Design of Bidirectional DC-DC Converter Control Based on Arrange the Transition Process

摘要

As the demand for electricity in automobiles, communications, computer systems, hybrid vehicle systems, and aerospace systems continues to increase, bidirectional DC-DC converters are widely used in these fields. The traditional two-way DC-DC converter adopts PID control. However, in the initial stage of the transition process, due to large error, the control force is too large, and overshoot is likely to occur. A new bidirectional DC-DC converter control method based on the arrangement transition process is designed for the robustness and stability of the energy storage system. After obtaining the second-order linear model of the converter by the identification method, the PID controller and the PID controller that arranges the transition process are used to simulate and experiment the voltage and current control of the bidirectional DC-DC converter. The experimental results show that the transition process can eliminate the output overshoot during the initial operation of the converter, and to some extent reduce the contradiction between the system overshoot and the adjustment time.