As the power of hydroelectric power generation or photovoltaic power generation systems are frequently fluctuated and poor stability, a multi-port converter and its energy cooperative control scheme are proposed for new energy access. Firstly, the common topology of multi-port converters are compared and analyzed, and one of multi-port converters is selected. Secondly, in order to realize the energy interaction, a double control strategy is proposed, that is, the upper layer that is multi model control in coordination, the lower layer that is the control in independent, which can realize the efficient allocation of multiple source and improve the reliability of the system; Finally, the simulation results show that the two-layer control strategy can effectively execute energy coordination and scheduling, which can alleviate the seasonal overload problem in the region vividly. So, the dc bus voltage and output power can be well controlled with strong adaptability and high reliability.