Renewables and Efficiency

A promising architecture to detect bearing failures in wind-turbine gearboxes has been presented that comprises a combination of angular resampling for vibration analysis. monitoring of the wind-turbine power output and data-mining techniques for the classification task. To overcome the lack of datasets with a wide range of conditions of loads …

In this paper. the authors first investigate the effects of using different hub height wind turbines in a small onshore wind farm with nested GA. The GA parameters are first validated through pretest and comparison with previous research results. Three case studies are conducte d by comparing wind farms using …

Nanofluids are advanced fluids containing nano-sized particles that have emerged during the last two decades. Nanofluids are used to improve system performance in many thermal engineering systems. This paper presented a review of the applications of nano- fluids in solar thermal engineering. The experimental and numerical studies for solar collectors …

Because of the dependency of output power of the PV cells to the irradiance and temperature. noticeable amount of fluctuations is injected to the system that is not acceptable and should be reduced so that the power quality of the system is improved. In this paper application of the ECS …

An optimal MPC-based control strategy is proposed for coordinating different DERs for an isolated power system. The designed MPC control strategy is able to meet all the performance objectives which are to minimize fuel costs and changes in power output of diesel generators (minimizing mechanical wear and tear). minimize costs …

The analysis shows that Let seng is a Class 4 site with 95% C.I. of both the bi-annual mean wind speed given by 5.97 0.07 m s and the bi-annual mean power density of 208.56 7.31 W m2 both calculated at 10 m a.g.l. The minimum speed is hardly ever …

In general. evaluating energy systems is a complex analysis that can be defined as a multi-dimensional space of different indicators and objectives. The use of multicriteria decision analysis (MCDA) techniques provides a reliable methodology to rank alternative renewable energy resources. technologies and projects in the presence of different objectives and …

Among the RES (renewable energy sources) available in the world PV based energy harvesting are more reliable for rural. off grid and also for green energy applications. Since the electrical energy available from PV is DC we can use it for serving the DC loads which reduces the conversion losses. …

The simulation results shows that proposed control scheme provides required voltage stability in an islanded microgrid and thereby improves power quality at the consumer terminal. Different test conditions have been identified and simulated under islanded microgrid to analyse the effectiveness of D-statcom. The simulation clearly shows that proposed D-statcom can …

Pathways to a Smarter Power System studies different concepts within smart grids that are used in both industry and system regulators (e.g. distribution and transmission system operators) and research. This book covers these concepts from multiple perspectives and in multiple contexts. presenting detailed technical information on renewable energy systems. distributed …