SYSTEM AND METHOD FOR MONITORING AND CONTROLLING STATOR WINDING TEMPERATURE IN A DE-ENERGIZED AC MOTOR
    11.
    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

    IPC分类号: H02P29/02 H02H7/08

    CPC分类号: H02P23/14 H02P29/64

    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。

    METHOD AND APPARATUS FOR ENHANCING ARC FAULT SIGNAL FOR DETECTION IN PHOTOVOLTAIC SYSTEM
    15.
    发明申请
    METHOD AND APPARATUS FOR ENHANCING ARC FAULT SIGNAL FOR DETECTION IN PHOTOVOLTAIC SYSTEM 有权
    用于增强光伏故障信号的方法和装置,用于光伏系统中的检测

    公开(公告)号:US20140055900A1

    公开(公告)日:2014-02-27

    申请号:US13595018

    申请日:2012-08-27

    IPC分类号: H02H3/50

    摘要: A photovoltaic (PV) system includes a string of at least one PV module, and an arc fault detector (AFD) electrically coupled to the string. The AFD is configured to detect a non-DC electrical current that occurs within the string, and cause electrical contacts within the PV system to open as a result of the detected non-DC electrical current. The system includes a capacitor electrically coupled to the string and to the AFD such that the non-DC electrical current passes through the AFD and the capacitor.

    摘要翻译: 光伏(PV)系统包括至少一个PV模块串和电耦合到该串的电弧故障检测器(AFD)。 AFD被配置为检测在串中发生的非直流电流,并且由于检测到的非直流电流而导致PV系统内的电触点断开。 该系统包括电耦合到串和AFD的电容器,使得非直流电流通过AFD和电容器。

    System and method for monitoring and controlling stator winding temperature in a de-energized AC motor
    16.
    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

    IPC分类号: H02P1/26 H02P23/14 H02K11/00

    CPC分类号: H02P23/14 H02P29/64

    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。

    METHOD AND APPARATUS FOR DETECTING A LOOSE ELECTRICAL CONNECTION IN PHOTOVOLTAIC SYSTEM
    17.
    发明申请
    METHOD AND APPARATUS FOR DETECTING A LOOSE ELECTRICAL CONNECTION IN PHOTOVOLTAIC SYSTEM 有权
    用于检测光伏系统中松动电气连接的方法和装置

    公开(公告)号:US20140070833A1

    公开(公告)日:2014-03-13

    申请号:US13609529

    申请日:2012-09-11

    IPC分类号: G01R31/302 H01R43/00

    摘要: A power circuit configured to generate and distribute DC electrical power, the power circuit includes a photovoltaic (PV) system that includes an array of PV modules electrically coupled to a combiner box, and an inverter positioned to receive DC electrical power from the array of PV modules and output AC electrical power. The PV system also includes a signal generator coupled to a first portion of the PV system, and a signal detector coupled to a second portion of the PV system, the signal detector configured to detect secondary signals generated at a loose connection of an electrical joint in the PV system, wherein the secondary signals result from a signal generated by the signal generator.

    摘要翻译: 一种被配置为产生和分配直流电力的电力电路,所述电源电路包括光伏(PV)系统,其包括电耦合到组合器箱的PV模块阵列,以及定位成从所述PV阵列接收DC电力的逆变器 模块和输出交流电源。 PV系统还包括耦合到PV系统的第一部分的信号发生器和耦合到PV系统的第二部分的信号检测器,信号检测器被配置为检测在电接头的松动连接处产生的二次信号 PV系统,其中辅助信号由信号发生器产生的信号产生。

    System and method of dynamic regulation of real power to a load
    18.
    发明授权
    System and method of dynamic regulation of real power to a load 有权
    对负载的实际功率进行动态调节的系统和方法

    公开(公告)号:US08232760B2

    公开(公告)日:2012-07-31

    申请号:US12541320

    申请日:2009-08-14

    IPC分类号: H02P27/00 H02P27/04

    摘要: A system and method for controlling an AC motor drive includes a control system programmed with an energy algorithm configured to optimize operation of the motor drive. Specifically, the control system input an initial voltage-frequency command to the AC motor drive based on an initial voltage/frequency (V/Hz) curve, receives a real-time output of the AC motor drive generated according to the initial voltage-frequency command, and feedback a plurality of modified voltage-frequency commands to the AC motor drive, each of the plurality of modified voltage-frequency commands comprising a deviation from the initial V/Hz curve. The control system also determines a real-time value of the motor parameter corresponding to each of the plurality of modified voltage-frequency commands, and feeds back a modified voltage-frequency command to the AC motor drive so that the real-time value of the motor parameter is within a motor parameter tolerance range.

    摘要翻译: 用于控制AC电动机驱动器的系统和方法包括用能够优化电动机驱动器的操作的能量算法编程的控制系统。 具体地说,控制系统基于初始电压/频率(V / Hz)曲线向AC电动机驱动器输入初始电压 - 频率指令,接收根据初始电压 - 频率产生的交流电动机驱动的实时输出 命令,并且向AC电动机驱动器反馈多个修改的电压 - 频率命令,所述多个修改的电压 - 频率指令中的每一个包括与初始V / Hz曲线的偏差。 控制系统还确定与多个修改的电压 - 频率指令中的每一个相对应的电动机参数的实时值,并将修改的电压 - 频率命令反馈给AC电动机驱动器,使得实时值 电机参数在电机参数公差范围内。

    SYSTEM AND METHOD OF DYNAMIC REGULATION OF REAL POWER TO A LOAD
    19.
    发明申请
    SYSTEM AND METHOD OF DYNAMIC REGULATION OF REAL POWER TO A LOAD 有权
    动力调节到负载的系统和方法

    公开(公告)号:US20100315034A1

    公开(公告)日:2010-12-16

    申请号:US12541320

    申请日:2009-08-14

    IPC分类号: H02P27/04

    摘要: A system and method for controlling an AC motor drive includes a control system programmed with an energy algorithm configured to optimize operation of the motor drive. Specifically, the control system input an initial voltage-frequency command to the AC motor drive based on an initial voltage/frequency (V/Hz) curve, receives a real-time output of the AC motor drive generated according to the initial voltage-frequency command, and feedback a plurality of modified voltage-frequency commands to the AC motor drive, each of the plurality of modified voltage-frequency commands comprising a deviation from the initial V/Hz curve. The control system also determines a real-time value of the motor parameter corresponding to each of the plurality of modified voltage-frequency commands, and feeds back a modified voltage-frequency command to the AC motor drive so that the real-time value of the motor parameter is within a motor parameter tolerance range.

    摘要翻译: 用于控制AC电动机驱动器的系统和方法包括用能够优化电动机驱动器的操作的能量算法编程的控制系统。 具体地说,控制系统基于初始电压/频率(V / Hz)曲线向AC电动机驱动器输入初始电压 - 频率指令,接收根据初始电压 - 频率产生的交流电动机驱动的实时输出 命令,并且向AC电动机驱动器反馈多个修改的电压 - 频率命令,所述多个修改的电压 - 频率指令中的每一个包括与初始V / Hz曲线的偏差。 控制系统还确定与多个修改的电压 - 频率指令中的每一个相对应的电动机参数的实时值,并将修改的电压 - 频率命令反馈给AC电动机驱动器,使得实时值 电机参数在电机参数公差范围内。

    SYSTEM AND METHOD OF DYNAMIC REGULATION OF REAL POWER TO A LOAD
    20.
    发明申请
    SYSTEM AND METHOD OF DYNAMIC REGULATION OF REAL POWER TO A LOAD 有权
    动力调节到负载的系统和方法

    公开(公告)号:US20100315033A1

    公开(公告)日:2010-12-16

    申请号:US12619874

    申请日:2009-11-17

    IPC分类号: H02P23/04 H02P23/00

    摘要: A system and method for controlling an AC motor drive includes a control system programmed with an energy algorithm configured to optimize operation of the motor drive. Specifically, the control system receives input of an initial voltage-frequency command to the AC motor drive, receives a real-time output of the AC motor drive generated according to the initial voltage-frequency command, and determines a real-time value of a motor parameter based on the real-time output of the AC motor drive. The control system also inputs a plurality of modified voltage-frequency commands to the AC motor drive, determines the real-time value of the motor parameter corresponding to each of the plurality of modified voltage-frequency commands, and identifies an optimal value of the motor parameter based on the real-time values of the motor parameter. The control system maintains an input of a current modified voltage-frequency command when the real-time value of the motor parameter corresponds to the optimal value of the motor parameter.

    摘要翻译: 用于控制AC电动机驱动器的系统和方法包括用能够优化电动机驱动器的操作的能量算法编程的控制系统。 具体地说,控制系统接收对AC电动机驱动器的初始电压 - 频率指令的输入,接收根据初始电压 - 频率指令产生的AC电动机驱动的实时输出,并且确定a 电机参数基于交流电机驱动的实时输出。 控制系统还向AC电动机驱动器输入多个修正的电压频率指令,确定与多个修改的电压 - 频率指令中的每一个相对应的电动机参数的实时值,并且识别电动机的最佳值 参数基于电机参数的实时值。 当电动机参数的实时值对应于电动机参数的最佳值时,控制系统保持当前修改的电压 - 频率指令的输入。