This paper presents a unified modulation technique based on common mode signal injection for single-phase full-bridge inverters. This modulation technology can easily realize various carrier-based PWM modulations, such as continuous unipolar modulation, discontinuous modulation, and hybrid modulation, by selecting different common mode signal, and can need to be deleted quickly realize the seamless change of several modulation methods. Finally, the correctness and feasibility of the proposed modulation method have been verified by simulation and experimental results.
 

Modulation, Full-bridge inverter, Common mode signal