A Partial Power Converter Based on Hybrid Control L-LLC

This proposes an L-LLC converter with partial power processing.By employing a hybrid control strategy that combines primary-side phase-shifting with frequency modulation, the L-LLC resonant converter reduces the variation in switching frequency, resulting in improved overall efficiency. The working principle and operational characteristics of the partial power processing L-LLC converter based on this hybrid control method is analyzed in detail. A 4kW prototype was used to verify the correctness and reliability of the theoretical analysis.