【摘要】 利用可再生能源发电进行电解水制氢是实现可再生能源的100%消纳和氢气全绿制取的重要途经。作为衔接可再生能源发电母线和质子交换膜电解槽的中间环节，单个制氢电源功率等级低，不能满足大规模可再生能源消纳和大功率制氢，因此需采用制氢电源的模块化并联方法，但模块化并联时存在模块间不均流问题。针对多个制氢电源并联时的不均流问题，提出基于三相交错并联LLC结构的制氢电源并联方案。首先，推导了多个制氢电源并联等效电路，从阻抗角度入手，得到模块间谐振参数差异是不均流的主要原因。然后，利用虚拟阻抗调整等效阻抗，从而实现模块间均流。最后，搭建仿真模型和一台两个6 kW模块化实验样机，验证了所提并联方案的合理性和可行性。更多还原

【Abstract】 Hydrogen production from electrolytic water based on renewable energy generation is an important way to achieve 100%consumption of renewable energy and preparation of green hydrogen. As the intermediate link between renewable energy generation bus and proton exchange membrane electrolyzer, a single hydrogen production power supply has a low power level and cannot achieve largescale consumption of renewable energy and high power hydrogen production. Therefore, the modular parallel method of hydrogen production power supply needs to be adopted, but the problem of current imbalance between modules exists in the modular parallel. In order to solve the problem of current imbalance, a parallel scheme of hydrogen production power supply based on three-phase staggered parallel LLC structure is proposed. Firstly, multiple parallel equivalent circuits of hydrogen production power supply are derived. From the point of impedance, it is found that the difference of resonant parameters between modules is the main reason for the current imbalance. Then, the virtual impedance is used to adjust the equivalent impedance, so that the current is balanced between modules.Finally, a simulation model and two 6 kW modular experimental prototypes are built to verify the rationality and feasibility of the proposed parallel scheme.更多还原