Dc Brushless Drive System Suitable for Vehicle Propulsion

ABSTRACT This paper analyses the dynamic performances of a VSI-DC brushless drive system suitable for an electrical vehicle propulsion. The main original part of the work is a computer simulator realized in Matlab-Simulink sofware package, based on the laboratory practical experiments. To monitorize and control the motor parameter variations and influences during the variable frequency motor dynamics, an evaluation board with DSP TMS320C31 based on the dSPACE system is used. With the simulator tool is possible also, to estimate the motor demagnetizing reaction during the starting conditions (at constant torque operation). To minimize the losses of VSI-DCBM drive, the following main goals are proposed: optimum PWM technique to reduce the inverter commutation losses, new fast isolated drivers for the IGBTs of inverter and new programming algorithms for the DSP controlling device.