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基于现有的谐振型CLLC变换器,采用输入级串联输出并联的多模块高压大容量直流变压器,在低压直流侧提供了多样化的直流负载以及分布式电源的接口.与传统的配电网变压器相比,新型直流变压器有助于高渗透率分布式能源的消纳,提高电能质量.本文分析了单个模块中输出功率、 输出电压与移相角之间的关系,提出一种利用移相角进行功率均衡的控制策略.并在此基础上,提出了能量双向流动的控制策略,从而实现分布式能源柔性接入和高效利用.最后利用PSCAD仿真软件进行了仿真验证.“,”In this paper,input-series-output-parallel multiple modules DC transformer with high voltage and large capaci-ty is used based on the CLLC resonant converter,which provides a variety of ports for the DC load and distributed power supply at low-voltage DC side.Compared with the traditional transformers,the proposed DC transformers is helpful for distributed power consume,and improves the quality of electric energy.In this paper,the relationship be-tween the output power,the phase-shifting angle and output voltage in the single module is analyzed,a control strategy is proposed for the power balancing by using phase-shifting an-gle.In addition,a bidirectional power flow control scheme is presented,which can achieve high efficient and flexible access of distribution resources.In the end,the simulation are carried out based on PSCAD.