Hybrid Photovoltaics Articles
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Energy support measures and their impact on innovation in the renewable energy sector in Europe
Governments support energy production and consumption in order to meet social, economic and environmental objectives, and they have been doing so for decades. In times of economic crisis, public budgets and household incomes come under pressure. At the same time, countries need to kick‑start their economies by creating new employment opportunities in emerging industries such as the ...
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Wind & solar energy and nature conservation
Climate change and the degradation of ecosystems and biodiversity cannot be solved in isolation. Land and marine ecosystems play a crucial role in the climate system, capturing roughly half of carbon dioxide emissions generated by human activities (UNEP, 2009). Protecting biodiversity preserves ecosystem services that are important for regulating the climate and helping us to adapt to the impacts ...
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Inclusion of biodiesel and PV modules in a wind diesel hybrid system supplying electrical loads on a small farm
The growing interest in biofuels is a consequence of the need to reduce operating costs of energy systems and the need to reduce emissions of greenhouse gases. The same applies to PV modules, comprising a solution environmentally desirable for power generation. This paper presents a study on the inclusion of biodiesel and PV modules in a system already in operation on a small farm in southern ...
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China invests billions in international renewable energy projects
It’s well-known that China ranks first in the world in attracting clean energy investment, receiving US$ 65.1 billion in 2012. But new analysis from WRI shows another side to this story: China is increasingly becoming a global force in international clean energy investment, too. In fact, the country has provided nearly $40 billion dollars to other countries’ solar and wind industries ...
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CSP Thermal Energy Storage vital for utilities and grid operators
The modern age of CSP can arguably be traced back to the 354MW Solar Energy Generating Systems (SEGS) in the Mojave desert, which now make up the oldest operating plant in the world, as well as one of the largest. However, recent developments in the industry will see SEGS eclipsed by 5 projects that are scheduled to come online in 2013-14, with a combined total of 1312MW. The five plants in ...
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The Energy Game is Rigged: Fossil Fuel Subsidies Topped $620 Billion in 2011
The energy game is rigged in favor of fossil fuels because we omit the environmental and health costs of burning coal, oil, and natural gas from their prices. Subsidies manipulate the game even further. According to conservative estimates from the Global Subsidies Initiative and the International Energy Agency (IEA), governments around the world spent more than $620 billion to subsidize fossil ...
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A case study of hybrid wind–solar power system for reduction of CO2 emissions
In this study, the solar radiation and wind data pertaining to Bigadic region are analyzed to assess the performance of a hybrid Photovoltaic–Wind–Diesel–Battery energy system. The average energy consumption of the system is about 20.33 kWh per day and 600 kWh per month, with a peak power demand of 2.4 kW. A 10 kW Wind Turbine and a 1 kWp PV energy system with 48 kW battery are installed. The ...
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A novel stabilisation scheme for hybrid photovoltaic, fuel–cell and diesel gen–set utilisation system
The paper presents a novel FACTS–based modulated filter compensator scheme for a hybrid renewable photovoltaic–diesel–fuel cell common DC bus interface scheme. The proposed standalone photovoltaic–diesel–fuel system is fully interfaced using the common AC–DC collection bus topology. This allows for full decoupling of AC and DC type green source and ensures full flexibility in controlling the ...
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Quantum dots of lead selenide: evolution of size and geometry and influence on photovoltaic effect
Lead selenide quantum dots were synthesised by the colloidal chemical synthesis route at different reaction temperatures. The nanocrystals were characterised by X–ray diffraction (XRD), High–resolution transmission electron microscopy (HRTEM) and FTIR spectroscopy. Diameter of the PbSe quantum dots increased with reaction temperature, with average diameter varying from 30 nm to 200 nm at reaction ...
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A case study of hybrid wind-solar power system for reduction of CO2 emissions
In this study, the solar radiation and wind data pertaining to Bigadic region are analyzed to assess the performance of a hybrid Photovoltaic-Wind-Diesel-Battery energy system. The average energy consumption of the system is about 20.33 kWh per day and 600 kWh per month, with a peak power demand of 2.4 kW. A 10 kW Wind Turbine and a 1 kWp PV energy system with 48 kW battery are installed. The ...
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Want low-cost clean energy? Bank on innovation
In the United States, there is a heated debate about how much government should support renewable energy innovation. While you won’t find anyone who says they don’t value ‘innovation’, the U.S. federal investment in energy innovation across both fossil and renewable technology is still anemic, badly trailing China and only about one third of the amount recommended by the ...
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An efficient hybrid wave/photovoltaic scheme for energy supply in remote areas
This paper presents the efficient utilisation of hybrid photovoltaic/wave energy system for desalination water pumping and supplying the local AC and DC loads. The novel hybrid system comprises eight key parts. The PV array and wave energy permanent magnet linear generator (PMLG) as energy sources, novel AC side modulated power filter compensator (MPFC), AC-DC converter, novel DC side green plug ...
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A frequency control method for isolated photovoltaic-diesel hybrid power system without smoothing renewable power variations
In this paper, a frequency control method is introduced for photovoltaic-diesel hybrid system by using a load estimator and an energy storage system. The proposed method is compared with an energy storage based conventional control method and with a fuzzy based frequency control method. Simulation results show that the proposed method is feasible to reduce the frequency deviations of the isolated ...
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DOE provides more renewables funding
The U.S. Department of Energy (DOE) announced on September 16 that it will provide nearly $100 million for renewable energy research, including $16.5 million for biomass energy, $30 million for state energy efficiency projects, and $9.6 million for “transformational” energy research, such as airborne wind turbines and solar photovoltaic (PV) systems with non-mechanical sun-tracking ...
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Nigerian professionals boost their know-how in Renewable Energies
RENAC holds a sell-out training course in Nigeria on behalf of the Energy Commission of Nigeria . Berlin, 10.8.2010 – On behalf of the Energy Commission of Nigeria together with Eauxwell Nigeria Limited, the Berlin-based Renewables Academy last week carried out a renewable energy training seminar in Abuja, Nigeria. Nearly 120 decision-makers and practitioners participated in the ...
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Application of genetic algorithm and neural network for sizing of hybrid photovoltaic wind power generation (HPVWPG) systems
In this paper, a methodology for sizing of hybrid photovoltaic-wind power generation (HPVWPG) system is described. The purpose of this methodology is to predict the PV-generator area, the capacity of the battery and the capacity of the wind generator in isolated (remote) areas, where the meteorological data (solar irradiation, air temperature, wind speed, etc) are not always available. For this ...
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Energy and exergy metrics analyses of Hybrid Photovoltaic-Thermal air collector
This paper presents the Energy Pay Back Time (EPBT) of Hybrid Photovoltaic-Thermal (HPVT) air collector based on exergy analysis for composite climate of New Delhi. The exergy metrics namely Electricity Production Factor and Life Cycle Conversion Efficiency in addition to EPBT have also been evaluated by using exergetic output. It has been observed that EPBT of HPVT air collector without balance ...
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The techno-economic and environmental aspects of a hybrid PV-diesel-battery power system for remote farm houses
In this study, the solar radiation data of Balikesir in Turkey are analysed to assess the techno-economic viability and environmental performance of a hybrid Photovoltaic (PV)-diesel-battery system to meet the load requirements of a typical remote farm house. Several aspects of the system are studied through the Cost of Energy (CoE), the operational hours of diesel generator, unmet load, excess ...
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Thermal modelling, validation and exergetic analysis of a hybrid Photovoltaic/Thermal (PV/T) active solar still
This paper presents the thermal analysis of a self sustainable, new design of hybrid photovoltaic/thermal (PV/T) active solar distillation system. The experiments were conducted for 24 h (7am-7am) for the New Delhi (India) climatic conditions on typical days during the month of April 2006 for water at different depths (i.e., 0.05, 0.10, 0.15 m) in order to validate the experimental results, a ...
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Thermodynamic performance analysis of a hybrid Photovoltaic-Thermal (PV/T) integrated greenhouse air heater and dryer
In this paper, performance analysis of a hybrid photovoltaic-thermal (PV/T) greenhouse air heater and dryer has been carried out. Analytical expressions have been developed for: greenhouse air temperature, instantaneous and overall energy and exergy efficiencies for without load, and instantaneous exergy efficiency with load under forced mode operation. An experimental validation has been carried ...
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