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Publications (38)
In the present work, we have investigated influence of site conditions and limitations, technical faults and failures of sub-systems under unforeseen circumstances, and changing climatic conditions on the energy yield of possible configurations of roof mounted solar PV systems on the campus of an educational institute. Different configurations of t...
In the work presented, the results of the online monitoring of a rooftop stand-alone solar photovoltaic (SPV) system with an installed capacity of 4.5 kWP have been reported. The method of analyzing the data acquired is in accordance with the IEC standard 61724, 1998. The online tracking was carried out using Schneider Electric’s Conext Insights pl...
Many biological sources of sound in tropical coastal shallow-water marine environments remain unidentified. Characterizing the soundscape of such environments requires that all sources of biological sound be examined for their distinct patterns and specific frequency ranges. The present study identified soniferous fish in the ecosystem and measured...
Advancement in solar photovoltaic (SPV) system technologies over past decades has resulted in regular decrease in prices of the systems world-over. The number of installations is projected to increase manifolds due to proactive Government policies and support for market development. There is need to study performance of already installed systems an...
Off-shore Floating Solar Photovoltaic and Wind Power installations are two potential future clean energy technology options which are being considered by energy developers. Environmental impacts must be evaluated on project-by-project basis as these are site-specific. In the present work, we propose a method for determining baseline reference level...
The internet has had a tremendous impact on our routine life. Recent developments in the Internet of Things (IoT) technology have brought several issues to fore. IoT is a new emerging technology in which the electronic devices communicate through the medium of the Internet for remote sensing and control. IoT is not a single technology; rather it is...
Stand-alone solar photovoltaic (SA-SPV) systems are attractive option for rural electrification programs in many countries. These systems are invariably provided with battery energy storage (BES) for using stored electricity during nighttime. Availability of bi-directional power electronic converter promises to enhance application of these SA-SPV s...
In India, there has been dramatic market development in favour of solar photovoltaic system (SPV) in the recent past due to pro-active policies, plans and initiatives of federal as well as state government. The governments have set ambitious target for renewable energy based electric power generation over short term as well as long term. In the rec...
In the present work, we report results of operational testing of a rooftop stand-alone solar photovoltaic (SA-SPV) system of capacity 6.75 kWp over a period of one year. The performance is measured in terms of daily energy yield from SPV array, daily energy output from the battery energy storage (BES) and the inverter. The system's gross annual ene...
Brief statement of existing capability and future roadmap for R&D and R&C capacity building at Renewable Energy Systems Laboratory, Department of Electrical and Electronics Engineering, BITS, Pilani K. K. Birla Goa Campus, Zuarinagar, Goa- 403 726, INDIA
H 2 is explosive, colorless and odorless Metal oxides, Pt and Pd can sense H 2 but operate only at high temperature and are expensive respectively [1, 2] This work present RGO-Pt based H 2
Assement of Wind Power Potential in a Region
In this paper, using hourly average wind data recorded for a period of one year is used to estimate wind power potential in a region of Goa, India. The wind power potential is estimated using Weibull probability density function. In this paper, the Weibull parameters namely, shape parameter (k) and scale parameter (c), are estimated by using maximu...
Wind resource assessment is the key step in windfarm deployment at pre-investment stage. In a wind farm, it is often the case that wind climate data is measured at one place and it is required to estimate wind resource potential at any other point in the vicinity. Also, the wind resource potential depends on the effect of terrain at the wind farm s...
Digital volume pulse(DVP) refers to the physiological signal that quantifies the changes in blood volume in the artery during breathing. DVP signals are acquired using methods such as invasive catheterization, mechanical tonometry and photoplethysmography. From the DVP signals critical biological parameters such as heart rate, stiffness index, refl...
The generation of electrical energy from wind can be economically achieved only if a significant wind resource exits. The sites with small percentage differences in average wind speeds can have a substantial difference in available energy because of the cubic relationship between the wind speed and output power. Therefore, accurate and throughout m...
In this paper, the wind power is predicted using artificial intelligence techniques. The wind speed data as input and wind power data as output, measured at ten minutes interval for a period of eleven months are used for the study. The artificial intelligence techniques such as artificial neural network and genetic algorithm are used for prediction...
Force Sensing Resistors (FSR) are ultra-thin, low-cost, pressure sensors, which exhibit change in their electrical resistance when force is applied on their surface. The FSR has been used in wide ranging applications in the automotive industry, musical instruments, touch-buttons, portable electronic devices, etc. The FSR is also proving to be promi...
In the present work, genetic algorithm has been used to resolve the placement of wind turbines in a wind park giving
maximum power and efficiency with minimum number of turbines. Unlike past approaches where each plot was subdivided into smaller square grids at the centre of which a turbine can be placed, the present study does not require division...
In the present study, particle swarm optimisation has been used to resolve the placement of wind turbines
in a wind park giving maximum power and efficiency with minimum number of turbines. Unlike past
approaches where each plot was subdivided into smaller square grids at the centre of which a turbine can
be placed, the present study does not requi...
In this paper, A New Approach by combining Genetic algorithm with Logistic function is proposed for prediction of wind power generation capacity to be installed in future. The method uses logistic function for predicting the growth of on-shore wind power potential and then the genetic algorithm is used to update the regression coefficients of the l...
Wind power technology has been developing widely in recent years. Several research fields in power systems such as prediction of wind speed, wind generator system modeling, system stability and control of wind energy conversion system are emphasized further with the consideration of wind power. With increasing penetration level in power system, the...
The gap in demand and supply of energy can be met by optimal allocation of energy resources. In developing countries like India, demand for energy is constantly rising. Conventional energy supply options have failed to cope up with this increase. Therefore, it is required to plan the allocation at micro-level also. A micro-level energy planning thu...
The gap in supply and demand of energy can be met by optimal allocation of energy resources. Seventy percent of India's population lives in villages and their main source of livelihood is agriculture. For the socio-economic development, energy allocation at the rural level is gaining importance these days. Integrated Renewable Energy System (IRES)...
Hybrid renewable energy systems (HRES) are becoming popular for remote area power generation applications due to advances in renewable energy technologies and subsequent rise in prices of petroleum products. Economic aspects of these technologies are sufficiently promising to include them in developing power generation capacity for developing count...
The thermal performance of a direct earth-coupled building is evaluated for different depths below grade in terms of the discomfort index defined as the total of heating degree hours in winter and cooling degree hours in summer. The effectiveness of different surface treatments (namely shading, wetting, blackening and glazing, commensurate with the...
Dependence of the discomfort index on the south window area and the cost of optimally distributed insulation over the walls and roof (corresponding to different available investments) of a non-air-conditioned one room building is investigated. It is assumed that, in the winter, the wooden shutters provided in the window are opened during the day an...
Building insulation can be effective in energy conservation by reducing heating and cooling loads in an air-conditioned building. Following the method given by Kumar et al. (1989), optimum thicknesses of insulation for the components of a one-room building are determined. It is shown that the optimum thicknesses of insulation for building component...
The effects of the solar absorptivity and the thermal emissivity of exterior building surfaces on the indoor air temperature of a one room building are evaluated in terms of the discomfort index. The thermal performance of the building has been investigated for four different climates prevalent in India, namely, composite (New Delhi), hot and dry (...
The net savings (cost of fuel saved minus the cost of additional thickness of wall and the singly glazed window of the south wall) by the use of a thicker wall and glazed window on the south side have been evaluated for the cold desert climate in India (typified by Leh in Ladakh); the traditional construction implies mud walls and room temperature...
Energy conservation potential of the evaporative roof cooling technique for a cinema house in a composite climate (characterized by Delhi) has been evaluated. Thermal loads due to heat conduction through the building envelope, the required ventilation and the occupants have been taken into account. Life-cycle-cost analysis has been employed to eval...
Questions
Question (1)
We are considering installing 30 MW SPV power generation facility, connected to 11 kV power grid. Th e system is required to supply energy upto 5 MWh during six to seven hours after sun-set per day. We are exploring practical options for neat and clean storage of electricity at the site. The site has more than 300 sunny days in a year. It is desired that system will be operated such that the battery bank will be charged on priority during the day, and excess power will be supplied to grid at the site.
