单相混合级联整流器新型控制策略研究

针对单相混合级联整流器两种功率模块的不同能量传输特性，对电路拓扑的工作原理进行了详细分析，并且基于数学模型，提出了一种新型控制策略。在此基础上，解决了无桥整流器的电流过零点畸变问题。并与传统控制策略进行了对比，重点对直流侧电压波动与无功功率的关系进行了理论分析和数学推导，并进一步对负载突变时的动态响应速度进行了对比分析，仿真验证了理论分析的正确性和控制策略的有效性，为不同应用场合下选取合适的控制策略提供了重要的理论依据。

A novel control strategy of single-phase hybrid cascaded rectifiers

According to the different energy transmission characteristics of the two power modules of the single-phase hybrid cascade rectifier,the working principle of the circuit topology is analyzed in detail,and based on the mathematical model,and a new control strategy is proposed.On this basis,the problem of current zero-crossing distortion of the bridgeless rectifier is solved.And the proposed strategy is 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 the dynamic response speed under sudden change of load is further analyzed.Correctness of the theoretical analysis and effectiveness of the control strategy are verified in the simulation,the study can provide theoretical basis for selecting the appropriate control strategy in different application scenarios.