Now showing items 1-18 of 18

    • AC sine wave generation by using SPWM inverter 

      Islam, Md. Sakibul; Nuzhat, Farah; Nadim, Md. Nazmul Hoque (BRAC University, 2012-04-11)
      This paper contains the analysis of basic inverter topologies. pulse width modulation inverter has been briefly explained by giving operational methods and simulated circuits. Different methods of inverter have also being ...
    • Analysis of power converters and smart power factor correction 

      Noor, Khondaker Tasrif; Islam, Md. Samiul; Fuad, Fatin (BRAC University, 2016-08)
      Converter circuits are one kind of power electronics circuit which allows us to convert direct current voltage from one level into another level. With this pace of development in power electronics field and industry, now ...
    • Analysis of Rectifier circuits with power factor correction 

      Hassan, M. M. Emran; Sultana, Afrin; Akther, Sunjida (BRAC University, 2014-01)
      Power Factor, the ratio between the real power and the apparent power forms a very essential parameter in power system. It is indicative of how effectively the real power of the system has been utilized. With rapid ...
    • Comparative study on DC-DC Converters 

      Tushar, Mehedi Hasan (BRAC University, 2012)
    • Design of a single phase AC-AC converter 

      Khan, Md. Imtiaz; Ahad, Abdul; Islam, Kamrul (BRAC University, 2012-04-12)
      An AC-AC voltage controller is a converter which controls the voltage, current and average power delivered to an AC load from an AC source. They are used in practical circuits like light dimmer circuits, speed controls of ...
    • Design of a single phase switch mode AC-DC Converter 

      Surjo, Md. Rafiqur Rahman; Amin, Md. Afsarul (BRAC University, 2011-12)
    • Designing a radio frequency controlled biomimetic flying bird 

      Adnan, Nahid Hasan; Alam, Mohammad Talha Talkin (BRAC University, 2014-08)
      The present world has been reached to a stage where most of the sophisticated and sensitive tasks are mostly done by artificial hands. Drones, robots have been replaced the place of human with their uncompromised accuracy ...
    • A detailed analysis on BUCK converter in different conduction mode 

      Shakil, Md Shaidul Islam (BRAC University, 2018)
      A DC-DC BUCK Converter is a basic type of switch mode power converter. It has variety of application. It behaves differently in different conduction mode. In this thesis a buck converter is designed first considering the ...
    • Implementation of microstepping in stepper motor using ATmega32 microcontroller 

      Akash, Ishtiaq Hafiz (BRAC University, 2018-08)
      Unlike other motors, stepper motor cannot give a continuous rotation. Hence, stepper motor is different from other motors. Stepper motor is a brushless DC motor that divides its full rotation into a number of equal steps, ...
    • Implementation of microstepping in stepper motor using ATmega32 microcontroller 

      Akash, Ishtiaq Hafiz (BRAC University, 2018-08)
      Unlike other motors, stepper motor cannot give a continuous rotation. Hence, stepper motor is different from other motors. Stepper motor is a brushless DC motor that divides its full rotation into a number of equal steps, ...
    • Improvement of power quality of CFL bulbs using active power factor correction circuit 

      Modak, Sudipta; Das, Tapas Kumar; Nabi, Mohammad Rafiqun (BRAC University, 2014-12)
      Power electronics is a means of controlling/processing in an appropriate way that is suitable for the load. Power conditioning is done to ensure higher efficiency and power density. Improved efficiency can reduce emission ...
    • Modeling UPS and enhancing the capability by integrating renewable sources 

      Mojumder, Arijit; Rahat, Md. Raisul Haque; Khan, MD. Abdur Rahim; Ahamed, Ajaz (BRAC University, 2014-12)
      Power outage or power line disturbances have detrimental effect on the operation of critical loads like computer controlling important process or medical equipment. The study of power line disturbances were done in the ...
    • A modular one-switch three-phase Single Ended Primary Inductor (SEPIC) rectifier 

      Bashar, Khandaker Lubaba; Islam, Samia M.Naeemul; Choudhury, Mohammad Ali A.Shoukat; Abedin, Amina Hasan; Uddin, Mohammad Nasir (© 2017 IEEE, 2017-04-26)
      An input switch based modular Single Ended Primary Inductor (SEPIC) three phase AC-DC converter is proposed in this paper. The proposed rectifier has the advantage of step-up/down voltage gain with boost input stage. Input ...
    • State space modeling of a BUCK converter and designing a controller 

      Ahmed, Shaik Raju; Noor, Nusrat Jahan; Mostafa, Sumaiya (BRAC Univeristy, 2017)
      Modeling is the mathematical representation of a circuit. For mathematical representation knowledge of state space modeling or state space representation is required. For state space representation, it is necessary to ...
    • Study on designing the feedback loop control of buck converter 

      Khan, Md. Abdul Mobin; Rahman, Asifur; Hoque, Md. Rezuanul (BRAC University, 2016)
      Direct current to direct current (DC-DC) converters are power electronics circuits that converts direct current (DC) voltage input from one level to another. DC-DC converters are also known as switching converters, switching ...
    • Three phase one switch modular-boost/vienna power factor corrected (PFC) rectifier 

      Uddin, Mohammad Nasir; Abedin, Amina Hasan; Bashar, Khandaker Lubaba; Islam, Samia M.Naeemul; Choudhury, Mohammad Ali A.Shoukat (© 2017 IEEE, 2017-04-26)
      The power conversion circuit of a three phase Vienna or Modular-Boost switching power factor corrected (PFC) rectifier uses three controlled switches, eighteen diodes and two output split capacitors. Three PFC controller ...
    • Two switch three phase ĆUK regulated rectifier 

      Abedin, Amina Hasan; Choudhury, Mohammad Ali A.Shoukat (© 2016 IEEE, 2016-11-22)
      A three phase Vienna/Modular-Boost rectifier provides only boost voltage gain regulation using three single phase PFC controller to achieve power factor correction and input current waveform improvement. A Buck-Boost voltage ...
    • Use of bidirectional DC-DC Buck Boost Converter in Distributed Energy Resources (DER) 

      Tajwar, Fahim; Lethe, Tasneem Nawreen; Khan, Shahriar Usman; Sardar, Atiqur Rahman (BARC University, 2017-12)
      Dc-dc converter is widely used in power electronics. It is used in different kind of Distributed energy sources such as solar cell, hybrid electric vehicle. For interfacing current of Micro-gird with main power grid we ...