In this letter, the effect of deadtime in a gallium nitride (GaN) based grid-connected differential-mode _uk 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 eliminated to result in an improved grid-current total harmonic distortion (THD). Experimental results support the proposed solution.

中文翻译：

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GaN 并网差模逆变器中的死区时间消除


在这封信中，分析了具有高频 (HF) 变压器隔离的氮化镓 (GaN) 基并网差模 _uk 转换器中死区时间的影响。结果表明，根据运行的功率因数，电网电流中会出现不同级别的低次谐波。利用高频变压器的漏感，适当消除死区时间，从而改善电网电流总谐波失真（THD）。实验结果支持所提出的解决方案。