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公开(公告)号：US20220399837A1
公开(公告)日：2022-12-15
申请号：US17892432
申请日：2022-08-22
发明人： Kevin M. JEFFERIES , Benjamin W. EDWARDS , Alan E. FREEMAN , Richard K WEILER , Matthew L. WHITE
IPC分类号： H02P1/26
摘要： Techniques for monitoring the health of a three-phase induction motor are provided. An expected threshold value is calculated as a function of an expected ratio of current unbalance to voltage unbalance for the three-phase motor. Embodiments determine whether a measured current unbalance exceeds the expected threshold value. Responsive to the measured current unbalance exceeding the expected threshold value, a remedial action may be taken, such as generating diagnostic information or activating one or more protection operations for the three-phase induction motor.
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公开(公告)号：US20210181243A1
公开(公告)日：2021-06-17
申请号：US16715573
申请日：2019-12-16
IPC分类号： G01R19/25
摘要： A measurement module uses harmonic compensation factors to minimize the effects of harmonic distortion in measurements of a source current by a current sensor of the module. The module samples at a first sampling rate, measurements of the source current to generate a first current measurement. The module samples at a second sampling rate higher than the first sampling rate, for an interval of time, measurements of the source current to generate a second current measurement. The module determines a harmonic compensation factor based, at least, on a difference between the first current measurement and the second current measurement. The module determines a reported current computed as a function of at least the first current measurement, the difference between the first current measurement and the second current measurement, and the harmonic compensation factor. The reported current represents a magnitude of the source current adjusted by the harmonic compensation factor.
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公开(公告)号：US20160280092A1
公开(公告)日：2016-09-29
申请号：US15034196
申请日：2013-12-06
发明人： Kevin M. JEFFERIES , Benjamin W. EDWARDS , Matthew L. WHITE , Konstantin A. FILIPPENKO , Richard K. WEILER
IPC分类号： B60L11/18
CPC分类号： B60L11/1844 , B60L11/1809 , B60L11/184 , B60L11/185 , G06Q10/06312 , H02J7/0027 , H02J7/007 , Y02E60/721 , Y02T10/7005 , Y02T10/7055 , Y02T10/7072 , Y02T90/121 , Y02T90/128 , Y02T90/14 , Y02T90/16 , Y02T90/163 , Y02T90/169 , Y04S10/126 , Y04S30/14
摘要： A distributed energy management method and system 100 are disclosed for managing a charge rate of an array of EVSEs 140 that share a common power source. In the disclosed method and system, control of the power sharing is distributed at the individual EVSE level. For example, each EVSE includes a communication device 540 and a controller 530. The communication device is used to receive a signal relating to a present current capacity utilization of the shared circuit, such as an indication of availability or unavailability of current capacity on the shared circuit. The controller is configured to generate a variable update interval, and initiate adjustment of the charge rate of the EVSE according to the variable update interval based on the present current capacity utilization as indicated by the received signal.
摘要翻译： 公开了一种分布式能量管理方法和系统100，用于管理共享公共电源的EVSE阵列140的充电速率。 在所公开的方法和系统中，功率共享的控制分配在各个EVSE级别。 例如，每个EVSE包括通信设备540和控制器530.通信设备用于接收与共享电路的当前当前容量利用相关的信号，例如共享电路的可用性或当前容量的不可用性的指示 电路。 控制器被配置为产生可变更新间隔，并且基于由接收信号指示的当前容量利用率，根据可变更新间隔开始调整EVSE的充电速率。
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公开(公告)号：US20210247429A1
公开(公告)日：2021-08-12
申请号：US16787278
申请日：2020-02-11
发明人： Kevin M. JEFFERIES , Matthew L. WHITE , Benjamin W. EDWARDS , Richard K. WEILER , Alan E. FREEMAN
摘要： A measurement module receives a defined system topology and system component characteristics information for a system. The measurement module calculates an expected system impedance for the defined system topology. The measurement module collects one or more impedance measurements using a high frequency voltage stimulus. Finally, the measurement module compares the one or more impedance measurements with the expected system impedance to determine adequacy of protective grounding of the system.
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公开(公告)号：US20190190428A1
公开(公告)日：2019-06-20
申请号：US15848758
申请日：2017-12-20
发明人： Richard K. WEILER , Benjamin W. Edwards , Alan E. FREEMAN , Kevin M. JEFFERIES , Julius M. LIPTAK , Matthew L. WHITE
IPC分类号： H02P23/26 , G05F1/70 , G01R31/02 , G01R31/327
CPC分类号： H02P23/26 , G01R31/028 , G01R31/3274 , G05F1/70
摘要： A system and method is provided to monitor wear on a power factor correction capacitor in a motor system. The system and method obtains a baseline inductance angle, reactive power or power factor corresponding to a baseline power factor correction by the capacitor in the circuit; monitors a current supplied to the motor at a location upstream of the capacitor; monitors a voltage supplied to the motor, and determines a present inductance angle, reactive power or power factor based on the monitored current and voltage. The present inductance angle, reactive power or power factor corresponds to a present power factor correction by the capacitor. The system and method can then determine when the power factor correction of the capacitor has degraded to an unsatisfactory level based on a change in the inductance angle, reactive power or power factor from the baseline values, and take appropriate action
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公开(公告)号：US20160181032A1
公开(公告)日：2016-06-23
申请号：US14573039
申请日：2014-12-17
IPC分类号： H01H19/54
摘要： A sealable settings dial assembly includes a casing for electrical equipment, such as an overload relay, and a rotatable dial. The casing includes a wire slot through which to extend a wire of a wire lock mechanism. The rotatable dial is movable relative to the casing, and is used to select a setting from a plurality of different settings for the electrical equipment. The dial includes spaced apart setting channels, such as setting holes or grooves, associated with the different settings to be selected. On the dial, each setting has an associated setting channel which aligns with the wire slot of the casing when the particular setting is selected on the dial. In that way, the wire can be extended through the wire slot and the setting channel for the selected setting to lock the dial at the selected setting.
摘要翻译： 可密封的设置拨盘组件包括用于电气设备的外壳，例如过载继电器和可旋转拨盘。 壳体包括线槽，用于延伸线锁机构的线。 可旋转刻度盘相对于壳体是可移动的，并且用于从电气设备的多个不同设置中选择设置。 表盘包括与要选择的不同设置相关联的间隔开的设置通道，例如设置孔或凹槽。 在刻度盘上，当在表盘上选择特定设置时，每个设置都有一个相关联的设置通道，与外壳的导线槽对齐。 以这种方式，电线可以通过导线槽和所选设置的设置通道延伸，以将拨盘锁定在所选设置。
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公开(公告)号：US20160137082A1
公开(公告)日：2016-05-19
申请号：US14541546
申请日：2014-11-14
发明人： Kevin M. JEFFERIES , Benjamin W. EDWARDS , Matthew L. WHITE , Konstantin A. FILIPPENKO , Richard K. WEILER
CPC分类号： B60L11/1818 , B60L11/1816 , B60L11/1838 , B60L11/1844 , B60L2230/12 , H02J7/0052 , Y02E60/721 , Y02T10/7005 , Y02T10/7088 , Y02T90/121 , Y02T90/128 , Y02T90/14 , Y02T90/163 , Y04S10/126
摘要： An add-on adapter 110 enables a single charging port 102 of an electric vehicle charging station 100 to simultaneously charge two electric vehicles. An adapter controller 120 determines the available charging rate offered by the charging station. Electric vehicle charging handles 150A, 150B are determined to be connected to the electric vehicles. A charge sharing control circuit 300 in the adapter controller, determines modified available charging rates to be offered for simultaneously charging the electric vehicles. The modified available charging rates are based on the connection states of the electric vehicles and the available charging rate offered by the charging station. The adapter controller controls two contactors 130A, 130B to switchably connect a charging station power socket to the electric vehicle charging handles, to provide shared power at the determined modified available charging rate to the electric vehicles, for simultaneous charging.
摘要翻译： 附加适配器110使得电动车辆充电站100的单个充电端口102同时对两个电动车辆充电。 适配器控制器120确定充电站提供的可用充电率。 电动车辆充电手柄150A，150B被确定为连接到电动车辆。 适配器控制器中的电荷共享控制电路300确定为电动车辆同时充电而提供的修改的可用充电率。 修改的可用充电率基于电动车辆的连接状态和充电站提供的可用充电速率。 适配器控制器控制两个接触器130A，130B，以将充电站电源插座可切换地连接到电动车辆充电手柄，以便以确定的改进的可用充电速率向电动车辆提供共享电力，以便同时充电。
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公开(公告)号：US20190190253A1
公开(公告)日：2019-06-20
申请号：US15848552
申请日：2017-12-20
发明人： Kevin M. JEFFERIES , Benjamin W. EDWARDS , Matthew L. WHITE , Alan E. FREEMAN , Richard K. WEILER
IPC分类号： H02H7/08
摘要： In accordance with an example embodiment of the invention, in an overload relay for a three-phase motor, an adjusted threshold for detected current phase unbalance is dynamically determined at which the relay will be tripped. The adjusted threshold is a function of a ratio of an average of currents in the three-phases to the rated full load current of the motor, i.e., motor load. As the motor load decreases, the adjusted current phase unbalance threshold is increased, causing the resulting trip time to increase, thereby increasing motor run time and reducing downtime.
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公开(公告)号：US20160216702A1
公开(公告)日：2016-07-28
申请号：US15025295
申请日：2013-09-30
发明人： Kevin M. JEFFERIES , Benjamin W. EDWARDS , Matthew L. WHITE , Konstantin A. FILIPPENKO , Richard K. WEILER
CPC分类号： G05B15/02 , G05B11/01 , G05B2219/23023 , G05B2219/36163 , G05G1/12
摘要： The invention provides consistent settings between local and remote parameter adjustments of both local and remote HMI. A dial (4) is superimposed on a bistable display substrate (2), having an indicator (7) configured to be manually aligned with a displayed character representing a manual setting of a parameter value for controlling local equipment. A network interface (18) is connected over a communications network (17) to a remote HMI (16), configured to receive a new parameter value for controlling the local equipment (25). A controller (14) samples the current position of the indicator (7) of the dial (4), and provides a control input signal (20) to the bistable display substrate (2) to control a display of the new parameter value in the current position of the indicator (7) of the dial (4) and to provide the new parameter value to the local equipment (25).
摘要翻译： 本发明提供本地和远程HMI本地和远程参数调整之间的一致设置。 在双稳态显示基板（2）上叠加有表盘（4），其具有指示器（7），其被配置为与表示用于控制本地设备的参数值的手动设置的显示字符手动对准。 网络接口（18）通过通信网络（17）连接到远程HMI（16），被配置为接收用于控制本地设备（25）的新参数值。 控制器（14）对拨号盘（4）的指示器（7）的当前位置进行采样，并向双稳态显示基板（2）提供控制输入信号（20），以控制显示器 表盘（4）的指示器（7）的当前位置，并向本地设备（25）提供新的参数值。
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公开(公告)号：US20160141123A1
公开(公告)日：2016-05-19
申请号：US14898800
申请日：2013-06-21
发明人： Kevin M. JEFFERIES , Benjamin W. EDWARDS , Richard G. SPANGENBERG , Richard K. WEILER , Matthew L. WHITE
CPC分类号： H01H9/54 , H02H1/0015 , H02H1/0076 , H02H3/023 , H02H3/08 , H02H3/16 , H02H3/334 , H02H5/04 , H02H5/041 , H02H5/08
摘要： A synthetic fault signal generator assembly is remotely located on a branch circuit downstream from a circuit breaker protecting a load. The synthetic fault signal generator assembly is configured to detect an improper circuit condition that is not independently detected, detectable, or actionable by the circuit breaker such as, for example, a load or outlet receptacle specific problem that can lead to equipment damage or property damage if not mitigated. In response to the improper circuit condition being detected, the synthetic fault signal generator assembly generates a synthetic fault signal, which causes the circuit breaker to trip. The synthetic fault signal generator assembly can inject the synthetic fault signal into the branch circuit to provide the synthetic fault signal to the circuit breaker.
摘要翻译： 合成故障信号发生器组件远程位于保护负载的断路器下游的分支电路上。 合成故障信号发生器组件被配置为检测不是由断路器独立地检测，可检测或可操作的不正确的电路状况，例如可能导致设备损坏或财产损坏的负载或插座容器的特定问题 如果不减轻 响应于检测到不正确的电路状况，合成故障信号发生器组件产生合成故障信号，这导致断路器跳闸。 合成故障信号发生器组件可以将合成故障信号注入到分支电路中以向断路器提供合成故障信号。
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