Loss Analysis And Thermal Design Of Mid-Voltage & Mine-Used Inverter Main Circuit

With the rapid development of the power electronic technology, the heat emission problem of power devices become more and more important. As a result of the AC Adjusting Speed Technology, the inverter, which is one of important methods that are used to save energy and reduce consumption, is used more and more in the industrial technology field. The electronic components used in the high power inverter have the similar thermal design requirements. Ascertaining the power losses of inverter's main circuit and heat dissipation design not only can to be used to guarantee the inverter's normal operation, but also the main way to increase the inverter's service life.The power dissipation of the 1140V/80KW M/D-VOLTAGE MINE-USED power inverter's main circuit is analyzed in this thesis. The linearity approximative method onto the IGBT module's power losses is introduced. Heat path between the heat source of power device and external environment are analyzed, and according to the heat-resistance method, a water cooling radiator is designed. Further research to the cooling radiator applying the special thermal analysis software named as Icepak is given in this thesis, and the effect of different parameters on heat sink is analyzed, that are helpful for the cooling plate's optimization design.The research results suggest that the power dissipation analysis of the high power inverter main circuit is authentic, and also suggest that the cooling plate that is designed in this thesis can satisfy the heat dissipation of the inverter. The main circuit's heat emission problem in the high power inverter can be dealt effectively through design.