Conference Paper

Permanent URI for this collectionhttps://hdl.handle.net/10361/6880

Browse

Now showing 1 - 16 of 16

Electrically facilitated solar cargo hauler - a key to easy and safe transportation of goods without dependency on the national grid
(© 2016 IEEE, 2016-10) Purbasha, A. E.; Khan, F. R.; Sanjib, M.; Azad, Akm M.M.Abdul Malek; Department of Electrical and Electronic Engineering
Cargo is a vital mode of transporting goods. In Bangladesh, most of the cargo haulers are manually driven in rural areas. If motorized, the cargos are likely to draw a huge amount of power from the national grid which in turn increases load shedding. Considering the necessity to technologically improve the manually driven cargo hauler and for the development of rural areas, Control & Applications Research Centre (CARC), BRAC University, has projected an easy, eco-friendly and safe way of transporting large amount of goods without being dependent on the national grid. After CARC has provided solution to power dependency for electrically assisted torque sensor based rickshaw-van (human hauler) with PV panel, the cargo hauler has been improved with extra features added to enhance the performance and comfort of the cargo puller. The final designed cargo hauler consists of three 500W hub motors, shock absorber, high performance heavy duty drum brakes and pedicab wheels. An additional carrier attached at the rear further maximizes the load carrying capacity of the vehicle. The paper depicts field test data and qualitative analysis of the cargo hauler and it has been found that cargo hauler gives almost twice maximum and average speed than the human hauler in half of the run time than that of human hauler.
Solar electric ambulance van unfolding medical emergencies of rural Bangladesh
(© 2016 IEEE, 2016-10) Tarek, R.; Anjum, Adiba; Hoque, Md Ashiqul; Azad, Akm M.M.Abdul Malek; Department of Electrical and Electronic Engineering
Rickshaws are a key mode of transportation in Bangladesh. When it was changed to electrically-assisted ones, it achieved prevalence but was soon banned because of overconsumption of power from the national grid. In determination, Control and Applications Research Centre (CARC), BRAC University has proposed the idea to give a complete off grid course of action by using the PV array, torque sensor pedal and solar battery charging station. Since a significant number of people live in the rural areas, the probability of reaching the hospitals in the towns is low because of absence of proper mode of transportation. The torque sensor pedal decreases the over-usage of battery-bank. The control structure lessens the human effort and curtails over-usage of motor. 400W PV panel share power with the battery bank and the solar battery charging station completely detaches itself from the national grid. Previous model called 'The Human Hauler' implemented these techniques but our modifications made the entire system more efficient. We have achieved up to 25% increase in total distance travelled and 37% increase in speed. Further modifications to chassis with five wheels made the vehicle stable. This paper comprises of the configuration and usage of the thought proposed via CARC.
Development of double burner smart electric stove powered by solar photovoltaic energy
(© 2016 IEEE, 2016-10) Siddiqua, Sarah; Firuz, S.; Nur, B. M.; Shaon, R. J.; Chowdhury, Sheri Jahan; Azad, Akm M.M.Abdul Malek; Department of Electrical and Electronic Engineering
Bangladesh is facing overwhelming energy challenges that are likely to increase over the next few decades. By acknowledging the potential of renewable energy technologies and associated energy storage, Bangladesh could possibly meet its unprecedented energy demand. Our goal is to design a project which involves the development of a solar-powered electric stove that would use sunlight as a source of power. The electricity and gas shortage in Bangladesh are strong motivators for a solar electric stove to replace the normal stoves. Our system consists of two burners which altogether require solar panels providing power of 1520W. The coils were designed according to the power rating. There are two sets of 48V lead acid batteries which share the power with the Photovoltaic panels while cooking in daylight; the batteries are charged by the panels when the stove is not in use. Heat controllers have been mounted to allow the user to regulate the heat. Moreover, food had been cooked on the designed stove and data obtained has been analyzed. Satisfactory results in terms of the cooking time of various food has rendered us to conclude its effectiveness for the households in distant rural areas of the country.
Real-time monitoring of Solar Battery Charging Station
(© 2016 IEEE, 8/31/2016) Priyanka, Mirza Karishma; Chowdhury, Abrar Alvi; Mahmud, Bushra; Chowdhury, Sheri Jahan; Azad, Akm M.M.Abdul Malek; Department of Electrical and Electronic Engineering
This paper represents a real-time monitoring technique of all the components of a Solar Battery Charging Station (SBCS). Its ability to generate clean energy at free of cost, along with availability almost all year round makes SBCS very popular in tropical countries like Bangladesh. Successful implementation of this technique in any existing SBCS can increase its efficiency and distribute more power to rural areas where National Grid is unavailable. The purpose of our project is to monitor every available aspect in any existing SBCS so that manual labor of any kind would not be required. In order to do so, we have created a new software for Windows operating system to monitor the battery voltages, SOC, approximate time remaining to become fully charged as well as each individual panel status and overall solar voltage and solar current, along with a manual backup system in case of low solar radiation. To take readings, we used a Data Acquisition (DAQ) Card and interfaced it with our software in a computer, so that we can take the most out of our available resources and give reliable readings in real time.
Mathematical modeling and DLQR based controller design for a non-minimum phase Electro Hydraulic Servo system (EHS)
(© 2016 IEEE, 2/8/2017) Ahmed, Mazid Ishtique; Azad, Akm M.M.Abdul Malek; Department of Electrical and Electronic Engineering
In this paper, an Electro-Hydraulic Servo system is presented which bears the characteristics of basic Non-minimum phase (NMP) systems. Controlling problems encountered in NMP systems and optimizing the system response with optimal control strategy is the prime objective of this study. The described EHS system is mathematically modeled to obtain the discrete-time transfer function for analyzing its characteristics of Non-minimum phase system and illustrated by computer simulation using MATLAB ©. Discrete Linear Quadratic Regulator (DLQR) is presented as the controller for optimal controlling of the NMP behavior of EHS system. Response of the system is studied with and without the application of the DLQR. The comparative study illustrates an improvement in system behavior which can be used for obtaining perfect tracking and position tracking control of such systems.
Design, implementation and performance of a controller for uninterruptible solar hot water system
(© 2011 Institute of Electrical and Electronics Engineers Inc., 2011) Hasan, Mohammed A.; Arifin, K.; Rahman, Arifur K M Zillur; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
This paper describes a novel design and implementation of an automatic control system for solar hot water system in both domestic and industrial purpose. The project consists of one 150 liters evacuated tube solar collector, 300 liter storage tank, solenoid valves and an electric water heater. The objective was to implement an embedded system to control how and from which source (collector or electric heater) the hot water is been provided to the user end. The whole system is solely controlled by the controller which decides how the water should flow to the user end. The controller mainly consists of ATmega32 for central processing, LCD for displaying the level of water inside the tanks, segment displays for showing the temperature inside the tank, a regulator for setting the outlet temperature and a button for confirming the set temperature. The controller is powered by a DC power unit.
Performance analysis of robotic arm manipulators control system under multitasking environment
(© 2011 Institute of Electrical and Electronics Engineers Inc., 2011) Moshi, A. A.; Cynthia, S. S.; Islam, E.; Rahman, Rifat; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
To observe the performance of PC based robot manipulator under general purpose (Windows), Soft (Linux) and Hard (RT Linux) Real Time operating systems (OS). The same open loop system is observed in different operating system under multitasking environment. The Data Acquisition (DAq, PCL-812PG) card is used as a hardware interface. This experiment shows that the real time error (Jitter) is minimum in RT-Linux operating system than any other Soft Real-Time operating systems. Delay analysis of this supervisory system is calculated in RT-Linux operating system.
Feasibility and importance of an automatic controller for solar hot water system
(© 2011 Institute of Electrical and Electronics Engineers Inc., 2011) Hasan, Mohammed A.; Rahman, Arifur K M Zillur; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
Being a developing country, Bangladesh has a very poor condition in terms of generating electricity. Alongside, natural resources like fuel and coal are in limited amount and will not be able to sustain forever. As a result, sustainable energy is starting to gain its popularity in Bangladesh. Being a geographically suitable country for harvesting, solar energy can be a prime source of generating electricity in Bangladesh in a green way. Generating electricity in commercial scale using solar panels can take a few years because of the panels being very expensive. But another way to utilize this energy is by using it to heat up water. Hospitals, industries, households - any kind of infrastructure requires hot water and a lot of electricity and gas is being used up for that. Keeping that in mind, this project for developing an automatic solar hot water system was commenced and completed. Solar hot water systems are also growing in Bangladesh but the automatic controller that we have developed is a new concept here. The controller makes the system user friendly, requires less interaction with humans and provides uninterrupted hot water with least maintenance.
Performance improvement of SHWS by increasing thermal efficiency using insulation materials and optimum position of solar collectors
(© 2012 Institute of Electrical and Electronics Engineers Inc., 2012) Ferdous, Jannatul M Shafi; Islam, Md Sanzidul; Shaker, Nabil; Khan, Bonnyamin; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
The word itself "Solar" describes that we are dealing with some renewable energy source for a hot water system. A Solar Hot Water System(SHWS) has been already designed, further implementation has been done by working on its insulation at variable time, temperature and solar radiation so that there is a minimum temperature drop over night decreases. A suitable material is found for insulation which is feasible, cost effective and available. For this project an instrument named "Pyranometer" has been used to measure solar radiation flux density (in watts per meter square) and the experimental data collected from pyranometer will be used to find the optimum position of SHWS.
Development of biomedical data acquisition system in hard real-time Linux environment
(© 2012 Institute of Electrical and Electronics Engineers Inc., 2012) Alam, Marzia Ruman; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
This paper proposes a data acquisition (DAQ) system for the bio signals which is based on the use of biosensors, signal processing unit, data acquisition card and computing device. The methodologies of developing a biomedical experimental set up for measurement, monitoring, recording bio-signal during animal testing in laboratory is presented. The device will be responsible for getting data through 16 channels. The channels will be connected with the biosensors through which the signals of different biological state (e.g. Electrocardiograph, Blood pressure etc.) of human or animal body will be retrieved. Obtaining the signals from biosensors data acquisition process will be done in a signal processing system and that will convert the resulting samples into numeric values which can be manipulated by the software. The signal data acquisition processing will be accomplished on Hard Real-Time Linux (RT-Linux) environment which will be presented through Graphical User Interface (GUI) developed in non RT-Linux environment. Linking between hard real time and non real time Linux will be done through Inter Process Communication (IPC) between two kernels.
Solar home system components qualification testing procedure and its effect in bangladesh perspective
(© 2012 Institute of Electrical and Electronics Engineers Inc., 2012) Khan, S. A.; Rahman, Rifat; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
Bangladesh has seen a proliferation of Solar Home System (SHS) in Off-grid areas as a substitute for grid electricity. Along with the demand, supply of low quality SHS components is increasing resulting in decreased SHS efficiency and adverse effect on the country's economy. In this case standard testing methods for the SHS components can help us verify the standard of the components in markets thus increase reliability and efficiency of the whole system. This paper discusses about the standard qualification testing procedure, its necessity and effect in Bangladesh prospective. Here we present the testing procedures used to determine whether the SHS components meet IDCOL standards and our findings on the components in concern. Sample testing data from our lab is also integrated in the paper.
Solar battery charging station and torque sensor based electrically assisted tricycle
(© 2012 Institute of Electrical and Electronics Engineers Inc., 2012) Faraz, T.; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
Bangladesh is witnessing an increase in solar electricity generation as part of an ambitious plan to boost the provision of power from renewable energy sources. Solar energy is being harnessed and converted to electrical energy via solar panels and then stored in batteries which can then be used to power households and agricultural activities. The introduction of a prototype design for a solar battery charging station can aid the process of solar electrification in rural areas and take the load off the grid in urban regions. The batteries charged by these stations can also be used to power modified rickshaws that are torque sensor based and electrically assisted. These sensor based hybrid rickshaws have a longer battery life that requires infrequent charging, are faster than conventional rickshaws and need less human effort to be plied on the streets.
Low cost cylindrical lumen testing procedure in Bangladesh perspective
(© 2013 IEEE Computer Society, 2013) Khan, S. A.; Rahman, Rifat; Shabnam, Farah; Azad, Dr. Md. AKM Abdul Malek; Department of Electrical and Electronic Engineering
Due to having several Solar Home System components manufacturers, overall quality of LED lamps varies from organization to organization. This unstable quality is increasing with the number of SHS installation and thus the system inefficiency. Hence, testing of LED lamps used in SHS is very important. However, existing procedure using the integrated sphere system for lumen test is quite costly in our country's perspective. Considering the situation, this research presents a low cost cylindrical procedure for lumen testing. The effectiveness of our novel system is tested in this paper. This research also includes the testing results from CARG lab, BRAC University.
Software implementation of the Central Solar Battery Charging Station (CSBCS)
(© 2013 Institute of Electrical and Electronics Engineers Inc., 2013) Chowdhury, Farhana; Shabnam, Farah; Islam, Farha R.; Azad, Dr. AKM Abdul Malek; Department of Electrical and Electronic Engineering
Solar Battery Charging Station is the beginner's outline of the Central Solar Battery Charging Station which can be worn as an alternation of the complementary power source or electricity for assembling the ever-increasing demand of our country, Bangladesh. Solar energy is a form of best renewable energy and by implementing this project as a prototype one; our motto is to extend the voice for 'Go Green-Save the Planet-work for existence'. Software implementation is needed to monitor the charging status of the individual batteries in a station. It can also detect whether the battery has been damaged or not at a certain voltage level. Thus, we have deliberated our software to monitor all the probable actions in the software development for Central Solar Battery Charging Station. It indicates the charging status independently for each battery coupled to the prototype central charging station through a charge controller that deliver the requisite quantity of current to the battery and also connected superficially with a Data Acquisition Card to examine the battery state with our software deployed using VISUAL STUDIO 2010 in C# programming language. Consequently, the entire charging process of the central charging station is a solitary means of communication as we are going to provide input quantity directly from PV solar panel or diesel generator (unconventional source).
Power conversion for environment friendly electrically assisted rickshaw using photovoltaic technology in Bangladesh
(© 2015 Institute of Electrical and Electronics Engineers Inc., 2015) Chowdhury, Shaika J.; Rahman, Rifat; Azad, Akm M.; Department of Electrical and Electronic Engineering
Addressing the problem of high energy consumption from national grid of electrically assisted rickshaw the Control and Applications Research Centre (CARC), BRAC University has proposed a field tested green solution: provide a share of the required energy of these rickshaws using solar energy. A 360Wp PV array was installed on a rickshaw and the performance was evaluated to determine its impact on the rickshaw and the energy saved from the national grid. The paper presents the fndings from the field tests. It is seen that 50% of the required load energy can be provided by the PV array, consequently saving that energy from the national grid. It is further seen that for the same amount of energy consumed from the battery, the distance coverage of these rickshaws can nearly be doubled.
Torque sensor based electrically assisted hybrid rickshaw-van with PV assistance and solar battery charging station
(© 2015 Institute of Electrical and Electronics Engineers Inc., 2015) Khan, Fabiha Roshni; Aurony, Anika Tasnim; Rahman, Ataur; Munira, Faiza; Halim, Nazia; Azad, AKM Abdul Malek; Department of Electrical and Electronic Engineering
A significant percentage of population in Bangladesh is directly or indirectly dependent upon the traditional tri-wheeler rickshaw. In order to advance the lifestyle and modernize the traditional tri-wheeler, battery powered rickshaws were introduced and thus it gained enormous popularity. However, after a few months, the Bangladesh government decided to ban import and assembly of electric vehicles, as it consumed energy from the already overloaded grid. Aiming to modernize the traditional tri-wheeler and make efficient use of renewable energy, Control & Applications Research Centre (CARC), BRAC University has proposed a field tested solution with the use of PV panel, torque sensor pedal and solar battery charging station to make the whole system independent of national grid. The paper describes the design and implementation of the PV array and torque sensor into the system and findings from the field tests along with the implementation of the solar battery charging station. It was found that 73% energy is saved when both PV array and torque sensor were integrated into the system. The distance travelled by the rickshaw-van was around 2.8 times greater than normal battery operated rickshaws.

Browse

Recent Submissions