Research on Accurate Modeling Based on LC Resonant Converter

LC series resonant converters are widely used in power electronics due to their high efficiency, low EMI, and compact design. To optimize their performance, particularly under conditions of load variation and input voltage fluctuations, charge control technology plays a crucial role. Charge control effectively adjusts the converter's operating state, ensuring stable and efficient performance across various operating conditions. This paper primarily discusses charge control methods in LC resonant converters, including conventional switching control techniques and adaptive strategies based on soft switching. The working principle of the LC resonant converter is first analyzed, followed by an introduction of various charge control methods, such as current mode control, flux control, and voltage control. Their advantages and disadvantages in different application scenarios are examined and compared through mathematical modeling and simulation. Finally, the paper outlines future research directions in charge control technologies, focusing on more precise parameter tuning, low-loss operation, and the integration of intelligent control systems.