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高压电器  2014 

螺旋线型空心变压器充电特性实验研究

, PP. 109-114

Keywords: 空心变压器,高压脉冲源,充电特性,晶闸管

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Abstract:

利用脉冲变压器与陡化开关结合的方式,可以更容易地构造出在紧凑性、稳定性及寿命等方面性能优良的高压脉冲源。相比于铁心式变压器,空心螺旋线型变压器不含铁心,通过初次级绕组进行能量耦合,因而在体积、重量和峰值输出变比等方面更具优势。笔者对空心变压器的基本理论进行了分析,研制了设计变比3660,带载电容100pF,输出电压峰值为150.0kV的油浸式变压器样机。通过初级和次级电容构成谐振充电回路,并采用快速晶闸管作为低压侧放电控制开关,对空心螺旋线型变压器的充电特性进行了实验研究。实验结果表明,空心变压器样机在初级电容为6.0μF时,输出变比可达到150左右,增大初级电容有利于增大输出变比但能量传输效率反而会下降,实际设计时要综合考虑变比与效率。

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