| 小型超导电源系统退磁保护回路建模与仿真 |
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| 引用本文： | 邓天白,高格,傅鹏,蒋力,黄连生.小型超导电源系统退磁保护回路建模与仿真[J].强激光与粒子束,2019,31(3):036004-1-036004-5. |
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| 作者姓名： | 邓天白 高格 傅鹏 蒋力 黄连生 |
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| 作者单位： | 1.中国科学院 合肥物质科学研究院 等离子体所 合肥 230031 |
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| 摘 要： | 计算了采用二极管等效电压源模型和等效电阻模型的退磁回路电流响应和二极管功耗，分析了两个模型的特点和差异，在此基础上，为了进一步提高精度，充分考虑了二极管的非线性特性，以实际二极管伏安特性进行曲线拟合建立函数关系式得到二极管非线性模型，代入回路方程并求解。综合对比各模型的仿真结果后，得出采用二极管非线性模型和等效电压源模型能更好地模拟退磁保护响应。
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| 关 键 词： | 超导电源 退磁 失超保护 回路计算 曲线拟合 |
| 收稿时间： | 2018-10-23 |
Modeling and simulation of demagnetization protecting circuits of small-scale superconducting power supply system |
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| Institution: | 1.Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China2.Science Island Branch of Graduate School, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | The accuracy of diode model in the demagnetization protecting circuits has the impact on the results of the circuits calculation design and analysis. This paper presents the calculation of current response and power dissipation of the demagnetization protecting circuits by using the equivalent voltage source model and the equivalent resistor model of diode group firstly. Then a new nonlinear model is proposed based on curve fitting method of current-voltage characteristic of the real diode to overcome the disadvantages of two diode models and improve the accuracy of calculation. Finally, the simulation results proved that the equivalent voltage source model and the nonlinear model have better effects on calculation and analysis. |
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