电容放电式脉冲励磁电源研究
Pulse constant-current source based on capacitor discharge
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摘要: 针对大型直线感应加速器单次工作的特点，研制了一种电容放电式脉冲励磁电源。该电源利用电容器的储能特性，取代常规电源的变压整流滤波部分，先对其以小电流恒流充电，然后再以大电流恒流放电来获得直线感应加速器励磁电流。对这种电源进行了理论分析和模拟计算，模拟结果与实验结果基本一致。实验结果表明：这种电源能够脉冲工作，同时输入功率大幅度降低，在输出电流500 A，持续时间0.3 s时，输入功率400 W，输出功率25 kW，电流稳定度0.2%， 谐波小， 电流纹波小，所用电容器100块左右(33 mF)，经济上也可承受，是一种非常适合直线感应加速器的励磁电源。Abstract: A pulse constant-current source based on capacitor discharge was developed for LIA accelerator. Theoretic analysis and simulation for this source was proceeded. Numerical simulation has consistent result with experiment. The experiment result shows that this kind of source can work in pulse and its input power has reduced greatly. When the output current is 500 A and current duration is 0.3 s, this source has an output current of 0.2%, input power of 400 W and output power of 25 kW. This kind of source is very suitable for LIA.
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Key words:
- lia /
- pulse constant-current source /
- capacitor discharge /
- serial regulation
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