Research on Active Disturbance Rejection Control Method for Bidirectional DC-DC Converter Based on Immune Algorithm

In a specific multi-source disturbance system such as photovoltaic energy storage, the photovoltaic output power change and load mutation may have a great impact on the DC bus voltage, then affect the system stable operation. In order to restrain the DC bus voltage fluctuation, a novel active disturbance rejection control method for bidirectional DC-DC converter based on immune algorithm is proposed in this paper. The immune algorithm is studied on the basis of the immune response system, and then the algorithm realization is analyzed. The immune algorithm is introduced into the active disturbance rejection controller, and the parameters of the expansion state observer and nonlinear feedback control law all can be adjusted online by using the immune algorithm, and the dynamic performance of the system under the condition of multi-source disturbances has been further improved. The experimental results verify the effectiveness of the active disturbance rejection control method for bidirectional DC-DC converter based on immune algorithm.