Optimal Stability of Brushless DC Motor System Based on Multilevel Inverter

Abstract

Because it is simple to build, inexpensive, low-maintenance, efficient, and has a high output power, a brushless DC (BLDC) motor used in many applications with power systems. An inverter powers the BLDC motor. This work presents the proposed design and full simulation and analysis for a three-phase level inverter to apply the high performance of BLDC motor. Three 12-pulse three-level vector output bridges switched the IGBT's three-level transformers, and a separate three-phase pulse width modulation (DPWM) generator powered the multi-level inverter. To resolve low electromagnetic interference and harmonic distortion, DPWM with a three-level inverter is used. The three-phase voltage technique using variations in phase, frequency, and amplitude produced outstanding performance, making the proposed design very helpful in many applications, particularly those that call for high voltage. The suggested model follows the intended reference speed signal in a variety of stages using a PID controller. Simulating the system design was done with Matlab/Simulink with steady state and transient reactions, satisfactory results and strong control performance are obtained. The proposed model's results are compared to those of the DC-link variable control. The proposed model produces more consistent and trustworthy results.