LAPSE:2023.13309
Published Article
LAPSE:2023.13309
Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators
March 1, 2023
Abstract
This paper analyzes the electromagnetic torque (EMT) fluctuation characteristics in synchronous generators under rotor interturn short-circuit (DRISC) fault. The novelty of this paper is that the DRISC fault is proposed based on the intermittent interturn short circuit existing in the actual operation and compared with the static rotor interturn short-circuit (SRISC) fault. In the work, by studying the influence of DRISC with different positions and different short-circuit degrees, the fluctuation characteristic of the EMT is analyzed and verified. The results show that when the DRISC5% fails, the location is in slot 3, the amplitude of first harmonic decreases by 7.2%, second harmonic amplitude increases by 33.4%, third harmonic decreases by 4.3%, and fourth harmonic increases by 26.8%. As the degree increased and positioned away from the large tooth of the DRISC, the overall EMT amplitude and reverse pulse increased, first and third harmonics decreased, and second and fourth harmonics increased.
This paper analyzes the electromagnetic torque (EMT) fluctuation characteristics in synchronous generators under rotor interturn short-circuit (DRISC) fault. The novelty of this paper is that the DRISC fault is proposed based on the intermittent interturn short circuit existing in the actual operation and compared with the static rotor interturn short-circuit (SRISC) fault. In the work, by studying the influence of DRISC with different positions and different short-circuit degrees, the fluctuation characteristic of the EMT is analyzed and verified. The results show that when the DRISC5% fails, the location is in slot 3, the amplitude of first harmonic decreases by 7.2%, second harmonic amplitude increases by 33.4%, third harmonic decreases by 4.3%, and fourth harmonic increases by 26.8%. As the degree increased and positioned away from the large tooth of the DRISC, the overall EMT amplitude and reverse pulse increased, first and third harmonics decreased, and second and fourth harmonics increased.
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Keywords
dynamic rotor interturn short circuit (DRISC), electromagnetic torque (EMT), harmonic component, magneto-motive force (MMF), synchronous generator
Subject
Suggested Citation
He Y, Qiu M, Yuan X, Wang H, Jiang M, Gerada C, Wan S. Electromagnetic Torque Fluctuating Properties under Dynamic RISC Fault in Turbogenerators. (2023). LAPSE:2023.13309
Author Affiliations
He Y: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China [ORCID]
Qiu M: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Yuan X: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Wang H: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Jiang M: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Gerada C: Power Electronics, Machines and Control (PEMC) Research Group, University of Nottingham, Nottingham NG7 2RD, UK
Wan S: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Qiu M: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Yuan X: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Wang H: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Jiang M: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Gerada C: Power Electronics, Machines and Control (PEMC) Research Group, University of Nottingham, Nottingham NG7 2RD, UK
Wan S: Hebei Key Lab of Electric Machninery Maintenance and Failure Prevention, Department of Mechanical Engineering, North China Electric Power University, Baoding 071003, China
Journal Name
Energies
Volume
15
Issue
10
First Page
3821
Year
2022
Publication Date
2022-05-23
ISSN
1996-1073
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PII: en15103821, Publication Type: Journal Article
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LAPSE:2023.13309
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https://doi.org/10.3390/en15103821
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Mar 1, 2023
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