Aiming at the difficulty of good control of LLC resonant converter in lithium battery chemical composition equipment, the sliding mode controller is designed by combining particle swarm algorithm. The traditional PI controller has overshoot phenomenon, and the sliding mode control parameters are difficult to select the optimal value, so combined with the particle swarm algorithm, the function of the controller output and system following error is selected as the target of sliding mode controller parameter optimization, and the appropriate parameters are selected to reduce the recovery time and dithering phenomenon. Simulation experiments show that this method has certain advantages over traditional PI controllers and sliding mode controllers.
To solve the problem of overshoot and slow dynamic response of DAB converter in the classical PID control, the automatic disturbance rejection controller (ADRC) is designed by combining the sparrow search algorithm to replace the original voltage outer loop, optimize the controller parameters, improve the system's fast tracking and disturbance resistance, and the comparison experiment with the traditional PID control and ADRC controller proves that the scheme has better global search ability.
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