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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：US5717305A
公开(公告)日：1998-02-10
申请号：US673657
申请日：1996-06-28
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。
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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：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：US5965995A
公开(公告)日：1999-10-12
申请号：US933214
申请日：1997-09-18
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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公开(公告)号：US5298847A
公开(公告)日：1994-03-29
申请号：US875912
申请日：1992-04-29
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。
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公开(公告)号：US4706012A
公开(公告)日：1987-11-10
申请号：US863015
申请日：1986-05-14
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。
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公开(公告)号：US4680695A
公开(公告)日：1987-07-14
申请号：US922775
申请日：1986-10-27
CPC分类号： H02M7/48
摘要： A current regulator for a variable frequency power supply includes a proportional plus integral circuit that produces a composite control output signal for each phase. To improve the performance of the current regulator at higher frequencies, the composite control output signal for each phase also inlcudes a cross coupled component which is produced by multiplying a d.c. signal proportional to frequency times an integrator output signal from another phase. The composite control signals are applied to a voltage source inverter which produces the output currents to a load.
摘要翻译： 用于可变频率电源的电流调节器包括比例积分电路，其产生用于每个相位的复合控制输出信号。 为了提高电流调节器在较高频率下的性能，每相的复合控制输出信号还包括一个交叉耦合分量，该交叉耦合分量是通过将直流 与频率成比例的信号乘以来自另一相的积分器输出信号。 复合控制信号被施加到产生到负载的输出电流的电压源逆变器。
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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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10.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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