Research for SVPWM Control Method of Brush-less DC Motor Using Z-source Converter

Abstract

A novel brush-less DC motor SVPWM control method based on Z-source converter is proposed in this paper. The proposed method can increase speed range by utilizing the shoot-through state to boost the DC voltage and also has the advantage of high stability, small torque ripple, high efficiency and low noise, effectively solving the problem of small speed range, large torque ripple and poor stability of existing control system. A novel mathematical model is also derived for motor control. With the algorithm simulation advantage of MATLAB and the circuit structure simulation advantage of PSIM, The united simulation results of MATLAB and PSIM are analyzed in detail.