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PV-Wind Hybrid Systems
Introduction
It is type of hybrid energy system consist of a photovoltaic array
coupled with a wind turbine.
This would create more output from the wind turbine during the
winter, whereas during the summer, the solar panels would produce
their peak output.
Photovoltaic (PV)- Wind power
• Photovoltaic (PV) cells are electronic devices that are based on
semiconductor technology and can produce an electric current
directly from sunlight.
• The best silicon PV modules now available commercially have an
efficiency of over 18%, and it is expected that in about 10 years’ time
module efficiencies may rise over 25%.
• Wind power is electricity produced by a generator, which is driven by
a turbine according to aerodynamics in flowing air.
Specific site conditions
• The PV-wind hybrid system suits to conditions where sun light and
wind has seasonal shifts.
• In summer the daytime is long and sun light is strong enough, while in
winter the days are shorter and there are more clouds.
• Inverters can also provide a utility inter-tie between the system and
the utility grid.
System Components
• A photo-voltaic solar-cell array
• A mast mounted wind generator
• Lead-acid storage batteries
• An inverter unit to convert DC power to AC power
• Electrical lighting loads and electrical heating loads
• Several fuse, junction boxes and associated wiring
• Test instruments for measuring voltages, currents, power factors, and
harmonic contamination data throughout the system.
Photovoltaic (PV) modules
• Photovoltaic (PV) modules convert sunlight into direct current (DC)
electricity.
• Modules can be wired together to form a PV array that is wiring
modules in series the available voltage is increased and by wiring in
parallel, the available current is increased.
• A typical PV module measures about 0.5 square meters (about 1.5 by
3.5 feet) and produces about 75 watts of DC electricity in full sun.
Wind turbine
• The three-bladed wind turbines are operated "upwind," with the
blades facing into the wind.
• The other common wind turbine type is the two-bladed, downwind
turbine.
• Utility-scale turbines range in size from 50 to 750 kilowatts.
• Single small turbines, below 50 kilowatts, are used for homes,
telecommunications dishes, or water pumping.
DC-AC inverter
• DC-AC inverter changes low voltage direct current (DC) power, which
is produced by the PV or wind turbine or stored in the battery into
standard alternating current (AC) house power that is 120 or 240VAC,
50 or 60 hertz.

• The “modern sine wave” Inverters supply uninterruptible power, i.e.
there are no blackouts or brownouts.
• The inverters come in sizes from 250 watts to over 8,000 watts.
PV modules mounting and wind turbine tower
• The PV modules mounting can be a ground mount that works either on
rooftops or the ground, or pole mount for getting them up in the air.
• Trackers are another PV mounting option, which are pole mounts that
automatically adjust themselves so that the PV could face the sun throughout
the day.
• Because the wind turbine should be mounded into non-turbulent wind, a tall
enough wind turbine tower is needed (9 m above anything within 120 m).
• There should also be enough space to properly anchor the guy wires.
Safe Equipment
• Safe equipment includes over-current and lightning protection components.
• Over-current protection components such as fuses and fused disconnects
protect the system's wiring and components in the event of short circuits.

• Fusing protects from overcurrent situations, and disconnects allow safe
shutdown of system components for maintenance and repair.
• Commercial lightning arrestors are available to help protect RE system
electronics against the lightning.
Meters and Instrumentation
It helps in keeping track of important things like:
• The battery voltage
• The amount of power they are currently consuming
• The state of charge in their batteries
• Also how much electricity traffics between a supply systems to the utility
grid for grid connection situations.
Batteries
• Batteries store electrical energy produced by RE resource in a reversible
chemical reaction.
• Most batteries employed in RE systems use the lead-acid batteries typically
encased in plastic and wired together in series and parallel strings by the
installer.
• A typical 12-volt system may have 800 amp-hours of battery capacity.
• This is the equivalent of 1,200 watts for eight hours if fully discharged and
starting from a fully charged state.
Charge controller regulator
• It prevents the PV array and wind turbine from over- charging the
battery.
• Most modern controllers maintain system voltage regulation
electronically by varying the width of DC pulses they send to the
batteries (this is called pulse width modulation or PWM).
• Another category called "shunt type" controllers divert excess energy
into a "shunt load.“
• A new generation of PV controllers has "maximum power point
tracking." They take advantage of the maximum power available in
the module by adjusting current and voltage.
Backup Power Resource
It can come either from a generator or from the utility grid when too
much energy is consumed or
when there has not been enough renewable energy coming into the
system.
Establishment Of A Wind/Pv Hybrid Unit
The DC voltage measured across each PV unit (12 V DC)
Images
Advantages
• Best for Remote Area Power Systems (RAPS)
• Two different energy sources provide a diversity of supply, reducing the risk
of power outages.

• Can be used for 24-hrs power generation.
• Operational in all weather.

• Green Energy.
Disadvantages
• Infrastructure cost may be high.
• Too labor intensive.

• Wind turbines can’t operate in high or low wind speeds.
• Not for Large scale production.
Need for research
Research and development efforts in solar, wind, and other renewable
energy technologies are required to continue for:
• improving their performance.
• establishing techniques for accurately predicting their output.
• reliably integrating them with other conventional generating sources.
Conclusion
Solar Photovoltaic (PV) – Wind Turbine (WT) Hybrid System is the best
way to utilize not just one local available RE resource but multiple
renewable RE resources, so that remote located village communities,
with no hope for any future grid connection, can consider to tap into
their own local renewable energy resources and convert them through
various contextualized renewable energy technologies into useful
energy services.
References
• http://en.wikipedia.org/wiki/Photovoltaic_system#Hybrid_systems
• http://en.wikipedia.org/wiki/Hybrid_renewable_energy_system

• http://energy.gov/energysaver/articles/hybrid-wind-and-solar-electric-systems
• Local PV-Wind Hybrid Systems Development for Supplying Electricity to Industry by J.B.V.
SUBRAHMANYAM, P.K. SAHOO and Madhukar REDDY.
• http://www.rids-nepal.org/index.php/Solar_Photovoltaic
Thank You

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PV-Wind Hybrid Systems Guide

  • 1. Visit www.seminarlinks.blogspot.in to Download PV-Wind Hybrid Systems
  • 2. Introduction It is type of hybrid energy system consist of a photovoltaic array coupled with a wind turbine. This would create more output from the wind turbine during the winter, whereas during the summer, the solar panels would produce their peak output.
  • 3. Photovoltaic (PV)- Wind power • Photovoltaic (PV) cells are electronic devices that are based on semiconductor technology and can produce an electric current directly from sunlight. • The best silicon PV modules now available commercially have an efficiency of over 18%, and it is expected that in about 10 years’ time module efficiencies may rise over 25%. • Wind power is electricity produced by a generator, which is driven by a turbine according to aerodynamics in flowing air.
  • 4. Specific site conditions • The PV-wind hybrid system suits to conditions where sun light and wind has seasonal shifts. • In summer the daytime is long and sun light is strong enough, while in winter the days are shorter and there are more clouds. • Inverters can also provide a utility inter-tie between the system and the utility grid.
  • 5. System Components • A photo-voltaic solar-cell array • A mast mounted wind generator • Lead-acid storage batteries • An inverter unit to convert DC power to AC power • Electrical lighting loads and electrical heating loads • Several fuse, junction boxes and associated wiring • Test instruments for measuring voltages, currents, power factors, and harmonic contamination data throughout the system.
  • 6.
  • 7. Photovoltaic (PV) modules • Photovoltaic (PV) modules convert sunlight into direct current (DC) electricity. • Modules can be wired together to form a PV array that is wiring modules in series the available voltage is increased and by wiring in parallel, the available current is increased. • A typical PV module measures about 0.5 square meters (about 1.5 by 3.5 feet) and produces about 75 watts of DC electricity in full sun.
  • 8. Wind turbine • The three-bladed wind turbines are operated "upwind," with the blades facing into the wind. • The other common wind turbine type is the two-bladed, downwind turbine. • Utility-scale turbines range in size from 50 to 750 kilowatts. • Single small turbines, below 50 kilowatts, are used for homes, telecommunications dishes, or water pumping.
  • 9. DC-AC inverter • DC-AC inverter changes low voltage direct current (DC) power, which is produced by the PV or wind turbine or stored in the battery into standard alternating current (AC) house power that is 120 or 240VAC, 50 or 60 hertz. • The “modern sine wave” Inverters supply uninterruptible power, i.e. there are no blackouts or brownouts. • The inverters come in sizes from 250 watts to over 8,000 watts.
  • 10. PV modules mounting and wind turbine tower • The PV modules mounting can be a ground mount that works either on rooftops or the ground, or pole mount for getting them up in the air. • Trackers are another PV mounting option, which are pole mounts that automatically adjust themselves so that the PV could face the sun throughout the day. • Because the wind turbine should be mounded into non-turbulent wind, a tall enough wind turbine tower is needed (9 m above anything within 120 m). • There should also be enough space to properly anchor the guy wires.
  • 11. Safe Equipment • Safe equipment includes over-current and lightning protection components. • Over-current protection components such as fuses and fused disconnects protect the system's wiring and components in the event of short circuits. • Fusing protects from overcurrent situations, and disconnects allow safe shutdown of system components for maintenance and repair. • Commercial lightning arrestors are available to help protect RE system electronics against the lightning.
  • 12. Meters and Instrumentation It helps in keeping track of important things like: • The battery voltage • The amount of power they are currently consuming • The state of charge in their batteries • Also how much electricity traffics between a supply systems to the utility grid for grid connection situations.
  • 13. Batteries • Batteries store electrical energy produced by RE resource in a reversible chemical reaction. • Most batteries employed in RE systems use the lead-acid batteries typically encased in plastic and wired together in series and parallel strings by the installer. • A typical 12-volt system may have 800 amp-hours of battery capacity. • This is the equivalent of 1,200 watts for eight hours if fully discharged and starting from a fully charged state.
  • 14. Charge controller regulator • It prevents the PV array and wind turbine from over- charging the battery. • Most modern controllers maintain system voltage regulation electronically by varying the width of DC pulses they send to the batteries (this is called pulse width modulation or PWM). • Another category called "shunt type" controllers divert excess energy into a "shunt load.“ • A new generation of PV controllers has "maximum power point tracking." They take advantage of the maximum power available in the module by adjusting current and voltage.
  • 15. Backup Power Resource It can come either from a generator or from the utility grid when too much energy is consumed or when there has not been enough renewable energy coming into the system.
  • 16. Establishment Of A Wind/Pv Hybrid Unit
  • 17. The DC voltage measured across each PV unit (12 V DC)
  • 19. Advantages • Best for Remote Area Power Systems (RAPS) • Two different energy sources provide a diversity of supply, reducing the risk of power outages. • Can be used for 24-hrs power generation. • Operational in all weather. • Green Energy.
  • 20. Disadvantages • Infrastructure cost may be high. • Too labor intensive. • Wind turbines can’t operate in high or low wind speeds. • Not for Large scale production.
  • 21. Need for research Research and development efforts in solar, wind, and other renewable energy technologies are required to continue for: • improving their performance. • establishing techniques for accurately predicting their output. • reliably integrating them with other conventional generating sources.
  • 22. Conclusion Solar Photovoltaic (PV) – Wind Turbine (WT) Hybrid System is the best way to utilize not just one local available RE resource but multiple renewable RE resources, so that remote located village communities, with no hope for any future grid connection, can consider to tap into their own local renewable energy resources and convert them through various contextualized renewable energy technologies into useful energy services.
  • 23. References • http://en.wikipedia.org/wiki/Photovoltaic_system#Hybrid_systems • http://en.wikipedia.org/wiki/Hybrid_renewable_energy_system • http://energy.gov/energysaver/articles/hybrid-wind-and-solar-electric-systems • Local PV-Wind Hybrid Systems Development for Supplying Electricity to Industry by J.B.V. SUBRAHMANYAM, P.K. SAHOO and Madhukar REDDY. • http://www.rids-nepal.org/index.php/Solar_Photovoltaic