推导了串联谐振充电电源不同工作模式下的电流、电压计算公式,给出了计算不同周期电流、电压值的递推公式;应用递推公式说明了这种电源的脉动恒流充电特性;给出了负载电容不完全放电情况下电源参数的计算方法.在负载电容完全放电的情况下,电源的平均输出功率为最大输出功率的一半,在负载电容电压基本维持恒定的情况下,电源平均输出功率与最大输出功率相等;最后给出了一台为Tesla型加速器初级储能电容充电的谐振电源的设计实例,电源的实测结果和计算结果一致,在100Hz重复频率下运行稳定可靠.

This paper firstly derives expressions of current and voltage at various work modes for the series resonant charging power supply, gives recursion formulas calculating the value of current and voltage at various periods;secondly, utilizing recursion formulas, it makes out that the power supply characterizes pulse constant current charging;thirdly, this paper calculates the parameters of the power supply when capacitor-load incompletely discharge, the power supply provides half the maximum output when capacitor-load completely discharge, and provides maximum output to maintain the voltage of capacitor-load;at last, describes a 100Hz steady operation power supply for accelerator utilizing Tesla transformer, measured results and calculated results are well consistent.