Simulation of Interleaved Buck Converter Fed PMBLDC Drive System with Input Disturbance

This paper proposes an interleaved buck converter (IBC) with input disturbance to feed a low voltage Permanent Magnet Brushless DC Motor (PMBLDC) drive. PMBLDC is one of the best electrical drives that have increasing popularity, due to their high efficiency, reliability, good dynamic response and very low maintenance. This makes the interest of simulating an ideal PMBLDC motor and its associated Drive System. In this work an IBC is used to control the PMBLDC motor. It has three active switches which are connected in series and a coupling capacitor is employed in the power path. It has the advantages of low switching losses, improved step down conversion ratio, higher efficiency, higher switching frequency, low inductor power loss and reduced ripple current. A disturbance circuit is introduced in the input stage of the interleaved buck converter, which analysis the performance of the PMBLDC at variations in the input. The simulation of the interleaved buck converter fed PMBLDC motor drive system with input disturbance circuit is done using the software package MATLAB/SIMULINK. The features, operation and simulation results of the IBC fed PMBLDC drive system with input disturbance results are presented in this paper to verify the theoretical analysis.