ACTIVE DIAGNOSTICS AND GROUND FAULT DETECTION ON PHOTOVOLTAIC STRINGS
    21.
    发明申请
    ACTIVE DIAGNOSTICS AND GROUND FAULT DETECTION ON PHOTOVOLTAIC STRINGS 有权
    有效的诊断和光伏故障检测

    公开(公告)号:US20140070815A1

    公开(公告)日:2014-03-13

    申请号:US13607932

    申请日:2012-09-10

    IPC分类号: G01R31/14

    摘要: A PV system includes a plurality of PV strings configured to generate a string output power responsive to received solar irradiation, with a source conductor and a return conductor being provided from the PV strings. One or more DC voltage regulators are electrically connected to the PV strings on at least one of the source or return conductors, with the DC voltage regulator being configured to regulate the voltage of a respective PV string or group of strings. A controller selectively controls a voltage output by the DC voltage regulator and is programmed to periodically cause the DC voltage regulator to alter the voltage of a PV string or group of strings, detect a change in current in the respective PV string(s) responsive to the altering of the voltage, and perform at least one of a PV string degradation detection and causal diagnosis and a grounded conductor fault detection.

    摘要翻译: PV系统包括多个PV串,其配置成响应于所接收的太阳辐射而产生串输出功率,源光导体和返回导体由PV串提供。 一个或多个DC电压调节器电连接到至少一个源极或返回导体上的PV串,其中DC电压调节器被配置为调节相应的PV串或一组串的电压。 控制器选择性地控制由直流电压调节器输出的电压,并且被编程为周期性地使直流电压调节器改变PV串或一组串的电压,响应于相应的PV串来检测电流的变化 改变电压,并执行PV串劣化检测和因果诊断以及接地导体故障检测中的至少一个。

    SYSTEM AND METHOD FOR MOTOR SPEED ESTIMATION OF AN ELECTRIC MOTOR
    22.
    发明申请
    SYSTEM AND METHOD FOR MOTOR SPEED ESTIMATION OF AN ELECTRIC MOTOR 有权
    电动机电机速度估计系统与方法

    公开(公告)号:US20110050142A1

    公开(公告)日:2011-03-03

    申请号:US12547723

    申请日:2009-08-26

    IPC分类号: H02P23/14 H02P27/04 G01P3/00

    CPC分类号: H02P27/045 H02P23/14

    摘要: A system and method for a motor management system includes a computer readable storage medium and a processing unit. The processing unit configured to determine a voltage value of a voltage input to an alternating current (AC) motor, determine a frequency value of at least one of a voltage input and a current input to the AC motor, determine a load value from the AC motor, and access a set of motor nameplate data, where the set of motor nameplate data includes a rated power, a rated speed, a rated frequency, and a rated voltage of the AC motor. The processing unit is also configured to estimate a motor speed based on the voltage value, the frequency value, the load value, and the set of nameplate data and also store the motor speed on the computer readable storage medium.

    摘要翻译: 一种用于电机管理系统的系统和方法,包括计算机可读存储介质和处理单元。 所述处理单元被配置为确定输入到交流电动机的电压的电压值,确定对所述AC电动机输入的电压输入和电流中的至少一个的频率值,从所述AC 电机,并访问一组电机铭牌数据,其中电机铭牌数据集包括交流电机的额定功率,额定转速,额定频率和额定电压。 处理单元还被配置为基于电压值,频率值,负载值和铭牌数据集来估计电动机速度,并且还将电动机速度存储在计算机可读存储介质上。

    Home system including a portable fob having a display
    23.
    发明授权
    Home system including a portable fob having a display 失效
    家庭系统包括具有显示器的便携式小容器

    公开(公告)号:US07319853B2

    公开(公告)日:2008-01-15

    申请号:US10686187

    申请日:2003-10-15

    IPC分类号: H04B1/06 H04B7/00

    摘要: A home wellness system includes a headless base station having a first wireless communication port, a portable fob having a second wireless communication port, a user input device and a display, and plurality of sensors. Each of the sensors senses information and includes a third wireless communication port, which sends the sensed information to the first wireless communication port of the headless base station. The headless base station sends the sensed information for one, some or all of the sensors from its first wireless communication port to the second wireless communication port of the portable fob. The portable fob displays the sensed information for one, more or all of the sensors at its display.

    摘要翻译: 家庭健康系统包括具有第一无线通信端口的无头基站,具有第二无线通信端口的便携式终端,用户输入设备和显示器以及多个传感器。 每个传感器感测信息,并且包括第三无线通信端口,其将感测到的信息发送到无头基站的第一无线通信端口。 无头基站将一个,部分或全部传感器的感测信息从其第一无线通信端口发送到便携式小车的第二无线通信端口。 便携式工作台在其显示屏上显示一个,多个或所有传感器的感测信息。