Dr. Md. Mosaddequr Rahman
http://hdl.handle.net/10361/7015
2024-03-28T22:26:58Z
2024-03-28T22:26:58Z
A three level solar panel system with an automated solar tracker
Moniruzzaman, H. M.
Patwary, Munia
Rahman, Mosaddequr
http://hdl.handle.net/10361/7497
2018-07-25T10:44:43Z
2014-07-01T00:00:00Z
A three level solar panel system with an automated solar tracker
Moniruzzaman, H. M.; Patwary, Munia; Rahman, Mosaddequr
In this work, a detailed performance analysis of a three level solar panel system intended for its use in urban residential areas is carried out. The system consists of three panels fitted with automated solar tracker and mounted in a rack one above another at a fixed distance from each other to minimize the floor area while shifted horizontally from each other by half the panel width to avoid shading of the lower panels. Calculation shows that the proposed three level panel system can harness 18 - 64 % more energy than the three conventional single level fixed panel systems with 33% less area. An automated microcontroller controlled solar tracker is also developed for the proposed system to track the sun. Microcontroller calculates the sunrise and sunset times on each day using a set of equations and sends signal to the controlling motors to rotate the panels at a predetermined time intervals by a fixed angle to track the sun. Rotating the panels at some fixed time interval rather than on a continuous basis will minimize the energy consumption. The proposed system is easy to construct and implement, takes less floor space and will be effective for urban areas where not only electricity is in short supply, availability of roof top space to install solar panels is also very limited.
This conference paper was presented in the 3rd International Conference on the Developments in Renewable Energy Technology, ICDRET 2014; Dhaka; Bangladesh; 29 May 2014 through 31 May 2014 [© 2014 IEEE] The conference paper's definite version is available at: http://dx.doi.org/10.1109/ICDRET.2014.6861671
2014-07-01T00:00:00Z
Power pilferage in Bangladesh: a simple and economically affordable solution
Ahmed, Sadita
Mahmud, Abdullah Al
Rahman, Mosaddequr
http://hdl.handle.net/10361/7489
2018-07-25T10:39:32Z
2016-03-01T00:00:00Z
Power pilferage in Bangladesh: a simple and economically affordable solution
Ahmed, Sadita; Mahmud, Abdullah Al; Rahman, Mosaddequr
In Bangladesh, illegal consumption of electricity takes a considerable part of the revenue as a non-technical loss in power distribution system. Unlike technical losses, this has no easy way to be calculated and fixed. This paper discusses the methodology for detection of power pilferage and its implementation using embedded electronics system. The idea is to detect unauthorized tapping on distribution lines by comparing the energy transferred through the energy meter of a pole and the summation of energy consumed through energy meters of all premises connected to that pole. If these two data differ by an alarming measure, the respective authority will be notified. The communication between pole and premises and between pole and authority have been done wirelessly in the lowest possible cost considering the economic condition of the developing country. The cost analysis shows that if the system is implemented, total power system loss will reduce at least 15% of the current loss.
This conference paper was presented in the IEEE International WIE Conference on Electrical and Computer Engineering, WIECON-ECE 2015; Bangladesh University of Engineering and Technology (BUET)Dhaka; Bangladesh; 19 December 2015 through 20 December 2015 [© 2015 IEEE] The conference paper's definite version is available at: http://dx.doi.org/10.1109/WIECON-ECE.2015.7443967
2016-03-01T00:00:00Z
Chondrobot-2: A simple and efficient semi-autonomous tele-robotic lunar excavator
Rhaman, Md. Khalilur
Hossain, Md. Jonayet
Anik, Kazi Mohammad Razin
Oyon, Mahmudul Hasan
Nabia, Sarah Binte Nasir
Rahi, Nabil Shaker
Khan, Bonny Amin
Miran, Md. Mashiur Rahman
Bhuian, Belal Hossain
Rahman, Md. Mosaddequr
http://hdl.handle.net/10361/7429
2018-07-25T10:18:19Z
2012-01-01T00:00:00Z
Chondrobot-2: A simple and efficient semi-autonomous tele-robotic lunar excavator
Rhaman, Md. Khalilur; Hossain, Md. Jonayet; Anik, Kazi Mohammad Razin; Oyon, Mahmudul Hasan; Nabia, Sarah Binte Nasir; Rahi, Nabil Shaker; Khan, Bonny Amin; Miran, Md. Mashiur Rahman; Bhuian, Belal Hossain; Rahman, Md. Mosaddequr
A simple, light-weight and efficient excavation system to excavate and collect lunar regolith has been developed at BRAC university. The excavation system has a dimension of 1.21m × 0.66m × 0.74m with a total weight of 65 kg. This four wheel drive robot consists of a bucket-ladder system for excavation and is capable of collecting 8kg of regolith per minutes. It also includes a collector bucket which can contain 18kg regolith and deposit in a bin which is installed on 50 cm height. The excavation hardware can be operated both manually and remotely through a web browser by logging in from any computer without direct visual and auditory access to the hardware. A KINECT sensor based semi-auto navigation is incorporated to avoid obstacle while motion.
This conference paper was presented in the 15th International Conference on Computer and Information Technology, ICCIT 2012; Chittagong; Bangladesh; 22 December 2012 through 24 December 2012 [© 2012 IEEE] The conference paper's definite version is available at: http://dx.doi.org/10.1109/ICCITechn.2012.6509787
2012-01-01T00:00:00Z
A simple tele-robotic lunar excavator
Rhaman, Md. Khalilur
Hasan, Shiblee Imtiaz
Hossain, Md. Jonayet
Anik, Kazi Mohammad Razin
Oyon, Mahmudul Hasan
Bhuian, Belal Hossain
Rahman, Md. Mosaddequr
http://hdl.handle.net/10361/7415
2018-07-25T10:42:30Z
2013-01-01T00:00:00Z
A simple tele-robotic lunar excavator
Rhaman, Md. Khalilur; Hasan, Shiblee Imtiaz; Hossain, Md. Jonayet; Anik, Kazi Mohammad Razin; Oyon, Mahmudul Hasan; Bhuian, Belal Hossain; Rahman, Md. Mosaddequr
An excavation tele-robotic system is developed to excavate and collect lunar regolith. The excavator has been developed by the team BRACU ChondroBot consisting students from BRAC University for NASA's 2nd Annual Lunabotics Mining Competition (LMC) 2011. Considering the requirement of NASA and calculating the load, friction and power the mechanical excavator was designed and built. The dimension of the excavator is 1.45m ×.74m × 1.48m and the weight is 80 kg. It consists of two excavation arm and one pulley system depositor bucket. Two conveyer belt type wheels are used to drive the robot. Efficient control and communication is always a big challenge for a Tele-robot. In our developed system hardware can be operated both manually and remotely through a web browser by logging in from any computer without direct visual and auditory access to the hardware. A unique control circuit, graphical user interface and communication module for two terminals are also developed for remote access.
This conference paper was presented in the International Conference on Advanced Computer Science Applications and Technologies, ACSAT 2012; Kuala Lumpur; Malaysia; 26 November 2012 through 28 November 2012 [ © 2012 IEEE] The conference paper's definite version is available at: http://dx.doi.org/10.1109/ACSAT.2012.99
2013-01-01T00:00:00Z