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1.发明授权Method and compensation modulator for dynamically controlling induction machine regenerating energy flow and direct current bus voltage for an adjustable frequency drive system 有权用于动态控制感应电机再生能量流和用于变频驱动系统的直流总线电压的方法和补偿调制器公开(公告)号：US06768284B2
公开(公告)日：2004-07-27
申请号：US10260917
申请日：2002-09-30
申请人： Kevin Lee , Scott K. Becker , Kevin J. Schmidt
发明人： Kevin Lee , Scott K. Becker , Kevin J. Schmidt
IPC分类号： H02D540
摘要： A method for dynamically controlling regenerating energy flow and direct current bus voltage for an adjustable frequency drive system includes sensing a direct current voltage of a direct current bus; and sensing a plurality of alternating currents at outputs of an inverter. The sensed alternating currents are transformed to a stationary current vector. Voltage and frequency values are converted to a stationary voltage vector and an angle. The angle and the stationary current vector are transformed to a rotating current vector including torque and flux producing current components. An induction machine generating mode is determined when the torque producing current component reverses polarity. The voltage and frequency values limit the direct current voltage of the direct current bus at a predetermined threshold responsive to the generating mode. The stationary voltage vector and the angle are converted to pulse width modulated control inputs of the inverter.
摘要翻译： 用于动态地控制可变频驱动系统的再生能量流和直流母线电压的方法包括感测直流母线的直流电压; 并且在逆变器的输出处感测多个交流电流。 所感测的交流电流被转换成固定的电流矢量。 电压和频率值被转换成一个固定的电压矢量和一个角度。 将角度和固定电流矢量转换成包括产生电流分量的转矩和磁通的旋转电流矢量。 当转矩产生电流分量反转极性时，确定感应电机产生模式。 响应于生成模式，电压和频率值将直流总线的直流电压限制在预定阈值。 将稳定电压矢量和角度转换为变频器的脉宽调制控制输入。
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2.发明申请SYSTEM AND METHOD FOR MONITORING AND CONTROLLING STATOR WINDING TEMPERATURE IN A DE-ENERGIZED AC MOTOR 有权用于监控和控制无能源交流电机中定子绕组温度的系统和方法公开(公告)号：US20100156338A1
公开(公告)日：2010-06-24
申请号：US12341044
申请日：2008-12-22
摘要： A system and method for measuring and controlling stator winding temperature in an AC motor while idling is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of a multi-phase AC motor. The circuit further includes a plurality of switching devices to control current flow and terminal voltages in the multi-phase AC motor and a controller connected to the circuit. The controller is configured to activate the plurality of switching devices to create a DC signal in an output of the motor control device corresponding to an input to the multi-phase AC motor, determine or estimate a stator winding resistance of the multi-phase AC motor based on the DC signal, and estimate a stator temperature from the stator winding resistance. Temperature can then be controlled and regulated by DC injection into the stator windings.
摘要翻译： 公开了一种用于在空转时测量和控制交流电动机中的定子绕组温度的系统和方法。 该系统包括具有可连接到AC源的输入和可连接到多相AC电动机的输入端的输出的电路。 电路还包括多个开关装置，用于控制多相AC电动机中的电流和端电压，以及连接到电路的控制器。 控制器被配置为激活多个开关装置，以在对应于多相交流电动机的输入的电动机控制装置的输出中产生直流信号，确定或估计多相交流电动机的定子绕组电阻 基于直流信号，并从定子绕组电阻估计定子温度。 然后可以通过直流注入到定子绕组中来控制和调节温度。
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3.发明授权System and method for monitoring and controlling stator winding temperature in a de-energized AC motor 有权断电交流电机中定子绕组温度的监测与控制系统及方法公开(公告)号：US08084984B2
公开(公告)日：2011-12-27
申请号：US12341044
申请日：2008-12-22
摘要： A system and method for measuring and controlling stator winding temperature in an AC motor while idling is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of a multi-phase AC motor. The circuit further includes a plurality of switching devices to control current flow and terminal voltages in the multi-phase AC motor and a controller connected to the circuit. The controller is configured to activate the plurality of switching devices to create a DC signal in an output of the motor control device corresponding to an input to the multi-phase AC motor, determine or estimate a stator winding resistance of the multi-phase AC motor based on the DC signal, and estimate a stator temperature from the stator winding resistance. Temperature can then be controlled and regulated by DC injection into the stator windings.
摘要翻译： 公开了一种用于在空转时测量和控制交流电动机中的定子绕组温度的系统和方法。 该系统包括具有可连接到AC源的输入和可连接到多相AC电动机的输入端的输出的电路。 电路还包括多个开关装置，用于控制多相AC电动机中的电流和端电压，以及连接到电路的控制器。 控制器被配置为激活多个开关装置，以在对应于多相交流电动机的输入的电动机控制装置的输出中产生直流信号，确定或估计多相交流电动机的定子绕组电阻 基于直流信号，并从定子绕组电阻估计定子温度。 然后可以通过直流注入到定子绕组中来控制和调节温度。
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