Papers by Keyword: Stator Winding

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Authors: Yong Ming Yang, Fan Jiang, Zu Long Zhang, Kun Ming Lin
Abstract: When do research on the location of partial discharge in power generator’s stator using ultrasonic sensor, there are many problems exist including that ultrasonic signals detection is not obvious or even ultrasonic sensor can not detect ultrasonic signals. This article researches the location distribution in power generator which is favorable for ultrasonic sensor to receive ultrasonic signals. Put forward a placement method of sensor which is applies to the partial discharge location of power generator basing on sonic pressure distribution of ultrasonic signal in the stator’s outer, which is obtained by simulating sound field of power generator stator using ANSYS Multiphysics. The placement method of sensor has laid the foundation for the future research of the partial discharge location of power generator. Through comparing the simulation results and actual experimental test, the authors find that simulation of sonic pressure is similar to experimental results, proving the placement method is validity.
1368
Authors: Xu Hong Wang, Yi Gang He
Abstract: A fuzzy neural network based on-line turn fault detection approach for induction motors is proposed in this paper. B-spline membership fuzzy neural network is employed to detect turn fault and a genetic algorithm with an efficient search strategy is developed to optimize network parameters. Based on it, Experiments are carried out on a special rewound laboratory induction motor, the results show fuzzy neural network based diagnosis model determines the shorted turns exactly, and is more effective than the parameters estimation method under the condition of detecting a slowly developing turn fault.
415
Authors: Yan Fei Wei, Le Qi, Ting Shan Wang, Jian Ping Wang, Zhe Long Xian, Rui Li Liu
Abstract: The temperature rise of generator components has a great impact on operation performance for large turbine generator. In this paper, applying the general FE calculation software-ANSYS, with a sequential electromagnetic-thermal field coupling calculation method, temperature calculation on phase lead connecting structures of 1100MW nuclear power turbine generator parallel rings is presented. The calculation results could offer a basic analysis to optimize the design of the generator.
3040
Authors: Yan Fei Wei, Le Qi, Ting Shan Wang, Jian Ping Wang, Zhe Long Xian, Rui Li Liu
Abstract: The temperature rise of generator components has a great impact on operation performance for large turbine generator. In this paper, applying the general FE calculation software-ANSYS, with a sequential electromagnetic-thermal field coupling calculation method, temperature calculation on phase lead connecting structures of 1100MW nuclear power turbine generator parallel rings is presented. The calculation results could offer a basic analysis to optimize the design of the generator.
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