ANOOMALY DETECTION SYSTEM AND METHOD FOR ELECTRIC DRIVES
First Claim
1. A method for monitoring a condition of an electric drive in a process plant, the electric drive for controlling operation of an electric motor, the method comprising:
- obtaining, with the electric drive from at least one of a drive control unit and one or more sensor units, a set of drive information associated with an operation of the electric drive in a time period and operating status information of the electric motor in the time period, wherein the set of drive information comprises values of operating parameters of the electric drive;
obtaining, with the electric drive from a server, reliability information associated with the electric drive, wherein the reliability information comprises a probability of occurrence of an abnormal condition in a future time period, wherein the reliability information is computed in the server using the set of drive information and a model corresponding to the drive type of the electric drive; and
providing, with the electric drive to one of a human machine interface and a drive controller, at least one condition indication regarding the abnormal condition based on the probability of occurrence of the abnormal condition.
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Accused Products
Abstract
One illustrative method comprises retrieving a set of drive information associated with an operation of an electric drive in a time period from a drive control unit and one or more sensor units. The method further includes obtaining reliability information associated with the electric drive from a server. The reliability information is computed in the server, with the set of drive information and a model corresponding to a drive type of the electric drive. The reliability information includes a probability of occurrence of the abnormal condition in a specified future time period. The method further includes, providing at least one condition indication regarding the abnormal condition to one of a human machine interface and a drive controller based on the probability of occurrence of the abnormal condition.
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Citations
12 Claims
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1. A method for monitoring a condition of an electric drive in a process plant, the electric drive for controlling operation of an electric motor, the method comprising:
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obtaining, with the electric drive from at least one of a drive control unit and one or more sensor units, a set of drive information associated with an operation of the electric drive in a time period and operating status information of the electric motor in the time period, wherein the set of drive information comprises values of operating parameters of the electric drive; obtaining, with the electric drive from a server, reliability information associated with the electric drive, wherein the reliability information comprises a probability of occurrence of an abnormal condition in a future time period, wherein the reliability information is computed in the server using the set of drive information and a model corresponding to the drive type of the electric drive; and providing, with the electric drive to one of a human machine interface and a drive controller, at least one condition indication regarding the abnormal condition based on the probability of occurrence of the abnormal condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus comprising:
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at least one electric drive configured to control operation of an electric motor in a process plant, wherein the at least one electric drive comprises; one or more sensor units configured to measure values of operating parameters of the at least one electric drive, a drive control unit configured to determine a set of drive information associated with the at least one electric drive, wherein the set of drive information comprises the values of the operating parameters, a data acquisition unit to obtain the set of drive information from at least one of the drive control unit and the one or more sensor units. and a communication unit configured to communicate at least one condition indication to at least one human machine interface, the at least one condition indication being based on a probability of occurrence of an abnormal condition in a future time period; and a server coupled to the electric drive, the server comprising; an input interface configured to receive the set of drive information for a time period from the communication unit of the at least one electric drive, a computing unit configured to compute reliability information associated with the at least one electric drive, based on a model corresponding to a drive type of the at least one electric drive selected by the computing unit from among a plurality of models corresponding to different drive types, wherein the reliability information comprises the probability of occurrence of the abnormal condition in the future time period, a condition of the at least one electric drive at a present instant, one or more abnormal operating instances identified during the time period, and an expected time for occurrence of the abnormal condition, and an output interface configured to communicate the computed reliability information to the communication unit of the at least one electric drive. - View Dependent Claims (10, 11, 12)
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Specification