In recent years

the issue of environmental pollution has become increasingly prominent and new energy application has developed greatly. The creation of intelligent

efficient

sustainable development of the multi-energy complementary park is the trend of development. DC distribution gateway converter is an important part of the multi-energy complementary park. In this paper

a kind of DC distribution network gateway converter is designed by based on NPP topology structure

reactor-capacitor-reactor（LCL）serial and shunt filtering system and SPVWM modulation system by way of analyzing the structure of DC distribution network and topology structure of converter at different scenarios. The working principle

parameter calculation and realization method of this converter are introduced. Finally

the effectiveness to achieve the method is verified by simulation test closed-loop test of control and protection system.