Study on Electromagnetic Structure Design of Electromagnetic Bearing Body for Control Rod Drive Mechanism
-
摘要: 电磁结构设计是控制棒驱动机构用电磁轴承本体设计的核心环节。为了获得合理的电磁结构，针对不同磁通分布形式进行了电磁结构选型，建立了用于电磁分析的解析模型和有限元模型；然后采用有限元仿真分析的方法确定了电磁轴承的工作点，并对电流刚度和位移刚度等电磁轴承关键性能参数进行了深入分析研究；最后采用有限元仿真分析结果与解析计算结果对比的方式进行了互算验证。验证结果表明，控制棒驱动机构用电磁轴承本体电磁结构设计合理，各项性能指标均可满足设计要求。Abstract: The electromagnetic structure design is the core of the design of electromagnetic bearing body for control rod drive mechanism (CRDM). In order to obtain a reasonable electromagnetic structure, a certain electromagnetic structure is selected according to different shapes of magnetic flux distribution, and used to build the analytical model and finite element model for electromagnetic analysis. Then, the working point of the electromagnetic bearing is determined by finite element simulation and analysis, and the key performance parameters, such as current stiffness and displacement stiffness, of the electromagnetic bearing are further analyzed and studied. Finally, cross verification is performed by comparison between the finite element simulation and analysis results and the analytical calculation results. The verification results show that the electromagnetic structure design of the CRDM electromagnetic bearing body is appropriate, and all performance indexes can meet the design requirements.
-
Key words:
- CRDM /
- Electromagnetic bearing /
- Finite element
-
图 6 不同偏置磁动势下的力-电流曲线
Figure 6. Force vs. Current Curves under Different Bias Magnetic Motive Forces (MMFs)
图 9 转子处于平衡位置磁力线分布图及磁通密度云图
Figure 9. Diagram of Magnetic Field Line Distribution and Magnetic Flux Density Cloud When Rotor is in Balance Position
图 11 不同控制电流气隙磁通密度的周向分布
Figure 11. Circumferential Distribution of Air Gap Magnetic Flux Density under Different Control Currents
图 12 工作区气隙磁通密度随控制电流变化曲线
B1—正向气隙磁通密度；B2—负向气隙磁通密度
Figure 12. Variation Curve of Air Gap Magnetic Flux Density with Control Current in Working Area
图 14 转子发生偏移磁力线分布图及磁通密度云图
Figure 14. Diagram of Magnetic Field Line Distribution and Magnetic Flux Density Cloud When Rotor Offset Cccurs
图 16 不同控制电流下力-位移曲线
Figure 16. Force vs. Displacement Curves under Different Control Currents
-
[1] 于天达,杨方亮,陈西南,等. 控制棒驱动机构用同步磁阻电机低速运转平稳性研究[J]. 机械设计与制造工程,2016, 45(12): 91-96. doi: 10.3969/j.issn.2095-509X.2016.12.022 [2] 邓强,彭航,谢细明,等. 基于多学科协同仿真的控制棒驱动机构动力学分析研究[J]. 核动力工程,2019, 40(S2): 78-81. [3] 任正义,李乃安. 大支承力径向电磁轴承结构设计及试验研究[J]. 轴承,2018(4): 39-44. [4] 王念先,胡业发,吴华春,等. 大气隙混合磁悬浮轴承承载力模型的研究[J]. 机械工程学报,2015, 51(1): 153-160. [5] 谢细明,张智峰,李维,等. 基于有限元法的控制棒驱动机构电机密封壳电磁特性研究[J]. 核动力工程,2014, 35(3): 121-124. -
下载:
计量
- 文章访问数: 206
- HTML全文浏览量: 37
- PDF下载量: 24
- 被引次数: 0
