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1. 发明申请

US20180237249A1 DYNAMIC PERFORMANCE AND ACTIVE DAMPING METHODS IN WEB WINDER TENSION CONTROL SYSTEMS 审中-公开
公开(公告)号：US20180237249A1
公开(公告)日：2018-08-23
申请号：US15435549
申请日：2017-02-17
申请人： Eaton Corporation , Zhejiang University
发明人： Huaqiang Li , Wenxi Yao , Fayi Chen , Zhengyu Lu
IPC分类号： B65H23/04
CPC分类号： B65H23/044 , B65H23/063 , B65H23/105 , B65H23/1806 , B65H23/195 , B65H2301/41466 , B65H2515/32 , B65H2557/264
摘要： A control system for controlling operation of main and secondary drive units in a web winder system to provide tension control of a continuous material web is disclosed. The control system causes the main drive unit to operate in a velocity mode to set a linear velocity of the continuous material web. The control system receives inputs from tension and speed detectors in the web winder system that detect a tension and speed of the continuous material web and causes the secondary drive unit to operate in a modified torque regulated closed-loop tension control mode so as to control a tension in the web material, with the control system causing the secondary drive unit to operate according to a torque regulated closed-loop tension control mode and integrate a speed feedback loop into the torque regulated closed-loop tension control mode so as to introduce active damping into the tension control.

2. 发明申请

US20170170753A1 SYSTEM AND METHOD FOR OPERATING A THREE-PHASE LOAD FROM A SINGLE PHASE SOURCE 有权
公开(公告)号：US20170170753A1
公开(公告)日：2017-06-15
申请号：US14969872
申请日：2015-12-15
申请人： Zhejiang University , Eaton Corporation
发明人： Huaqiang Li , Wenxi Yao , Zhengyu Lu
IPC分类号： H02P1/26 , H02P27/06
CPC分类号： H02P1/265 , H02M5/00 , H02P27/06
摘要： A power converter for operating a three-phase AC electrical machine from a single phase AC power source includes an ASD having a rectifier and inverter, and an add-on power conversion module external to the ASD that is electrically connected to each of the power source and the ASD. The power conversion module includes one or more input inductors configured to store and filter single-phase AC power received from the power source and a pair of switching devices connected to each of the input inductors at an output end thereof. A controller operably connected to the power conversion module selectively controls switching of the pair of switching devices associated with each of the one or more input inductors so as to cause a sinusoidal single phase AC power to be output from the add-on power conversion module for rectification by the rectifier.

3. 发明授权

US10377598B2 Dynamic performance and active damping methods in web winder tension control systems 有权
公开(公告)号：US10377598B2
公开(公告)日：2019-08-13
申请号：US15435549
申请日：2017-02-17
申请人： Eaton Corporation , Zhejiang University
发明人： Huaqiang Li , Wenxi Yao , Fayi Chen , Zhengyu Lu
IPC分类号： B65H23/04 , B65H23/06 , B65H23/10 , B65H23/18 , B65H23/195
摘要： A control system for controlling operation of main and secondary drive units in a web winder system to provide tension control of a continuous material web is disclosed. The control system causes the main drive unit to operate in a velocity mode to set a linear velocity of the continuous material web. The control system receives inputs from tension and speed detectors in the web winder system that detect a tension and speed of the continuous material web and causes the secondary drive unit to operate in a modified torque regulated closed-loop tension control mode so as to control a tension in the web material, with the control system causing the secondary drive unit to operate according to a torque regulated closed-loop tension control mode and integrate a speed feedback loop into the torque regulated closed-loop tension control mode so as to introduce active damping into the tension control.

4. 发明授权

US09667177B1 System and method for operating a three-phase load from a single phase source 有权
公开(公告)号：US09667177B1
公开(公告)日：2017-05-30
申请号：US14969872
申请日：2015-12-15
申请人： Eaton Corporation , Zhejiang University
发明人： Huaqiang Li , Wenxi Yao , Zhengyu Lu
IPC分类号： H02P1/26 , H02P27/06
CPC分类号： H02P1/265 , H02M5/00 , H02P27/06
摘要： A power converter for operating a three-phase AC electrical machine from a single phase AC power source includes an ASD having a rectifier and inverter, and an add-on power conversion module external to the ASD that is electrically connected to each of the power source and the ASD. The power conversion module includes one or more input inductors configured to store and filter single-phase AC power received from the power source and a pair of switching devices connected to each of the input inductors at an output end thereof. A controller operably connected to the power conversion module selectively controls switching of the pair of switching devices associated with each of the one or more input inductors so as to cause a sinusoidal single phase AC power to be output from the add-on power conversion module for rectification by the rectifier.

5. 发明授权

US09525377B2 System and method of rotor time constant online identification in an AC induction machine 有权
公开(公告)号：US09525377B2
公开(公告)日：2016-12-20
申请号：US14703554
申请日：2015-05-04
申请人： Eaton Corporation
发明人： Kai Wang , Wenxi Yao , Huaqiang Li , Zhengyu Lu
IPC分类号： H02P21/08
CPC分类号： H02P21/08 , H02P21/13 , H02P21/16
摘要： A system and method for determining a rotor time constant of an AC induction machine is disclosed. During operation of the induction motor, a flux signal is injected into a rotor flux command so as to generate a time-variant rotor flux. A voltage-current flux observer determines amplitudes of rotor flux variations resulting from the time-variant rotor flux, with the amplitudes of the rotor flux variations comprising an amplitude of a rotor flux variation based on a current model of the voltage-current flux observer and an amplitude of a rotor flux variation based on a combined voltage-current model of the voltage-current flux observer. A rotor time constant of the induction motor is then estimated based on the determined amplitudes of the rotor flux variations.

6. 发明申请

US20150002071A1 SYSTEM AND METHOD OF ROTOR TIME CONSTANT ONLINE IDENTIFICATION IN AN AC INDUCTION MACHINE 有权
标题翻译：转子时间的系统与方法在交流感应电机中的在线识别
公开(公告)号：US20150002071A1
公开(公告)日：2015-01-01
申请号：US13929914
申请日：2013-06-28
申请人： Eaton Corporation
发明人： Kai Wang , Wenxi Yao , Huaqiang Li , Zhengyu Lu
IPC分类号： H02P21/14
CPC分类号： H02P21/08 , H02P21/13 , H02P21/16
摘要： A system and method for determining a rotor time constant of an AC induction machine is disclosed. During operation of the induction motor, a flux signal is injected into a rotor flux command so as to generate a time-variant rotor flux. A voltage-current flux observer determines amplitudes of rotor flux variations resulting from the time-variant rotor flux, with the amplitudes of the rotor flux variations comprising an amplitude of a rotor flux variation based on a current model of the voltage-current flux observer and an amplitude of a rotor flux variation based on a combined voltage-current model of the voltage-current flux observer. A rotor time constant of the induction motor is then estimated based on the determined amplitudes of the rotor flux variations.
摘要翻译：公开了一种用于确定AC感应电机的转子时间常数的系统和方法。在感应电动机的操作期间，将磁通信号注入到转子磁通指令中，以产生时变转子磁通。电压 - 电流通量观测器确定由时变转子磁通产生的转子磁通变化的幅度，转子磁通量变化的幅度基于电压 - 电流通量观测器的当前模型，包括转子磁通量变化的幅度，以及基于电压 - 电流通量观测器的组合电压 - 电流模型的转子磁通量变化幅度。然后基于所确定的转子磁通变化的幅度来估计感应电动机的转子时间常数。

7. 发明申请

US20140167674A1 SYSTEM FOR DETERMINING A MAGNETIZING CURVE AND ROTOR RESISTANCE OF AN INDUCTION MACHINE AND METHOD OF MAKING SAME 有权
标题翻译：用于确定感应电机的磁化曲线和转子电阻的系统及其制造方法
公开(公告)号：US20140167674A1
公开(公告)日：2014-06-19
申请号：US13720668
申请日：2012-12-19
申请人： EATON CORPORATION
发明人： Kai Wang , Wenxi Yao , Huaqiang Li , Zhengyu Lu
IPC分类号： H02P23/14 , H05K13/00
CPC分类号： H02P23/14 , G01R31/34 , H02P21/16 , H05K13/00 , Y10T29/49004
摘要： A system for identifying magnetizing inductance and rotor resistance of an induction machine comprises an induction machine comprising a rotor and a stator, a DC voltage bus, and a DC-to-AC voltage inverter coupled to the DC voltage bus and to the induction machine. The system also comprises a controller configured to cause the DC-to-AC voltage inverter to apply a square-wave excitation to a plurality of phases of the induction machine, determine a stator resistance of the stator of the induction machine based on the square-wave excitation, and determine a rotor resistance of the rotor of the induction machine based on the square-wave excitation. The controller is also configured to calculate a magnetizing curve for the induction machine based on the stator and rotor resistances and control the induction machine to operate based on the magnetizing curve.
摘要翻译：用于识别感应电机的磁化电感和转子电阻的系统包括感应电机，其包括转子和定子，DC电压总线以及耦合到DC电压总线和感应电机的DC至AC电压逆变器。该系统还包括控制器，其被配置为使得直流到交流电压逆变器对感应电机的多个相位施加方波激励，基于平方英寸来确定感应电机的定子的定子电阻，基于方波激励确定感应电机转子的转子电阻。控制器还被配置为基于定子和转子电阻计算感应电机的磁化曲线，并且基于磁化曲线控制感应电机的操作。

8. 发明授权

US09024569B2 System and method of rotor time constant online identification in an AC induction machine 有权
标题翻译：交流感应电机的转子时间常数在线识别系统及方法
公开(公告)号：US09024569B2
公开(公告)日：2015-05-05
申请号：US13929914
申请日：2013-06-28
申请人： Eaton Corporation
发明人： Kai Wang , Wenxi Yao , Huaqiang Li , Zhengyu Lu
IPC分类号： H02P23/00 , H02P21/14
CPC分类号： H02P21/08 , H02P21/13 , H02P21/16
摘要： A system and method for determining a rotor time constant of an AC induction machine is disclosed. During operation of the induction motor, a flux signal is injected into a rotor flux command so as to generate a time-variant rotor flux. A voltage-current flux observer determines amplitudes of rotor flux variations resulting from the time-variant rotor flux, with the amplitudes of the rotor flux variations comprising an amplitude of a rotor flux variation based on a current model of the voltage-current flux observer and an amplitude of a rotor flux variation based on a combined voltage-current model of the voltage-current flux observer. A rotor time constant of the induction motor is then estimated based on the determined amplitudes of the rotor flux variations.
摘要翻译：公开了一种用于确定AC感应电机的转子时间常数的系统和方法。在感应电动机的操作期间，将磁通信号注入到转子磁通指令中，以产生时变转子磁通。电压 - 电流通量观测器确定由时变转子磁通产生的转子磁通变化的幅度，转子磁通量变化的幅度基于电压 - 电流通量观测器的当前模型，包括转子磁通量变化的幅度，以及基于电压 - 电流通量观测器的组合电压 - 电流模型的转子磁通量变化幅度。然后基于所确定的转子磁通变化的幅度来估计感应电动机的转子时间常数。

9. 发明申请

US20150236631A1 SYSTEM AND METHOD OF ROTOR TIME CONSTANT ONLINE IDENTIFICATION IN AN AC INDUCTION MACHINE 有权
公开(公告)号：US20150236631A1
公开(公告)日：2015-08-20
申请号：US14703554
申请日：2015-05-04
申请人： Eaton Corporation
发明人： Kai Wang , Wenxi Yao , Huaqiang Li , Zhengyu Lu
IPC分类号： H02P21/08
CPC分类号： H02P21/08 , H02P21/13 , H02P21/16
摘要： A system and method for determining a rotor time constant of an AC induction machine is disclosed. During operation of the induction motor, a flux signal is injected into a rotor flux command so as to generate a time-variant rotor flux. A voltage-current flux observer determines amplitudes of rotor flux variations resulting from the time-variant rotor flux, with the amplitudes of the rotor flux variations comprising an amplitude of a rotor flux variation based on a current model of the voltage-current flux observer and an amplitude of a rotor flux variation based on a combined voltage-current model of the voltage-current flux observer. A rotor time constant of the induction motor is then estimated based on the determined amplitudes of the rotor flux variations.

10. 发明授权

US08988035B2 System for determining a magnetizing curve and rotor resistance of an induction machine and method of making same 有权
标题翻译：用于确定感应电机的磁化曲线和转子电阻的系统及其制造方法
公开(公告)号：US08988035B2
公开(公告)日：2015-03-24
申请号：US13720668
申请日：2012-12-19
申请人： Eaton Corporation
发明人： Kai Wang , Wenxi Yao , Huaqiang Li , Zhengyu Lu
IPC分类号： H02P23/14 , H05K13/00 , H02P21/14 , G01R31/34
CPC分类号： H02P23/14 , G01R31/34 , H02P21/16 , H05K13/00 , Y10T29/49004
摘要： A system for identifying magnetizing inductance and rotor resistance of an induction machine comprises an induction machine comprising a rotor and a stator, a DC voltage bus, and a DC-to-AC voltage inverter coupled to the DC voltage bus and to the induction machine. The system also comprises a controller configured to cause the DC-to-AC voltage inverter to apply a square-wave excitation to a plurality of phases of the induction machine, determine a stator resistance of the stator of the induction machine based on the square-wave excitation, and determine a rotor resistance of the rotor of the induction machine based on the square-wave excitation. The controller is also configured to calculate a magnetizing curve for the induction machine based on the stator and rotor resistances and control the induction machine to operate based on the magnetizing curve.
摘要翻译：用于识别感应电机的磁化电感和转子电阻的系统包括感应电机，其包括转子和定子，DC电压总线以及耦合到DC电压总线和感应电机的DC至AC电压逆变器。该系统还包括控制器，其被配置为使得直流到交流电压逆变器对感应电机的多个相位施加方波激励，基于平方英寸来确定感应电机的定子的定子电阻，基于方波激励确定感应电机转子的转子电阻。控制器还被配置为基于定子和转子电阻计算感应电机的磁化曲线，并且基于磁化曲线控制感应电机的操作。

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