Abstract:

In this study, it is aimed to redesign at a voltage below the dangerous limit (96 V) instead of a brushless direct current motor design with internal rotor at high operating voltage (300 V), which provides high power, high efficiency and high torque features for hybrid vehicles to be used in parallel structure. These design studies and finite element analysis have been done with ANSYS Electronics Dekstop software. Using the data of a light commercial vehicle selected as the test vehicle, the parameters (torque, power, speed) that will be needed during the application were calculated and motor designs were made taking these parameters into consideration. Electric motors used in electric and hybrid vehicles are generally produced at high operating voltages such as 400 V in order to meet the high power and torque requirement at high speeds. While it is beneficial that the current value passing through the line is low depending on the power drawn in the electric motors and drivers at high voltages, it causes the cost of the components used in the development of the motor driver and the risk of electric shock to increase. With this study, it was ensured that the component costs in the driver part of the brushless direct current motor to be produced were reduced and the operating voltages of the designed high voltage motor were reduced with the aim of keeping the DC bus voltage inside the vehicle below the dangerous lower limit.

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