Hybrid control method and system for dual-active full-bridge DC-DC converter

The invention discloses a hybrid control method and system for a dual-active full-bridge DC-DC converter, and the method comprises the steps: firstly calculating a feed-forward phase-shift ratio of the dual-active full-bridge DC-DC converter, obtaining a feedback phase-shift ratio through the prediction control of a disturbance model and an estimator model, and then determining the phase-shift ratio between two H bridges of the dual-active full-bridge DC-DC converter based on the feed-forward phase-shift ratio and the feedback phase-shift ratio, thereby achieving the hybrid control of the dual-active full-bridge DC-DC converter. And then performing phase shift control on the dual-active full-bridge DC-DC converter according to the phase shift between the bridges so as to adjust the transmission power of the dual-active full-bridge DC-DC converter. The method not only retains the advantages of model prediction, but also enables the steady-state error of model prediction to be better inhibited through precise m