Abstract:
Most power electronic systems, the instantaneous input and output power vary by time and are not exactly identical with each other. Hence providing a good match between them is a complicated task to deal with if not impossible. A DC-to-DC converter is a device that accepts a DC input voltage and produces a DC output voltage. Typically the output produced is at a different voltage level than the input. The aim of this study is to develop a high-efficiency converter with two input power sources for a distributed power generation mechanism. There are different type of methods to get high voltage and efficiency of a dc-dc boost converter such as interleaving, switch capacitor based, SMPS etc. The proposed converter can boost the varied voltages of different power sources in the sense of hybrid power supply to a stable output dc voltage for the load demand. According to various situations, the operational states of the proposed converter can be divided into two states including a single power supply and a dual power supply. In the dual power-supply state, the input circuits connected in series together with the designed pulse width modulation can greatly reduce the conduction loss of the switches.
Description:
We thank and praise Almighty Allah for giving us the ability to complete this thesis successfully.
We would like to express our gratitude and deep appreciation to our supervisor, Dr. Mohammad Jahangir Alam, Professor, Department of Electrical and Electronic Engineering, BUET, for his helpful suggestions, encouragement, guidance and individual assistance and constant supervision that have enabled us to finish this work.
We are grateful to the Dr. Mohammad Ali, Professor, Department of Electrical and Electronic Engineering, BUET. We would like to convey thanks to faculty of the department for their support during the work.
In addition we would like to thank Mr. Jannatul Ferdaous Rubel, Lecturer Uttara Universit for his regular support and required information regarding the subject. We also acknowledge the help of individuals who contributed to the success completion of the work.
Last but not the least, it would be unjust if we do not mention about the contribution of our family members who have always encouraged us and rendered their supports to continue our study and thesis work.
