Deadtime Elimination in a GaN-Based Grid-Connected Differential-Mode Ćuk Inverter.

In this letter, the effect of deadtime in a gallium nitride (GaN) based grid-connected differential-mode Ćuk converter with high-frequency (HF) transformer isolation is analyzed. It is shown that different levels of lower order harmonics appear in the grid current depending on the power factor of an operation. Utilizing the leakage inductance of the HF transformer, the deadtime is suitably elimina...