【摘要】 为了提升混合储能系统直流微网的电压稳定性，研究构建了混合储能系统及变换器的等效模型。此外，设计了混合储能变换器，并构建了基于新误差引入和模糊算法自适应调整参数的线性自抗扰技术，以更好地对该变换器进行控制，提升电压的稳定性。结果显示，引入新误差的改进线性自抗扰技术的幅值最大值为-59.30 dB,和其改进前相比提升了11.83 dB。在光伏扰动和负荷扰动工况下，最终改进线性自抗扰技术对应的直流母线电压最大值分别为418.23 V和404.01 V,母线电压波动显著降低。可见，本研究设计的变换器及其对应控制策略具有较好的性能，能够对电压进行有效控制，为清洁能源的高效利用提供技术支持。更多还原

【Abstract】 In order to improve the stability of the DC microgrid voltage using a hybrid energy storage system, an equivalent model of the hybrid energy storage system and converter was constructed. In addition, a hybrid energy storage converter was designed and a linear active disturbance rejection technique based on new error introduction and fuzzy algorithm adaptive parameter adjustment was constructed to better control the converter and improve voltage stability. The results show that the maximum amplitude of the improved linear active disturbance rejection technique with new errors introduction is-59.30 dB, which is 11.83 dB higher than before. Under the photovoltaic and load disturbances, the maximum DC bus voltage corresponding to the improved linear active disturbance rejection technique is 418.23 V and 404.01 V, respectively, and the bus voltage fluctuation is significantly reduced. It can be seen that the performance of the system can be improved by selecting and designing converters and their corresponding control strategies, which can control the voltage and provide technical support for the efficient utilization of clean energy.更多还原