<p>LC series resonant converters are widely used in high-repetition-rate and high-power pulse systems such as electromagnetic launchers. The large current ripple during their operation can affect the power grid and the load. This issue can be optimized using the interleaved parallel structure. This paper constructs a mathematical model for the input and output currents of the interleaved parallel LC series resonant converter, researches the influence of the interleaved parallel quantity and switching frequency on the input and output current ripple, and concludes that increasing the parallel quantity and the switching frequency can effectively reduce current ripple. However, at high frequencies and high parallel quantities, the effect is no longer obvious. This is verified through a simulation circuit model in MATLAB/Simulink. In the model, when the parallel quantity is 8 and the switching frequency is 16&#xa0;kHz, the ripple ratio remains below 10%. An experimental platform was set up to verify the impact of the interleaved parallel quantity and frequency on current ripple. The research findings of this paper can serve as a design guide for interleaved parallel LC series resonant converters.</p>