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公开(公告)号：US08566056B2
公开(公告)日：2013-10-22
申请号：US12816461
申请日：2010-06-16
申请人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
发明人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
CPC分类号： H02P27/047 , G01P3/48 , G01P3/489 , H02P21/18 , H02P23/14
摘要： A system and method for determining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.
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公开(公告)号：US20110313717A1
公开(公告)日：2011-12-22
申请号：US12816461
申请日：2010-06-16
申请人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
发明人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
IPC分类号： G06F19/00
CPC分类号： H02P27/047 , G01P3/48 , G01P3/489 , H02P21/18 , H02P23/14
摘要： A system and method for determining rotor speed of an AC induction machine is disclosed. The system is programmed to estimate a rotor speed of the induction machine according to a linear speed estimation algorithm and based on name plate information (NPI) of the induction machine and parameters of the AC induction machine during operation thereof. The rotor speed estimation system is also programmed to estimate a rotor speed of the AC induction machine according to a frequency-domain signal processing algorithm and determine if the rotor speed estimated thereby is valid. If the rotor speed estimated by the frequency-domain signal processing algorithm is valid, then a tuned rotor speed of the AC induction machine is estimated according to the linear speed estimation algorithm and based, in part, on the rotor speed estimated by the frequency-domain signal processing algorithm.
摘要翻译： 公开了一种用于确定AC感应电机的转子速度的系统和方法。 该系统被编程为根据线速度估计算法并且基于感应电动机的铭牌信息（NPI）以及在其运行期间的AC感应电机的参数来估计感应电机的转子速度。 转子速度估计系统还被编程为根据频域信号处理算法估计AC感应电机的转子速度，并且确定由此估计的转子速度是否有效。 如果通过频域信号处理算法估计的转子速度有效，则根据线速度估计算法估计交流感应电机的调谐转子速度，部分基于由频域信号处理算法估计的转子速度， 域信号处理算法。
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公开(公告)号：US09777748B2
公开(公告)日：2017-10-03
申请号：US12753930
申请日：2010-04-05
申请人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
发明人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
CPC分类号： F04D29/669 , F04D15/0077 , F04D15/0088
摘要： A system and method for detecting cavitation in pumps for fixed and variable supply frequency applications is disclosed. The system includes a controller having a processor programmed to repeatedly receive real-time operating current data from a motor driving a pump, generate a current frequency spectrum from the current data, and analyze current data within a pair of signature frequency bands of the current frequency spectrum. The processor is further programmed to repeatedly determine fault signatures as a function of the current data within the pair of signature frequency bands, repeatedly determine fault indices based on the fault signatures and a dynamic reference signature, compare the fault indices to a reference index, and identify a cavitation condition in a pump based on a comparison between the reference index and a current fault index.
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公开(公告)号：US20110241888A1
公开(公告)日：2011-10-06
申请号：US12753930
申请日：2010-04-05
申请人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
发明人： Bin Lu , Santosh Kumar Sharma , Ting Yan , Steven A. Dimino
CPC分类号： F04D29/669 , F04D15/0077 , F04D15/0088
摘要： A system and method for detecting cavitation in pumps for fixed and variable supply frequency applications is disclosed. The system includes a controller having a processor programmed to repeatedly receive real-time operating current data from a motor driving a pump, generate a current frequency spectrum from the current data, and analyze current data within a pair of signature frequency bands of the current frequency spectrum. The processor is further programmed to repeatedly determine fault signatures as a function of the current data within the pair of signature frequency bands, repeatedly determine fault indices based on the fault signatures and a dynamic reference signature, compare the fault indices to a reference index, and identify a cavitation condition in a pump based on a comparison between the reference index and a current fault index.
摘要翻译： 公开了一种用于在固定和可变电源频率应用的泵中检测气蚀的系统和方法。 该系统包括具有处理器的控制器，其被编程为重复地接收来自驱动泵的电动机的实时操作电流数据，从当前数据生成当前频谱，并分析当前频率的一对签名频带内的当前数据 光谱。 处理器进一步被编程为重复地将故障签名确定为一对签名频带内的当前数据的函数，基于故障签名和动态参考签名重复地确定故障索引，将故障索引与参考索引进行比较，以及 基于参考指数和当前故障指数之间的比较，识别泵中的气蚀条件。
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公开(公告)号：US20110050142A1
公开(公告)日：2011-03-03
申请号：US12547723
申请日：2009-08-26
申请人： Bin Lu , Ting Yan , Charles John Luebke , Santosh Kumar Sharma
发明人： Bin Lu , Ting Yan , Charles John Luebke , Santosh Kumar Sharma
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。
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公开(公告)号：US08203298B2
公开(公告)日：2012-06-19
申请号：US12547723
申请日：2009-08-26
申请人： Bin Lu , Ting Yan , Charles John Luebke , Santosh Kumar Sharma
发明人： Bin Lu , Ting Yan , Charles John Luebke , Santosh Kumar Sharma
IPC分类号： H02P23/14
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。
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公开(公告)号：US20220413063A1
公开(公告)日：2022-12-29
申请号：US17362396
申请日：2021-06-29
申请人： Prasad Arvind Venikar , Rajasekhar Navara , Yogesh Rajwade , Santosh Kumar Sharma , Eddie Wilkie , David Glenn Loucks
发明人： Prasad Arvind Venikar , Rajasekhar Navara , Yogesh Rajwade , Santosh Kumar Sharma , Eddie Wilkie , David Glenn Loucks
摘要： Voltage samples are collected for a source and loads connected thereto by an electrical network. Respective negative sequence voltage difference values are generated for respective source/load pairs from the voltage sample. A connection (e.g., a loose connection) in the electrical network is identified based on the generated negative sequence voltage difference values. The identified connection is reported to a user. Identifying a connection in the electrical network may include identifying at least one source/load pair having an associated negative sequence voltage difference value that meets a predetermined criterion and identifying the connection based on the identified at least one source/load pair. Identifying the connection may include identifying at least one source/load pair having an associated negative sequence voltage difference value with a magnitude falling outside of at least one range associated with the at least one source/load pair.
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