PWM MODULATION AND CONTROL STRATEGY FOR LLC-DCX CONVERTER TO ACHIEVE BIDIRECTIONAL POWER FLOW IN FACING WITH RESONANT PARAMETERS VARIATION

The LLC resonant converter can be used as a dc-dc transformer (DCX) to provide isolation and fixed voltage transfer ratio.For applications requiring bidirectional power transmission, this paper proposes a PWM modulation and control strategy to achieve naturally bidirectional power flow for LLC-DCX, even in the case when the resonant Glass Chiller p