Thermal Analysis and Heat Dissipation Optimization of a Marine Electromagnetic Emission Principle Prototype

In order to reduce the working temperature inside the underwater compartment of the marine electromagnetic launching system, to ensure the stable work of the high-power power electronic devices in the launching circuit, and to enhance the reliability of the marine electromagnetic detection system in the fields of exploring the seabed geological structure, searching for the seabed mineral resources, monitoring the seabed environmental changes, and assisting the seabed construction project, etc., this paper carries out the power calculation through the actual technical indexes, and establishes an equivalent thermal resistance model. The thermal resistance method is used for analysis; the three-dimensional transmitter model is established by COMSOL software and finite element analysis is carried out to get the heat dissipation of the power electronic devices, and then the forced air-cooled heat dissipation scheme is designed and simulated to optimize the working heat generation of the transmitter. This method can be applied to engineering practice, can effectively simulate the heat generation of high-power devices, and carry out targeted heat dissipation design, so as to improve the thermal stability of the marine electromagnetic detection system, to ensure the long-term stable operation of the system.