Analysis of Magnetic Saturation Characteristics of Control Rod Drive Mechanism

Yang Yun; Yu Tianda; Chen Yangming; Li Qingzhao; Liu Yanting; Xu Qiwei; Luo Lingyan

doi:10.13832/j.jnpe.2023.03.0138

Volume 44 Issue 3

Jun. 2023

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Yang Yun, Yu Tianda, Chen Yangming, Li Qingzhao, Liu Yanting, Xu Qiwei, Luo Lingyan. Analysis of Magnetic Saturation Characteristics of Control Rod Drive Mechanism[J]. Nuclear Power Engineering, 2023, 44(3): 138-143. doi: 10.13832/j.jnpe.2023.03.0138

Citation:

Yang Yun, Yu Tianda, Chen Yangming, Li Qingzhao, Liu Yanting, Xu Qiwei, Luo Lingyan. Analysis of Magnetic Saturation Characteristics of Control Rod Drive Mechanism[J]. Nuclear Power Engineering, 2023, 44(3): 138-143. doi: 10.13832/j.jnpe.2023.03.0138

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Analysis of Magnetic Saturation Characteristics of Control Rod Drive Mechanism

doi: 10.13832/j.jnpe.2023.03.0138

1.
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing, 400044, China
2.
Science and Technology on Reactor System Design Technology Laboratory, Nuclear Power Institute of China, Chengdu, 610213, China

Received Date: 2022-06-20
Rev Recd Date: 2023-02-13
Publish Date: 2023-06-15

Abstract

Abstract

In this paper, the impact of magnetic saturation on the electromagnetic parameters and magnetic circuit parameters of the control rod drive mechanism (CRDM) is studied by combining theoretical and finite element analysis (FEA). The method of obtaining magnetic circuit parameters is derived by establishing an equivalent magnetic circuit (EMC) model of the CRDM. The change law of the electromagnetic and magnetic circuit parameters of the CRDM with the current and length of the main air gap is obtained based on FEA. The results show that magnetic saturation significantly affects the main magnetic circuit's residual reluctance and inductance. The flux leakage coefficient of the CRDM has little relationship with the magnetic saturation but is greatly affected by the length of the main air gap. The reluctance of the main air gap should consider the air gap flux edge effect. This study provides a theoretical basis for the EMC model optimization of CRDM.
- Control rod drive mechanism (CRDM),
- Magnetic saturation,
- Equivalent magnetic circuit (EMC) model,
- Finite element analysis (FEA)

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References(8)

References

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