Linear Active Disturbance Rejection Control of an LLC Converter for On-Board Chargers

This paper proposes a Linear Active Disturbance Rejection Control (LADRC) system for a full-bridge LLC converter in on-board chargers for battery electric vehicles. The implementation of LADRC results in high-precision tracking and robustness, providing an effective solution to performance issues initiated by unexpected disturbances. The study underscores the inherent advantages of employing LADRC, including its high operational efficiency and compactness of design. Utilization of LADRC eliminates the need for redesigns even when confronted with modeling inaccuracies or unpredictable disturbances, thus providing enhanced reliability and stability. Drawing upon the advantageous characteristics of LADRC, a control system has been designed for on-board chargers in low-voltage battery electric vehicles (BEVs). This integration results in an efficient, resilient, and compact charging solution.