Adaptive estimator-based dynamic sliding mode control for the water level of nuclear steam generators |
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| Affiliation: | 1. Department of Nuclear Engineering and Physics, Amirkabir University of Technology, Hafez Street, Tehran, Iran;2. Department of Electrical Engineering, Amirkabir University of Technology, Hafez Street, Tehran, Iran;1. Department of Electronic Engineering, Daegu University, Gyungsan 712-714, Republic of Korea;2. School of Electrical Engineering, Chungbuk National University, 52 Naesudong-ro, Heungduk-gu, Cheongju 361-763, Republic of Korea;3. Department of Electrical Engineering, Yeungnam University, 214-1 Dae-Dong, Kyongsan 712-749, Republic of Korea;1. State Key Laboratory of Nuclear Power Safety Monitoring Technology and Equipment, Shenzhen, 518172 Guangdong, China;2. Department of Automation, The Key Laboratory of System Control and Information Processing, Ministry of Education, Shanghai Jiao Tong University, 800 Dongchuan Road, 200240, Shanghai, China;1. Department of Electrical Engineering, Indian Institute of Technology Roorkee, India;2. Institute of Automatic Control, Technical University of Lodz, Poland |
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| Abstract: | Steam Generator (SG) is a crucial component of nuclear power plant. The proper water level control of a nuclear steam generator is of great importance in order to secure the sufficient cooling source of the nuclear reactor and to prevent damage of turbine blades. The water level control problem of steam generators has been a main cause of unexpected shutdowns of nuclear power plants which must be considered for plant safety and availability. The control problem is challenging, especially at low power levels due to shrink and swell phenomena and flow measurement errors. Moreover, the dynamics of steam generator vary as the power level changes. Therefore, it is necessary to improve the water level control system of SG. In this paper, an adaptive estimator-based dynamic sliding mode control method is developed for the level control problem. The proposed method exhibits the desired dynamic properties during the entire output tracking process independent of perturbations. Simulation results are presented to demonstrate the effectiveness of the proposed controller in terms of performance, robustness and stability. Simulation results confirm the improvement in transient response obtained by using the proposed controller. |
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