorithms on the previous and current time samples and the pre-warped frequency of interest to estimate a current operating frequency.
摘要翻译： 提供了用于跟踪对应于电子部件的工作频率的电子信号的方法和系统。 方法可以包括对信号进行采样以确定信号的先前和当前时间采样。 信号中感兴趣的频率也可以被预先翘曲，以减少由具有相对更高的工作频率的信号产生的不利的翘曲效应。 信号的先前和当前时间样本以及感兴趣的预翘曲频率可以被输入到数字跟踪滤波器中。 数字跟踪滤波器可以被配置为对先前和当前时间采样和感兴趣的预翘曲频率执行一个或多个算法来估计当前工作频率。
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