Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
FINITE VOLUME METHOD APPLIED TO A NEW GEOMETRY FOR SUBSEA FREQUENCY INVERTER ENCLOSURES
Submission Author:
Lucas Militão , SC
Co-Authors:
Lucas Militão, Diego dos Santos, Douglas Machado, Alexandre Kupka da Silva, Jader Riso Barbosa Jr.
Presenter: Lucas Militão
doi://10.26678/ABCM.COBEM2019.COB2019-0692
Abstract
Frequency inverters are being used in a new type of depth sea installation: subsea electrical grids. One major challenge in such location is to maintain the temperature of electronic components below specified limits. The thermal management of such devices is performed throughout the use of different types of thermal models, according to the literature: analytical, numerical or thermal network model. The present work proposes the use of a finite volume method, with the support of a thermal network model (representing the entire cooling system of the subsea frequency inverter), to accurately predict the temperature distribution in the vicinity of the electronic components of the inverter circuit. An experimental apparatus was designed and built using a genetic algorithm to determine the dimensions of the system for maximum performance. External water temperatures from 10 to 25 ºC were considered, and total power dissipated from 200 to 600 W. The experimental results presented temperatures in the vicinity of the electronic components below the theoretical limits, for all test points. A maximum deviation of 7,2 ºC was obtained when comparing the numerical with the experimental data, for the measuring points close to the electronic components.
Keywords
Finite Volume Method., Natural Convection, Subsea Frequency Inverter Enclosure
