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1.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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2.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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公开(公告)号：US08405339B2
公开(公告)日：2013-03-26
申请号：US12829205
申请日：2010-07-01
申请人： Pinjia Zhang , Bin Lu , Thomas G. Habetler
发明人： Pinjia Zhang , Bin Lu , Thomas G. Habetler
IPC分类号： G01R31/02
CPC分类号： G01R31/343
摘要： A system and method for detecting a rotor fault condition in an AC induction machine is disclosed. The system includes a processor programmed to receive voltage and current data from an AC induction machine, generate a current frequency spectrum from the current data, and identify rotor-fault related harmonics in the current frequency spectrum. The processor is also programmed to calculate a fault severity indicator using the voltage and current data, identified rotor-fault related harmonics, and motor specifications, analyze the fault severity indicator to determine a possibility of rotor fault. The processor generates an alert based on the possibility of rotor fault.
摘要翻译： 公开了一种用于检测交流感应电机中的转子故障状况的系统和方法。 该系统包括被编程为从AC感应电机接收电压和电流数据的处理器，从当前数据生成当前频谱，并识别当前频谱中的转子故障相关谐波。 处理器还可编程为使用电压和电流数据，确定的转子故障相关谐波和电机规格来计算故障严重度指标，分析故障严重度指标以确定转子故障的可能性。 处理器根据转子故障的可能性产生警报。
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4.发明申请SYSTEM AND METHOD FOR DETERMINING STATOR WINDING RESISTANCE IN AN AC MOTOR USING MOTOR DRIVES 有权使用电机驱动的交流电机中确定定子绕组电阻的系统和方法公开(公告)号：US20100194329A1
公开(公告)日：2010-08-05
申请号：US12363413
申请日：2009-01-30
申请人： Bin Lu , Thomas G. Habetler , Pinjia Zhang
发明人： Bin Lu , Thomas G. Habetler , Pinjia Zhang
CPC分类号： H02P21/141 , H02P21/16
摘要： A system and method for determining the stator winding resistance of AC motors is provided. The system includes an AC motor drive having an input connectable to an AC source and an output connectable to an input terminal of an AC motor, a pulse width modulation (PWM) converter having switches therein to control current flow and terminal voltages in the AC motor, and a control system connected to the PWM converter. The control system generates a command signal to cause the PWM converter to control an output of the AC motor drive corresponding to an input to the AC motor, selectively generates a modified command signal to cause the PWM converter to inject a DC signal into the output of the AC motor drive, and determines a stator winding resistance of the AC motor based on the DC signal of at least one of the voltage and current.
摘要翻译： 提供了一种用于确定交流电动机的定子绕组电阻的系统和方法。 该系统包括具有可连接到AC电源的输入端的AC电动机驱动器和可连接到AC电动机的输入端子的输出端，其中具有开关的脉宽调制（PWM）转换器，用于控制AC电动机中的电流和端电压 以及连接到PWM转换器的控制系统。 控制系统产生一个命令信号，使PWM转换器控制对应于AC电动机输入的交流电动机驱动的输出，选择性地产生修改的指令信号，使PWM转换器将DC信号注入到 AC电动机驱动器，并且基于电压和电流中的至少一个的DC信号来确定AC电动机的定子绕组电阻。
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5.发明申请公开(公告)号：US20090051311A1
公开(公告)日：2009-02-26
申请号：US12132484
申请日：2008-06-03
申请人： Bin Lu , Thomas G. Habetler , Pinjia Zhang , Peter J. Theisen
发明人： Bin Lu , Thomas G. Habetler , Pinjia Zhang , Peter J. Theisen
CPC分类号： H02P23/14 , G01R31/343
摘要： A system and method for determining stator winding resistance in an AC motor is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of an AC motor. The circuit includes at least one contactor and at least one switch to control current flow and terminal voltages in the AC motor. The system also includes a controller connected to the circuit and configured to modify a switching time of the at least one switch to create a DC component in an output of the system corresponding to an input to the AC motor and determine a stator winding resistance of the AC motor based on the injected DC component of the voltage and current.
摘要翻译： 公开了一种用于确定AC电动机中的定子绕组电阻的系统和方法。 该系统包括具有可连接到AC电源的输入端和可连接到AC电动机的输入端子的输出的电路。 该电路包括至少一个接触器和用于控制AC电动机中的电流和端电压的至少一个开关。 该系统还包括连接到电路的控制器，其被配置为修改至少一个开关的切换时间，以在对应于AC电动机的输入的系统的输出中产生DC分量，并确定定子绕组电阻 交流电机基于注入的直流分量的电压和电流。
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6.发明授权System and method for determining stator winding resistance in an AC motor using motor drives 有权使用电机驱动器确定交流电动机中的定子绕组电阻的系统和方法公开(公告)号：US08384338B2
公开(公告)日：2013-02-26
申请号：US12363413
申请日：2009-01-30
申请人： Bin Lu , Thomas G. Habetler , Pinjia Zhang
发明人： Bin Lu , Thomas G. Habetler , Pinjia Zhang
IPC分类号： H02P23/00
CPC分类号： H02P21/141 , H02P21/16
摘要： A system and method for determining the stator winding resistance of AC motors is provided. The system includes an AC motor drive having an input connectable to an AC source and an output connectable to an input terminal of an AC motor, a pulse width modulation (PWM) converter having switches therein to control current flow and terminal voltages in the AC motor, and a control system connected to the PWM converter. The control system generates a command signal to cause the PWM converter to control an output of the AC motor drive corresponding to an input to the AC motor, selectively generates a modified command signal to cause the PWM converter to inject a DC signal into the output of the AC motor drive, and determines a stator winding resistance of the AC motor based on the DC signal of at least one of the voltage and current.
摘要翻译： 提供了一种用于确定交流电动机的定子绕组电阻的系统和方法。 该系统包括具有可连接到AC电源的输入端的AC电动机驱动器和可连接到AC电动机的输入端子的输出端，其中具有开关的脉宽调制（PWM）转换器，用于控制AC电动机中的电流和端电压 以及连接到PWM转换器的控制系统。 控制系统产生一个命令信号，使PWM转换器控制对应于AC电动机输入的交流电动机驱动的输出，选择性地产生修改的指令信号，使PWM转换器将DC信号注入到 AC电动机驱动器，并且基于电压和电流中的至少一个的DC信号来确定AC电动机的定子绕组电阻。
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公开(公告)号：US20120001580A1
公开(公告)日：2012-01-05
申请号：US12829205
申请日：2010-07-01
申请人： Pinjia Zhang , Bin Lu , Thomas G. Habetler
发明人： Pinjia Zhang , Bin Lu , Thomas G. Habetler
IPC分类号： G01R31/02
CPC分类号： G01R31/343
摘要： A system and method for detecting a rotor fault condition in an AC induction machine is disclosed. The system includes a processor programmed to receive voltage and current data from an AC induction machine, generate a current frequency spectrum from the current data, and identify rotor-fault related harmonics in the current frequency spectrum. The processor is also programmed to calculate a fault severity indicator using the voltage and current data, identified rotor-fault related harmonics, and motor specifications, analyze the fault severity indicator to determine a possibility of rotor fault. The processor generates an alert based on the possibility of rotor fault.
摘要翻译： 公开了一种用于检测交流感应电机中的转子故障状况的系统和方法。 该系统包括被编程为从AC感应电机接收电压和电流数据的处理器，从当前数据生成当前频谱，并识别当前频谱中的转子故障相关谐波。 处理器还可编程为使用电压和电流数据，确定的转子故障相关谐波和电机规格来计算故障严重度指标，分析故障严重度指标以确定转子故障的可能性。 处理器根据转子故障的可能性产生警报。
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8.发明授权System and method for determining stator winding resistance in an AC motor 有权用于确定交流电动机中的定子绕组电阻的系统和方法公开(公告)号：US07952318B2
公开(公告)日：2011-05-31
申请号：US12132484
申请日：2008-06-03
申请人： Bin Lu , Thomas G. Habetler , Pinjia Zhang , Peter J. Theisen
发明人： Bin Lu , Thomas G. Habetler , Pinjia Zhang , Peter J. Theisen
CPC分类号： H02P23/14 , G01R31/343
摘要： A system and method for determining stator winding resistance in an AC motor is disclosed. The system includes a circuit having an input connectable to an AC source and an output connectable to an input terminal of an AC motor. The circuit includes at least one contactor and at least one switch to control current flow and terminal voltages in the AC motor. The system also includes a controller connected to the circuit and configured to modify a switching time of the at least one switch to create a DC component in an output of the system corresponding to an input to the AC motor and determine a stator winding resistance of the AC motor based on the injected DC component of the voltage and current.
摘要翻译： 公开了一种用于确定AC电动机中定子绕组电阻的系统和方法。 该系统包括具有可连接到AC电源的输入端和可连接到AC电动机的输入端子的输出的电路。 该电路包括至少一个接触器和用于控制AC电动机中的电流和端电压的至少一个开关。 该系统还包括连接到电路的控制器，其被配置为修改至少一个开关的切换时间，以在对应于AC电动机的输入的系统的输出中产生DC分量，并确定定子绕组电阻 交流电机基于注入的直流分量的电压和电流。
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9.发明授权System and method to determine electric motor efficiency using an equivalent circuit 有权使用等效电路确定电动机效率的系统和方法公开(公告)号：US09170303B2
公开(公告)日：2015-10-27
申请号：US13088846
申请日：2011-04-18
申请人： Bin Lu , Thomas G. Habetler
发明人： Bin Lu , Thomas G. Habetler
CPC分类号： G01R31/343 , H02P23/14
摘要： A system and method for determining electric motor efficiency includes a monitoring system having a processor programmed to determine efficiency of an electric motor under load while the electric motor is online. The determination of motor efficiency is independent of a rotor speed measurement. Further, the efficiency is based on a determination of stator winding resistance, an input voltage, and an input current. The determination of the stator winding resistance occurs while the electric motor under load is online.
摘要翻译： 用于确定电动机效率的系统和方法包括监视系统，其具有被编程为在电动机在线时确定负载下的电动机的效率的处理器。 电机效率的确定与转子速度测量无关。 此外，效率基于定子绕组电阻，输入电压和输入电流的确定。 定子绕组电阻的确定发生在负载下的电动机在线时。
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公开(公告)号：US08010318B2
公开(公告)日：2011-08-30
申请号：US12132151
申请日：2008-06-03
申请人： Bin Lu , Thomas G. Habetler , Ronald G. Harley
发明人： Bin Lu , Thomas G. Habetler , Ronald G. Harley
CPC分类号： G01R31/343 , H02P23/14
摘要： A system and method for nonintrusively determining electric motor efficiency includes a processor programed to, while the motor is in operation, determine a plurality of stator input currents, electrical input data, a rotor speed, a value of stator resistance, and an efficiency of the motor based on the determined rotor speed, the value of stator resistance, the plurality of stator input currents, and the electrical input data. The determination of the rotor speed is based on one of the input power and the plurality of stator input currents. The determination of the value of the stator resistance is based on at least one of a horsepower rating and a combination of the plurality of stator input currents and the electrical input data. The electrical input data includes at least one of an input power and a plurality of stator input voltages.
摘要翻译： 用于非侵入性地确定电动机效率的系统和方法包括：处理器，被编程为在电动机运行时，确定多个定子输入电流，电输入数据，转子速度，定子电阻值，以及 电机基于确定的转子速度，定子电阻值，多个定子输入电流和电气输入数据。 转子速度的确定基于输入功率和多个定子输入电流之一。 定子电阻的值的确定基于马力额定值和多个定子输入电流和电输入数据的组合中的至少一个。 电输入数据包括输入功率和多个定子输入电压中的至少一个。
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