Patents by Inventor John Mihok
John Mihok has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11473564Abstract: A system and method for monitoring a pitch system of a wind turbine includes monitoring, via one or more first sensors, at least one electrical condition of the pitch system. The method also includes monitoring, via one or more second sensors, at least one mechanical condition of the pitch system. Further, the method includes receiving, via a controller communicatively coupled to the one or more first and second sensors, sensor signals representing the at least one electrical condition and the at least one mechanical condition of the pitch system. Thus, the method includes determining, via the controller, a bearing condition of a pitch bearing of the pitch system based on the at least one electrical condition and the at least one mechanical condition of the pitch system.Type: GrantFiled: January 18, 2018Date of Patent: October 18, 2022Assignee: General Electric CompanyInventors: Lijun He, Liwei Hao, John Mihok
-
Publication number: 20220292666Abstract: A system and method including receiving historical time series sensor data associated with operation of an industrial asset; generating visual representation images of scatter plots based on the historical time series sensor data based on a reference to a digitized knowledge domain associated with the industrial asset; assigning a root cause label to each image; generating a convolutional neural network (CNN) model trained and tested using subsets of the labeled images; and processing, by the CNN model, a real-time image to detect at least one anomaly in the real-time image and one or more root causes associated with the at least one anomaly.Type: ApplicationFiled: August 27, 2020Publication date: September 15, 2022Inventors: Zhanpan ZHANG, Guangliang ZHAO, Jin XIA, John MIHOK, Peter Alan GREGG, Bouchra BOUQATA
-
Patent number: 11378063Abstract: A method of correcting turbine underperformance includes calculating a power production curve using monitored data, detecting changes between the monitored data and a baseline power production curve, generating operability curves for paired operational variables from the monitored data, detecting changes between the operability curves and corresponding baseline operability curves, comparing the changes to a respective predetermined metric, and if the change exceeds the metric, providing feedback to a turbine control system identifying at least one of the paired operational variables for each paired variable in excess of the metric. A system and a non-transitory computer-readable medium are also disclosed.Type: GrantFiled: February 21, 2020Date of Patent: July 5, 2022Assignee: General Electric CompanyInventors: Zhanpan Zhang, Peter Alan Gregg, Jin Xia, John Mihok, Guangliang Zhao, Bouchra Bouqata
-
Publication number: 20210262446Abstract: A method of correcting turbine underperformance includes calculating a power production curve using monitored data, detecting changes between the monitored data and a baseline power production curve, generating operability curves for paired operational variables from the monitored data, detecting changes between the operability curves and corresponding baseline operability curves, comparing the changes to a respective predetermined metric, and if the change exceeds the metric, providing feedback to a turbine control system identifying at least one of the paired operational variables for each paired variable in excess of the metric. A system and a non-transitory computer-readable medium are also disclosed.Type: ApplicationFiled: February 21, 2020Publication date: August 26, 2021Inventors: Zhanpan ZHANG, Peter Alan GREGG, Jin XIA, John MIHOK, Guangliang ZHAO, Bouchra BOUQATA
-
Publication number: 20190332958Abstract: A system and method including receiving vibration spectrum data from a plurality of different assets; determining, based on a shape of the vibration spectrum data for each of the plurality of assets, clusters for the plurality of assets, assets being grouped in a same cluster having vibration spectrum data of a similar spectral shape; determining for each of the clusters, based on an application of domain derived pattern recognition rules for the vibration spectrum data, one of a plurality of fault classifications; generating an output including an association of each of the plurality of assets with the fault classification of the cluster in which the particular asset is grouped; and saving a record of the output.Type: ApplicationFiled: April 30, 2018Publication date: October 31, 2019Inventors: Ghosh SUBHANKAR, Vipul PAUL, Srinivas KANNEPALLI, Aditya KARNIK, Jeremy CANARY, Joshua POTTER, John MIHOK, Sridhar DASARATHA
-
Publication number: 20190219032Abstract: A system and method for monitoring a pitch system of a wind turbine includes monitoring, via one or more first sensors, at least one electrical condition of the pitch system. The method also includes monitoring, via one or more second sensors, at least one mechanical condition of the pitch system. Further, the method includes receiving, via a controller communicatively coupled to the one or more first and second sensors, sensor signals representing the at least one electrical condition and the at least one mechanical condition of the pitch system. Thus, the method includes determining, via the controller, a bearing condition of a pitch bearing of the pitch system based on the at least one electrical condition and the at least one mechanical condition of the pitch system.Type: ApplicationFiled: January 18, 2018Publication date: July 18, 2019Inventors: Lijun He, Liwei Hao, John Mihok
-
Patent number: 10254270Abstract: A system includes a resonant sensor in contact with oil within a gearbox of a rotor system, such as a wind turbine, and one or more processors. The sensor includes electrodes and a sensing circuit that generates electrical stimuli having frequencies applied to the oil at different times during a life of the gearbox. The processors receive electrical signals from the resonant sensor representative of impedance responses of the oil to the electrical stimuli. The processors analyze the impedance responses and determine a concentration of a polar analyte in the oil at different times. The processors calculate a degradation value for the gearbox based on the concentration of the polar analyte. Responsive to the degradation value exceeding a designated threshold, the processors at least one of schedule maintenance for the rotor system, provide an alert to schedule maintenance, or prohibit operation of the rotor system until maintenance is performed.Type: GrantFiled: January 30, 2017Date of Patent: April 9, 2019Assignee: General Electric CompanyInventors: Radislav Alexandrovich Potyrailo, Michael Garry, John Mihok, Robert Mcleod
-
Publication number: 20170138922Abstract: A system includes a resonant sensor in contact with oil within a gearbox of a rotor system, such as a wind turbine, and one or more processors. The sensor includes electrodes and a sensing circuit that generates electrical stimuli having frequencies applied to the oil at different times during a life of the gearbox. The processors receive electrical signals from the resonant sensor representative of impedance responses of the oil to the electrical stimuli. The processors analyze the impedance responses and determine a concentration of a polar analyte in the oil at different times. The processors calculate a degradation value for the gearbox based on the concentration of the polar analyte. Responsive to the degradation value exceeding a designated threshold, the processors at least one of schedule maintenance for the rotor system, provide an alert to schedule maintenance, or prohibit operation of the rotor system until maintenance is performed.Type: ApplicationFiled: January 30, 2017Publication date: May 18, 2017Inventors: Radislav Alexandrovich Potyrailo, Michael Garry, John Mihok, Robert Mcleod
-
Patent number: 8219356Abstract: A device and method for use in detecting anomalies in wind turbines is provided. The method includes monitoring data acquired by at least one sensor in a first wind turbine, wherein the data is calculated to produce a value for a predetermined amount of time, monitoring data acquired by at least one sensor in a grouping of wind turbines similar to the first wind turbine, wherein the monitored data corresponds to the monitored data of the first wind turbine and is combined for a predetermined amount of time, and comparing the monitored data of the first wind turbine with the monitored data of the grouping of wind turbines. The method also includes generating a sensor error if the monitored data of the first wind turbine deviates more than a predetermined amount from the monitored data of the grouping of wind turbines, and displaying the results of the comparison of the monitored data.Type: GrantFiled: December 23, 2010Date of Patent: July 10, 2012Assignee: General Electric CompanyInventors: John Mihok, Sameh R. Salem, Dhaval Bhalodia, David Korim
-
Publication number: 20110270577Abstract: A device and method for use in detecting anomalies in wind turbines is provided. The method includes monitoring data acquired by at least one sensor in a first wind turbine, wherein the data is calculated to produce a value for a predetermined amount of time, monitoring data acquired by at least one sensor in a grouping of wind turbines similar to the first wind turbine, wherein the monitored data corresponds to the monitored data of the first wind turbine and is combined for a predetermined amount of time, and comparing the monitored data of the first wind turbine with the monitored data of the grouping of wind turbines. The method also includes generating a sensor error if the monitored data of the first wind turbine deviates more than a predetermined amount from the monitored data of the grouping of wind turbines, and displaying the results of the comparison of the monitored data.Type: ApplicationFiled: December 23, 2010Publication date: November 3, 2011Inventors: John Mihok, Sameh R. Salem, Dhaval Bhalodia, David Korim