http://hdl.handle.net/10361/7 2013-05-25T03:07:04Z 2013-05-25T03:07:04Z Rahman, Shusmita Oni, Nadia Sultana Masud, Quazi Abdullah Ibn http://hdl.handle.net/10361/2389 2013-05-09T05:55:48Z 2012-12-15T00:00:00Z

Design of a charge controller circuit with Maximum Power Point Tracker (MPPT) for Photovoltaic system Rahman, Shusmita; Oni, Nadia Sultana; Masud, Quazi Abdullah Ibn This thesis, aim to design and simulation of a simple but effective charge controller with maximum power point tracker for photovoltaic system. It provides theoretical studies of photovoltaic systems and modeling techniques using equivalent electric circuits. As, the system employs the maximum power point tracker (MPPT), it is consists of various MPPT algorithms and control methods. P-Spice and MATLAB simulations verify the DC-DC converter design and hardware implementation. The results validate that MPPT can significantly increase the efficiency and the performance of PV. This thesis is submitted in a partial fulfillment of the requirement for the degree of Bachelor of Science in Electrical and Electronic Engineering.

2012-12-15T00:00:00Z Yasmin, Farzana Samad, Sazeed Mohammad Ibne Haque, Md. Safat Samir http://hdl.handle.net/10361/2384 2013-05-09T05:55:43Z 2012-12-13T00:00:00Z

Reliability analysis of Bangladesh power system Yasmin, Farzana; Samad, Sazeed Mohammad Ibne; Haque, Md. Safat Samir This paper presents reliability analysis techniques basically the “Recursive Technique” which are applied in distribution system planning studies and operation. Reliability of distribution systems is an important issue in power engineering for both utilities and customers. Reliability is a key issue in the design and operation of electric power distribution systems and load. Reliability analysis of distribution systems has been the subject of many recent papers and the modeling and evaluation techniques have improved considerably. This thesis is submitted in a partial fulfillment of the requirement for the degree of Bachelor of Science in Electrical and Electronic Engineering.

2012-12-13T00:00:00Z Rahman, Md. Mashiur Nahid, Md. Kudrat Ullah http://hdl.handle.net/10361/2383 2013-05-09T05:55:38Z 2012-12-15T00:00:00Z

2nd Generation car security system (2GCSS) : Embedded car security system Rahman, Md. Mashiur; Nahid, Md. Kudrat Ullah In this era of technology security and maintenance has become a big question in all over the world. Wherever a developed technology is used, the question of its security and maintenance also arises. If any precious thing is lost the first thing comes in our mind is where it‟s right now. The solution can be given by a Global positioning system (GPS).Another thing which comes in our mind is the maintenance of that system. We can use sonar, alarms, and switches in various ways so that we can protect our valuable system. The world has so far experienced many kinds of modules for security and maintenance. As such we have implemented modern technologies in this security system and added all the features in a module which is more reliable and flexible while use. We have implemented the following functions in our thesis - • Real time Vehicle tracking using GPS. • Engine On/off via SMS using the GSM technology • Robust Jumper alert and warning alarm • Blind point detection using SONAR. • Parking Assistant • Passenger counter and data log This thesis is submitted in a partial fulfillment of the requirement for the degree of Bachelor of Science in Electrical and Electronic Engineering.

2012-12-15T00:00:00Z Ahmed, Sanjana Tasneem, Nisat Rahman, Md. Saidur Zenan, Ahmed Hosne http://hdl.handle.net/10361/2382 2013-05-09T05:55:32Z 2012-12-01T00:00:00Z

Solar powered traffic sensitive automated LED street lighting system Ahmed, Sanjana; Tasneem, Nisat; Rahman, Md. Saidur; Zenan, Ahmed Hosne Production and use of photovoltaic cells to generate electricity is an increasingly popular resource solution in Bangladesh currently. The focus of this project is to make the most efficient use of the energy received from the sun to power street lights in the city. Solar Panels mounted on the street lamps will collect the energy from the sun during day time, driving the LED lamps at night. The system we would be designing includes operation in the main streets of the major cities of Bangladesh which is to be equipped with solar powered street lamps effective in regulating the amount of load voltage depending on the intensity of traffic present. The project is about developing and fabricating the circuit that can charge the lead acid battery during day time by using solar energy as the source. The process, like most other photovoltaic systems theses days, would require the use of a micro-controller, namely PIC16F877A, to control many of the circuit functionalists including switching, controlling driver circuit, and integrating sensor output etc. The preferred lighting source is LED considering its photo-metrics such as efficacy, life span, cost, efficiency and power consumption. Since DC supply is being used, a DC-to-DC converter is employed to implement the LED. Traffic detection will be done through the concept of ultrasonic sensing using the Ping Sensor. In different seasons, the sun is incident on the earth’s surface and thereby on the solar panels in different angles. Thus a mounting angle for the panels has also been determined which will allow optimum efficiency for all four seasons of the year. This thesis is submitted in a partial fulfillment of the requirement for the degree of Bachelor of Science in Electrical and Electronic Engineering.

2012-12-01T00:00:00Z