Course Title: 
Renewable Energy and Energy Conservation
Course Code: 
Year Taught: 
Undergraduate (UG)
School of Engineering

'Renewable Energy and Energy Conservation' is a course offered in B. Tech. in Electrical and Electronics Engineering program at School of Engineering, Amrita Vishwa Vidyapeetham

Unit 1

Historical development of energy demand and supply systems. Impact of fossil fuel based systems. Energy scenario – global and national; Renewable energy potential – global and national. Renewable energy technologies – stand-alone, hybrid and grid-connected systems.

Solar Energy: Solar radiation, its measurements and analysis. Solar angles, day length, angle of incidence on tilted surface, Sunpath diagrams, Shadow determination. Extraterrestrial characteristics, Effect of earth atmosphere, measurement & estimation on horizontal and tilted surfaces.

Principle of Photovoltaic Conversion - Dark and illumination characteristics, Figure of merits of solar cell, Efficiency limits, Variation of efficiency with band-gap and temperature. Equivalent circuit. Crystalline and thin-film cells. Multi-junction cells. Concentrated PV cell.

Module,panel and array – series and parallel connections. Maximum power point tracking. SPV applications - battery charging, pumping and lighting, power plant. PV system design.

Small Hydro Power - Resource assessment, Environmental restrictions, SHP schemes – types, construction and equipment selection, Load frequency control.

Unit 2

Wind Energy: Atmospheric circulations. Wind shear and turbulence. Wind monitoring and resource assessment; Weibull parameters. Classification of wind regimes.

Aerodynamic principles - lift and drag forces. Power coefficient and Betz limit. Types and characteristics of wind turbines.

Wind electric generation systems – grid-connected systems: WT-IG, WT-DWIG, W T-DOIG, W T-PMG and W T-VSIG. Comparison of performance. Economic performance.

Development of windfarms, site selection, wake effect, performance indices.

Small WEGs – stand-alone and hybrid systems.

Unit 3

Biomass energy – Gasifiers and dual fuel engines; Ocean-thermal energy conversion; Tidal energy conversion; Wave energy conversion; Geothermal energy conversion; MHD; Hydrogen and fuel cells.

Energy Conservation in electrical equipment: Energy efficient lighting – luminous efficiency of lamps, efficient lamps, energy conservation codes and lighting design. Energy conservation in motors – estimation of operating efficiency of industrial motors, right selection of motor ratings, energy efficient motors; auto-stop control, delta-star operation, voltage control; Energy conservation in variable speed operation of pumps and fans – demerits of mechanical resistance control, advantages of variable speed drives, specific energy consumption, system design using VSD.

  • Thomas B Johansson et al, “Renewable Energy sources for fuel and electricity”, Earthscan Publishers, London,1993
  • J W Twidell and A D Weir, “Renewable Energy Resources”, ELBS, 1998.
  • G. N. Tiwari, M. K. Ghosal, “Fundamentals of renewable energy sources”, Alpha Science International Ltd., 2007.
  • Garg H P., Prakash J., “Solar Energy: Fundamentals & Applications”, Tata McGraw Hill, New Delhi, 1997
  • Kastha D, Banerji S and Bhadra S N, “Wind Electrical Systems”, Oxford University Press, New Delhi,1998
  • Tony Burton, David Sharpe, Nick Jemkins and Ervin Bossanyi, “Wind Energy Hand Book”, John Wiley & Sons, 2004
  • S. C. Tripathy, “Electric energy utilization and conservation”, Tata McGraw Hill Publishing company Ltd.,1987