For absorbing such distribution energy as photovolitaic

electric vehicle

energy storage battery and achieving optimization distribution of power of distribution network

a kind of AC and DC intelligent distribution network structure based on the power electronic flexible device is proposed. The proposed structure adopts current source converter（CSC）to connect different AC distribution network and AC distribution energy. The DC-DC converter with current source converter-voltage source converter hybrid structure is adopted to achieve effective grid connection of distribution DC energy. The mathematical model of CSC and hybrid converter are analyzed. A comprehensive control strategy which is suitable for network structure of AC-DC intelligent distribution network is proposed and the operation of unit power factor of all converters in the network structure is achieved. The simulation model AC-DC intelligent distribution network based on the flexible device is set up in Matlab/Simulink simulation software. The simulation results show that the proposed control strategy can be able to achieve operation of unit power factor of all converter.