Scientific paper ID 2031 : 2020/3

The report considers the choice of transistors for a motor regulator in terms of parameters that improve its performance. The parameters of SI MOSFET and SIC MOSFET and their influence on the properties of the inverter are compared. The power losses from conductivity P_con and at switching P_sw, as well as their dependence on the resistance in the on state R_(ds(on)) and the input and output capacitances C_iss C_osson the transistors are considered. We can see the advantages of using SIC MOSFET transistors in inverters for electric vehicles - reducing their size and weight, reducing consumption and increasing mileage. The high temperature limits of SIC transistors give them an advantage when used in inverters of electric vehicles. The high switching frequency reduces the losses of heat dissipation and increases the energy efficiency of inverters using SIC transistors. The high switching frequency reduces heat dissipation losses and increases the energy efficiency of inverters using SIC transistors. The small power losses reduce the heat output and allow the reduction of the dimensions of the radiators of the key elements and thus increase the installation density and reduce the volume and weight of the inverters using silicon carbide transistors.