The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, we consider the problem of cyclic block construction, for frequency-domain equalization (FDE) of SOQPSK, using an intrafix segment in addition to the cyclic prefix. We propose a novel procedure to compute the intrafix symbols for SOQPSK-TG waveforms used in aeronautical telemetry. The proposed method is employed to generate an exact cyclic signal, which is a requirement for implementation...
Transient analysis plays an important role in power system. As far as the stability of a plant is concerned, transient stability is very critical for small power plants. Transient analysis is aimed at determining whether a system will remain in synchronism with other generating plants after disturbances. In this paper, transient stability for a small power plant (80MW) has been studied through ETAP...
In this paper, a study has been made on the cost and performance analysis of wind power plant in the coastal region of Chittagong of Bangladesh using RET Screen software. Till to date, no reliable data on wind power is available on Bangladesh. Very recently, some organizations named BPDB, Bangladesh Metrological Department and CWET of India have taken up projects to study wind potential along the...
Bangladesh receives an average daily solar energy of 4–6.5 kWh/m2/day [1] which is highly suitable for generation of electricity through solar PV. As Bangladesh is one of the highly densely populated countries in the world [2], so, it is difficult to get empty space for generation of solar PV based power. Population growth is quite high, approximately 1.6% per year [3] and the available space is shrinking...
Normally, I-V characteristic of a solar PV under STC is a standard curve plotted through a sun simulator. However, in real life situation, the performance of the module is often affected by different environmental parameters that are not taken into account while plotting the curve. The open circuit voltage and short circuit current are directly dependent on irradiance and temperature. Due to dust...
Storage device in renewable energy applications plays an important role for efficient operation. For solar PV applications, storage device is an integral part during post sun shine hours to supply power to the load. For Solar Home System (SHS), approximately 60% of the total cost is due to storage battery and the battery needs replacement in every five years or so. If the performance of the battery...
As a sustainable and alternative source of renewable energy, utilization of solar power has become immensely popular nowadays. In Bangladesh, there are more than 4 million SHSs which have been installed till January, 2015 [1]. Under this Solar Home System (SHS) program of IDCOL, there are a number of partner organizations (PO), providing their supports for establishing remote rural area electrification...
Arc is formed in circuit breakers and switches during contact separation of high energy circuits. Arc suppression in those circuits is required to prevent damage to the contacts of the circuit breakers/ switches and to reduce the generation of heat in the vicinity of the contact. Such arcing also forms new chemical compounds around the air that includes oxides of nitrogen, ozone etc. Contact surface...
Solar energy is one of the most popular form of renewable energy. The use of solar panel is increasing rapidly all over the world. Fortunately, the location of Bangladesh is quite suitable for harnessing solar energy. However, large area is still uncovered either by grid electricity or by electricity generated from renewable sources. In the off grid areas of Bangladesh, solar home system (SHS) is...
This paper presents a prototype implementation of smart meter that facilitates the migration of our existing conventional distribution systems towards the smart distribution system. This is a step forward towards implementation of smart grid system. The proposed smart meter that establishes a two-way wireless communication link between the consumer premise and service provider can provide a number...
Smart Grid is being considered in power systems industry for its vast potentials in providing numerous benefits that include efficient management, self-healing of the network and dynamic pricing. Such a concept can also be applied in managing grid networks that contain renewable energy sources such solar panel, wind and biogas based plants. Renewable energy (RE) sources and the related technology...
Global warming due to greenhouse gas emission and the energy scarcity worldwide are prompting almost all the countries in the world to look for alternative sources of energy. Energy situation in Bangladesh is extremely critical and its major power stations are run by natural gas. Presently, the gas reserve has fallen to such an alarming level that if no new reserves are discovered then this reserve...
In the off grid areas of underdeveloped countries households use oil based lamps to carry out their day to day activities in the post dusk period. As a developing country, around 40% people in Bangladesh do not have access to electricity and mainly rely on oil based lamps after dusk. The luminous output of theses lamps is extremely small and causes continuous strain in the eyes which ultimately produces...
A model has been presented to estimate the battery size in a Solar Home System with respect to the night time load and the panel size. Falling solar panel cost has opened up the possible options to reduce the battery size by increasing panel size. It has been shown that although the cost of the system increases by a small margin, an increased size of the solar panel enhances the overall energy output...
Village households mainly depend on wood and cow dung and other bio mass sources to meet their energy requirements. The negative impacts on the dependence of such sources as fuel pose a great threat to the environment. Due to deforestation, wood is becoming scarce and its price is increasing at a fast rate. Use of other biomass sources for heating in a primitive way pose a great threat to the environment...
Sandwip is a self dependent island of Bangladesh, where agricultural products are exported to other parts of the country after local consumption. Because of substantial production of agricultural products and good number of domestic animals available there, the island can set a unique example of harnessing energy from the bio mass sources. As the island is not connected to the national grid and also...
In this paper, a study has been made to enhance the performance of Solar Home System (SHS) by a very simple method where the investment cost is negligible. Like any other developing country of the world, most of the rural people of Bangladesh do not receive grid power due to shortage the of primary energy sources and the high cost involved for transmission & distribution system. To stimulate the...
Various methods are being adopted to enhance the performance of a solar panel. The most common method is to track the sun for performance enhancement. Such method needs complicated control and drive circuits for implementation. Also, the power required for the tracking motor has to be provided by the solar panel and the battery system. Although better performance is achievable by the sun tracker,...
Solar Panel has its wide use starting from a simple 5 W diode lamp to a few kW ac drives. A solar panel with a battery and a charge controller and other auxiliary devices like dc to ac converters constitute a Solar Home System (SHS). The charge controller also known as solar panel voltage regulator, which is used to monitor and regulate the charging of the battery and to initiate alarms and disconnection...
Energy costing for a Solar Home System has been presented here considering the main cost components. It has been identified that the cost of solar PV panels, bank interest rate, cost of battery and its longevity plays the most important role in determining the energy cost. Average solar insolation is also taken into consideration and the results show that contribution of the storage battery towards...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.