Abstract:
DC-DC power converters play an important role in powering telecom and computing systems. With the speed improvement and cost reduction of digital control, digital controller is becoming a trend for DC-DC converters in addition to existed digital monitoring and management technology. In this thesis, digital control is investigated for DC-DC converters applications.
To deeply understand the whole control systems, DC-DC converter models are investigated based on averaged state-space modeling. Considering Buck DC-DC converter, the thesis takes it as an example for digital control modeling and implementation.
In Chapter 2, unified steady-state DC models and small-signal models are developed for DC-DC buck converters. Based on the models, digital controller design is implemented in Chapter 3. In Chapter 4, Fuzzy logic control is introduced and based on that knowledge Fuzzy controller is designed for the control of buck converter. It should be noted that Fuzzy logic control provides superior performance than conventional PI and PID controller especially during under load transient condition.
Description:
Supervised by
Prof. Dr. Md Ashraf Ul Hoque,
Department Of Electrical And Electronic Engineering (EEE)
Islamic University of Technology (IUT)
Organization of Islamic Cooperation (OIC)
Dhaka, Bangladesh
