Modeling the Operation of an Uninsulated DC-DC Converter as a Part of a Propeller Drive of Autonomous Underwater Vehicles

Problems related to modeling an uninsulated DC-DC converter for autonomous underwater vehicles are considered. A dual-circuit automatic speed control system has been developed in Simulink. Performance parameters are determined at start-up, speed reduction and speed increase. The operation of the system is analyzed and shortcomings are revealed, such as overcurrent at start-up and voltage surges when switching the operating mode of the converter. Ways to improve the transition process are identified.