Analysis of Thermo-Mechanical Stress in Fiber Bragg Grating Used for Hydro-Generator Rotor Temperature Monitoring

Leite, Reinaldo C.; Dmitriev, Victor; Hudon, C.; Gingras, S.; Guddemi, C.; Piccard, J.; Mydlarsky, L.

doi:10.1590/2179-10742017v16i2818

Cited by 8 publications

(5 citation statements)

References 12 publications

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“…An array of thermal sensing points can then be established by employing a single fiber carrying multiple multiplexed FBG heads to observe the in-service conditions on PM and induction machine rotors or, where necessary or convenient, to use multiple separate fibers. Due to the limited space on the rotor in smaller machine geometries and the general challenges imposed by rotor movement in all-electric machinery, the applied FBG sensors have typically been bonded to the desired rotor locations using epoxy resin or cyanoacrylate glue; this can result in the inclusion of mechanical excitation related artifacts in the observed measurements [36,37]. While this is functional and able to facilitate continuous in-service thermal monitoring, this method is reasonably costly and challenging for practical implementation in typical power conversion applications of electric machines due to the relatively high cost of the FORJ device and the requirements for its in-line installation on the machine shaft.…”

Section: Thermal Sensingmentioning

confidence: 99%

Fiber Optic Fiber Bragg Grating Sensing for Monitoring and Testing of Electric Machinery: Current State of the Art and Outlook

et al. 2022

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This paper presents a review of the recent trends and the current state of the art in the application of fiber optic fiber Bragg gratings (FBG) sensing technology to condition the monitoring (CM) and testing of practical electric machinery and the associated power equipment. FBG technology has received considerable interest in this field in recent years, with research demonstrating that the flexible, multi-physical, and electromagnetic interference (EMI) immune in situ sensing of a multitude of physical measurands of CM interest is possible and cannot be obtained through conventional sensing means. The unique FBG sensing ability has the potential to unlock many of the electric machine CM and design validation restrictions imposed by the limitations of conventional sensing techniques but needs further research to attain wider adoption. This paper first presents the fundamental principles of FBG sensing. This is followed by a description of recent FBG sensing techniques proposed for electric machinery and associated power equipment and a discussion of their individual benefits and limitations. Finally, an outlook for the further application of this technique is presented. The underlying intention is for the review to provide an up-to-date overview of the state of the art in this area and inform future developments in FBG sensing in electric machinery.

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Section: Thermal Sensingmentioning

confidence: 99%

Fiber Optic Fiber Bragg Grating Sensing for Monitoring and Testing of Electric Machinery: Current State of the Art and Outlook

et al. 2022

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“…FBG measurement is commercially used in WT as a leading solution for monitoring of WT blade stress [71]. Due to its inherent advantages, the technology has also received recent research attention for application in drivetrain CM and power devices in general and has been shown to have promising potential to enable advanced in situ CM solutions for generators and also the power electronics components [72,[75][76][77][78][79][80][81][82]. FBG monitoring is currently not commercially used for WT drivetrain CM.…”

Section: Fiber Bragg Grating Sensors Measurementmentioning

confidence: 99%

Intelligent Condition Monitoring of Wind Power Systems: State of the Art Review

et al. 2021

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Modern wind turbines operate in continuously transient conditions, with varying speed, torque, and power based on the stochastic nature of the wind resource. This variability affects not only the operational performance of the wind power system, but can also affect its integrity under service conditions. Condition monitoring continues to play an important role in achieving reliable and economic operation of wind turbines. This paper reviews the current advances in wind turbine condition monitoring, ranging from conventional condition monitoring and signal processing tools to machine-learning-based condition monitoring and usage of big data mining for predictive maintenance. A systematic review is presented of signal-based and data-driven modeling methodologies using intelligent and machine learning approaches, with the view to providing a critical evaluation of the recent developments in this area, and their applications in diagnosis, prognosis, health assessment, and predictive maintenance of wind turbines and farms.

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“…In terms of EM rotor, compact FBG temperature sensors were attached on rotor, and with help of a multichannel optical rotating joint for signal transmission (Hudon et al 2016a). FBG strain simulation was designed since the FBG on the operating rotor was exposed to both thermal and mechanical effects (Leite et al 2017). The simulation results would cancel the thermal-strain cross effect of FBG and guarantee the accuracy of FBG temperature readings.…”

Section: Temperature Monitoringmentioning

confidence: 99%

Fibre optic sensors for the monitoring of rotating electric machines: a review

et al. 2021

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Accurate and efficient monitoring of electrical machine (EM) operating parameters, including temperature, mechanical vibration, torque and rotating speed and others that can indicate the EM health conditions is becoming ever more important in the world of electrical drives. The traditional methodology of one sensor per parameter can be theoretically replaced by a "one sensor measures all" technology, which can be achieved through the use of fibre-optic sensors (FOS). In this paper, several FOSs, which use different optical sensing principles for multiple physical parameter measurements of EMs, are reviewed. This paper also provides an insight into the major developments, and discusses the engineering challenges of FOS used for EM monitoring over the last few decades, and compares the advanced features of FOS with those of conventional sensors in use. Finally, a novel FOS-EM observer system scheme employing the Fibre Bragg Grating technique for multiparameter monitoring of EM health is proposed, after discussion of the preceding industrial and academic FOS cases for EM applications.

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Analysis of Thermo-Mechanical Stress in Fiber Bragg Grating Used for Hydro-Generator Rotor Temperature Monitoring

Cited by 8 publications

References 12 publications

Fiber Optic Fiber Bragg Grating Sensing for Monitoring and Testing of Electric Machinery: Current State of the Art and Outlook

Fiber Optic Fiber Bragg Grating Sensing for Monitoring and Testing of Electric Machinery: Current State of the Art and Outlook

Intelligent Condition Monitoring of Wind Power Systems: State of the Art Review

Fibre optic sensors for the monitoring of rotating electric machines: a review

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