Nuclear Engineering and Technology

Korean Nuclear Society (한국원자력학회)
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Design of the flexible switching controller for small PWR core power control with the multi-model

  • Zeng, Wenjie (School of Nuclear Science and Technology, University of South China) ;
  • Jiang, Qingfeng (School of Nuclear Science and Technology, University of South China) ;
  • Du, Shangmian (School of Nuclear Science and Technology, University of South China) ;
  • Hui, Tianyu (School of Nuclear Science and Technology, University of South China) ;
  • Liu, Yinuo (School of Nuclear Science and Technology, University of South China) ;
  • Li, Sha (Shenzhen Xinbang Protection Technology Co., Ltd)
  • Received : 2020.06.01
  • Accepted : 2020.07.26
  • Published : 2021.03.25
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Abstract

Small PWR can be used for power generation and heating. Considering that small PWR has the characteristics of flexible operating conditions and complex operating environment, the controller designed based on single power level is difficult to achieve the ideal control of small PWR in the whole range of core power range. To solve this problem, a flexible switching controller based on fuzzy controller and LQG/LTR controller is designed. Firstly, a core fuzzy multi-model suitable for full power range is established. Then, T-S fuzzy rules are designed to realize the flexible switching between fuzzy controller and LQG/LTR controller. Finally, based on the core power feedback principle, the core flexible switching control system of small PWR is established and simulated. The results show that the flexible switching controller can effectively control the core power of small PWR and the control effect has the advantages of both fuzzy controller and LQG/LTR controller.

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Acknowledgement

The authors would like to thank anonymous reviewers for their valuable comments. The work is supported in part by the Excellent Youth Project of Scientific Research Fund of Hunan Provincial Education Department (grant number 18B259, 18B265) and the Natural Science Foundation of Hunan Province (grant number 2020JJ5469).

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