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公开(公告)号：US4670698A
公开(公告)日：1987-06-02
申请号：US557637
申请日：1983-12-02
CPC分类号： G01R31/343 , H02P21/09 , H02P21/16 , H02P2207/01
摘要： A method of measuring induction motor parameters so that the speed and torque control of an induction motor controller may be optimized. While the motor is stopped, a test signal made up of a current pulse of a known amplitude is applied to one or more windings of the motor stator for a selected period of time, after which the current pulse is turned off. After a short delay, the instanteous voltage across the stator windings is measured, and also an integration of the stator voltage is started which continues long enough so that the stator voltage decays to substantially zero. The measured voltage and integrated voltage are respectively proportional to the rotor resistance and the motor magnetizing inductance.
摘要翻译： 一种测量感应电动机参数的方法，以便可以优化感应电动机控制器的速度和转矩控制。 当电动机停止时，将由已知幅度的电流脉冲构成的测试信号施加到电动机定子的一个或多个绕组一段选定的时间段，之后电流脉冲被关断。 在短暂的延迟之后，测量定子绕组两端的瞬时电压，并且开始定子电压的积分，其持续足够长的时间，使得定子电压基本为零衰减。 测量电压和积分电压分别与转子电阻和电机励磁电感成正比。
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公开(公告)号：US4506321A
公开(公告)日：1985-03-19
申请号：US416357
申请日：1982-09-08
IPC分类号： B23Q15/20 , G05B19/23 , G05B19/416 , G05D3/12 , G05B13/00
CPC分类号： G05B19/232 , G05B19/416 , G05B2219/34215 , G05B2219/41419 , G05B2219/42237 , G05B2219/43034 , G05B2219/43093 , G05B2219/43097
摘要： A microprocessor-based motor control system operates the rapid advance motor on a slide transfer machine to carry out rapid traverse motions in minimal time. A velocity profile is stored during the acceleration portion of the move and this data is employed to determine when deceleration should begin and to control velocity during the deceleration portion of the move. A position feedback circuit having programmable resolution is employed to develop the velocity profile.
摘要翻译： 基于微处理器的电机控制系统在滑块传送机上操作快速前进电机，以在最短的时间内进行快速移动。 在移动的加速部分期间存储速度分布，并且该数据用于确定何时开始减速，并且在移动的减速部分期间控制速度。 采用具有可编程分辨率的位置反馈电路来开发速度分布。
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公开(公告)号：US4461987A
公开(公告)日：1984-07-24
申请号：US416356
申请日：1982-09-08
CPC分类号： H02M7/525
摘要： A current sensing circuit includes an impedance network having a capacitor which produces a voltage proportional to the steady-state component of current and an inductance which produces a voltage proportional to the transient component. The capacitor voltage modulates a carrier signal which conveys the steady-state component through an isolation transformer to a demodulator. The transient component is conveyed through a second isolation transformer and is summed with the demodulated steady-state component.
摘要翻译： 电流感测电路包括具有电容器的阻抗网络，该电容器产生与电流的稳态分量成比例的电压和产生与瞬态分量成比例的电压的电感。 电容器电压调制通过隔离变压器将稳态分量传送到解调器的载波信号。 瞬态分量通过第二隔离变压器传送，并与解调的稳态分量相加。
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公开(公告)号：US4455513A
公开(公告)日：1984-06-19
申请号：US401420
申请日：1982-07-26
CPC分类号： H02P6/00
摘要： A transducerless brushless permanent magnet motor in which a signal induced by the rotor in an unexcited winding is used to sense the rotor position. The sensed voltage, induced in the winding by the rotor, is integrated to provide a representation of the magnetic flux coupling the rotor and winding. Before start-up, both the rotor position and the integrator are initialized to align the circuit representation of the flux with the actual flux.In an additional embodiment of the invention, a self-initialization circuit is provided to automatically preset the rotor and flux integrator to pre-determined and corresponding values.
摘要翻译： 一种无转子无刷永磁电动机，其中使用由未转速绕组中的转子感应的信号来感测转子位置。 由转子在绕组中感应的感测电压被集成以提供耦合转子和绕组的磁通量的表示。 在启动之前，转子位置和积分器都被初始化，以将通量的电路表示与实际通量对齐。 在本发明的另外的实施例中，提供自初始化电路以将转子和磁通积分器自动预设为预定的和对应的值。
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公开(公告)号：US4868479A
公开(公告)日：1989-09-19
申请号：US81540
申请日：1987-08-04
申请人： Ahn Byong-Ho , Donald E. Fulton , Philip J. Gilinson, Jr. , David C. Whipple , William P. Curtiss
发明人： Ahn Byong-Ho , Donald E. Fulton , Philip J. Gilinson, Jr. , David C. Whipple , William P. Curtiss
CPC分类号： G01C19/08 , H02K29/12 , H02P25/024
摘要： A back EMF controlled, synchronous, permanent magnet motor capable of extremely high rotation speeds at high efficiency. The motor includes a permanent magnet flux source and excitation coils for producing a rotating magnetic field mounted on an iron free form to substantially eliminate core loss and resulting rotor drag. Back EMF is determined directly from the excitation and controls the excitation to produce a torque angle of substantially 90.degree. between the magnet and coil fluxes. Coil excitation is used at maximum efficiency and hunting is avoided. The permanent magnet provides a high flux density that also allows a low current in the motor coils and thus reduces coil copper losses to further improve efficiency.
摘要翻译： 一种反电动势控制的同步永磁电动机，能够以高效率实现极高的转速。 电动机包括用于产生安装在无铁形式上的旋转磁场的永磁通量源和励磁线圈，以基本上消除铁损和产生的转子阻力。 反向EMF直接由励磁确定，并控制励磁，从而在磁体和线圈通量之间产生大致90°的转矩角。 以最大效率使用线圈激励，避免了狩猎。 永磁体提供高磁通密度，其也允许电动机线圈中的低电流，从而减少线圈铜损耗以进一步提高效率。
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公开(公告)号：US4417194A
公开(公告)日：1983-11-22
申请号：US188306
申请日：1980-09-18
CPC分类号： H02P9/46 , H02J3/1835 , Y02E40/30 , Y10T307/718
摘要： An electric power generator system including a switched capacitor controlled induction generator adapted to provide power at a regulated voltage and frequency. The system is adapted for autonomous operation for delivery of power with unity power factor to an external power grid.
摘要翻译： 一种发电机系统，其包括适于以稳定的电压和频率提供功率的开关电容器控制的感应发电机。 该系统适用于以一体功率因数传递给外部电网的自主运行。
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公开(公告)号：US4275343A
公开(公告)日：1981-06-23
申请号：US973860
申请日：1978-12-28
CPC分类号： H02P25/024
摘要： A back EMF controlled, synchronous, permanent magnet motor capable of extremely high rotation speeds at high efficiency. The motor includes a permanent magnet flux source and excitation coils for producing a rotating magnetic field mounted on an iron free form to substantially eliminate core loss and resulting rotor drag. Back EMF is determined directly from the excitation and controls the excitation to produce a torque angle of substantially 90.degree. between the magnet and coil fluxes. Coil excitation is used at maximum efficiency and hunting is avoided. The permanent magnet provides a high flux density that also allows a low current in the motor coils and thus reduces coil copper losses to further improve efficiency.
摘要翻译： 一种反电动势控制的同步永磁电动机，能够以高效率实现极高的转速。 电动机包括用于产生安装在无铁形式上的旋转磁场的永磁通量源和励磁线圈，以基本上消除铁损和产生的转子阻力。 反向EMF直接由励磁确定，并控制励磁，从而在磁体和线圈通量之间产生大致90°的转矩角。 以最大效率使用线圈激励，避免了狩猎。 永磁体提供高磁通密度，其也允许电动机线圈中的低电流，从而减少线圈铜损耗以进一步提高效率。
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公开(公告)号：US4348627A
公开(公告)日：1982-09-07
申请号：US133414
申请日：1980-03-24
申请人： Donald E. Fulton
发明人： Donald E. Fulton
CPC分类号： H02P23/08
摘要： A control system for an induction machine. The system includes a multiphase variable frequency oscillator adapted to provide at least one pair of signals having frequencies proportional to the sum of a desired slip frequency and the frequency of rotation of the induction motor shaft, where the signals are in phase quadrature. A weighting network amplitude-scales one of each pair of signals by a factor related to the desired slip frequency. A summing network then generates an excitation signal for each stator winding by summing the amplitude-scaled signal and its associated quadrature signal corresponding to that stator winding.
摘要翻译： 感应电机的控制系统。 该系统包括多相可变频率振荡器，其适于提供至少一对信号，该对信号具有与期望的转差频率和感应电动机轴的旋转频率之和成正比的信号，其中信号是相位正交的。 加权网络通过与期望的转差频率相关的因子对每对信号中的一个进行振幅。 然后，求和网络通过对与该定子绕组相对应的幅度标度信号及其相关联的正交信号求和来为每个定子绕组产生激励信号。
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公开(公告)号：US4620272A
公开(公告)日：1986-10-28
申请号：US646411
申请日：1984-08-31
CPC分类号： H02H7/1227 , H02P23/06
摘要： An AC motor drive includes a power converter which supplies current to a DC bus from three-phase power lines. An inverter drives the motor from power delivered to the DC bus and it regenerates power to the DC bus when the motor is decelerated. The power converter in turn regenerates the power to the power lines by controlling line current such that it is substantially in-phase with the applied line voltages. Current overload protection is provided for the transistor switches employed in the power converter bridge circuit.
摘要翻译： AC电动机驱动器包括从三相电力线向DC总线供电的电力转换器。 逆变器驱动电机从输送到直流总线的电力，并且当电动机减速时，其再生电力到直流总线。 功率转换器又通过控制线电流使其与所施加的线路电压基本上同相而再生电力线路的功率。 为功率转换器桥式电路中使用的晶体管开关提供电流过载保护。
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公开(公告)号：US4484126A
公开(公告)日：1984-11-20
申请号：US415682
申请日：1982-09-07
CPC分类号： H02P23/0077 , H02P21/09
摘要： The present invention generates a motor slip frequency value and two current magnitude values representing quadrature components of the motor stator current to be generated. Closed-loop control of the motor operation is provided by feeding back a signal representative of the motor shaft speed or position calculate the torque required from the motor. The feedback signal is separated into high and low frequency components. Additional circuitry changes the value in response to detected variations in the high frequency components of the feedback signal. The addition of this circuitry causes the motor control circuit to no longer represent the inverse of the motor transfer function network.
摘要翻译： 本发明产生电动机转差频率值和表示要产生的电动机定子电流的正交分量的两个电流幅度值。 通过反馈代表电机轴速度或位置的信号来计算电机所需的扭矩，来提供电机运行的闭环控制。 反馈信号分为高频和低频分量。 响应于反馈信号的高频分量中检测到的变化，附加电路改变该值。 该电路的添加使电动机控制电路不再代表电动机传递功能网络的倒数。
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