Designing efficient three phasebrushless dc motor control systems

This thesis presents a mathematical model of three-phase BLDC motor control systems.After the mathematical model open loop system is obtained, it islinearized and a linear approximated model of the plant is obtained. The Linearization enables the synthesis of controllers with high performance, which are realized using the root locus plot of the approximated plant. In the thesis, 3 different controllers are obtained. Two of the controllers are conventional Proportional and Proportional and Integral controllers. The third controller is a FLC controller with two different rule-base settings with sliding mode control strategy. The dynamical characteristics and performance indices of these synthesized controllers are compared as the final step.