Abstract:To satisfy the requirements of high power density for aeronautical static inverters, the hybrid cascaded multilevel inverter scheme is proposed because of its advantage in reducing the weight and the volume of the output filter. Meanwhile, it can also ensure the good output characteristic and reduce the electromagnetic interference. With the structure of 2H-bridges, the traditional hybrid modulation and the power intrusion problem are analyzed,and the relationship between the reverse power size and main parameters is obtained. According to the power intrusion problem, the modulation method of single multilevel level-shifted carrier-based modulation is adopted, and the modulation process and the output characteristics are analyzed. Finally, the control strategy is verified by simulation.