Carrier cascading modulation method based on cascaded constant current source topology

The invention provides a cascaded constant current source topology-based carrier cascade modulation method, which comprises the following steps of: continuously arranging N triangular waves with the same amplitude and frequency up and down in the longitudinal axis direction to serve as carriers, and comparing the carriers with the same modulation wave to obtain a switching signal of each cascaded module switching tube of a cascaded topology; and each cascade module is controlled to output current according to the modulated time sequence, so that the stability of the output current of the cascade type constant-current power supply is realized. According to the modulation method, each stage of cascade module is in an on-off state in only a part of time in the whole power supply operation time, and is in an on-state in other time, so that the switching loss is reduced, and the power supply efficiency is improved. 本发明提供一种基于级联型恒流源拓扑的载波层叠调制方法，使用N个幅值和频率相同的三角波在纵轴方向上下连续排列作为载波，与同一调制波进行比较，得到级联型拓扑各个级联模块开关管的开关信号，控制各级联模块按调