System and method for monitoring health of electrical machines
First Claim
Patent Images
1. A system for monitoring health of an electrical machine, the system comprising:
- at least one sensor element embedded in or directly disposed on at least one substrate element located in a stator core;
a measuring subsystem coupled to the at least one sensor element and configured to monitor the health based on changes in electromagnetic characteristics of the sensor element due to changes in force acting on the substrate element or compression of the substrate element during operation and shutdown of the electrical machine.
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Abstract
A system for monitoring health of an electrical machine is provided. The system includes at least one sensor element embedded in at least one substrate element located in a stator core. The system further includes a measuring subsystem coupled to the at least one sensor element and configured to monitor the health based on changes in electromagnetic characteristics of the sensor element due to changes in force acting on the substrate element or compression of the substrate element.
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Citations
28 Claims
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1. A system for monitoring health of an electrical machine, the system comprising:
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at least one sensor element embedded in or directly disposed on at least one substrate element located in a stator core; a measuring subsystem coupled to the at least one sensor element and configured to monitor the health based on changes in electromagnetic characteristics of the sensor element due to changes in force acting on the substrate element or compression of the substrate element during operation and shutdown of the electrical machine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for monitoring stator wedge tightness in an electrical machine, the system comprising:
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at least one sensor element embedded in or disposed on at least one substrate element located proximate to the stator wedge of a stator core; at least one switch for indicating a state of compression in the substrate element; and a measuring subsystem coupled to the at least one sensor element and configured to monitor the stator wedge tightness based on changes in electromagnetic characteristics of the sensor element due to changes in compression of the substrate element. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A method for monitoring stator wedge tightness in an electrical machine, the method comprising;
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providing at least one sensor element embedded in or directly disposed on at least one substrate element located in a stator core; generating signals based on changes in electromagnetic characteristics of the sensor element corresponding to changes in compression of the substrate element; and determining the stator wedge tightness by analyzing the signals during operation and shutdown of the electrical machine. - View Dependent Claims (22, 23, 24, 25)
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26. A method for monitoring health of an electrical machine, the method comprising;
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providing at least one sensor element embedded in or directly disposed on at least one substrate element located in a stator core; generating signals based on changes in electromagnetic characteristics of the sensor element corresponding to changes in time varying force acting on the substrate element during operation or shutdown of the machine; and determining the health of the machine by analyzing the signals during operation and shutdown of the electrical machine. - View Dependent Claims (27, 28)
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Specification