关键词: 混合级联, 电流过零点畸变, 直流电压波动, 动态响应速度

Abstract: According to the diversification and stability of power consumption of coal mining face equipment, the working principle of the circuit topology is analyzed in detail according to the different energy transmission characteristics of the two power modules of the single-phase hybrid cascade rectifier, and based on the mathematical model, the paper proposes A new type of control strategy. On this basis, the problem of current zero-crossing distortion of the bridgeless rectifier is solved. And compared with the traditional control strategy, focusing on the theoretical analysis and mathematical derivation of the relationship between DC side voltage fluctuation and reactive power, and further comparing and analyzing the dynamic response speed when the load suddenly changes, and the simulation verifies the theoretical analysis. The correctness and effectiveness of the control strategy provide an important theoretical basis for selecting the appropriate control strategy in different applications.