It is a type of hybrid energy system consisting 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. 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.
Preview PV-Wind Hybrid Systems PPT
Transcript PV-Wind Hybrid Systems PPT
1. PV-Wind Hybrid Systems PPT
2. PV-Wind Hybrid Systems PPT: Introduction It is the type of hybrid energy system consists 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. PV-Wind Hybrid Systems PPT: 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 inflowing air.
4. PV-Wind Hybrid Systems PPT: Specific site conditions • The PV-wind hybrid system suits to conditions where sunlight and wind have seasonal shifts. • In summer the daytime is long and the sunlight 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. PV-Wind Hybrid Systems PPT: 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 fuses, junction boxes and associated wiring • Test instruments for measuring voltages, currents, power factors, and harmonic contamination data throughout the system.
6. PV-Wind Hybrid Systems PPT: 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.
7. PV-Wind Hybrid Systems PPT: 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.
8. PV-Wind Hybrid Systems PPT: 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 a 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.
9. PV-Wind Hybrid Systems PPT: 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 the 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.
10. PV-Wind Hybrid Systems PPT: 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 the safe shutdown of system components for maintenance and repair. • Commercial lightning arrestors are available to help protect RE system electronics against the lightning.
11. Meters and Instrumentation It helps in keeping track of important things like battery voltage • The amount of power they are currently consuming • The state of charge in their batteries • Also how much electricity traffic between a supply system to the utility grid for grid connection situations.
12. PV-Wind Hybrid Systems PPT: Batteries store electrical energy produced by RE resources 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.
13. PV-Wind Hybrid Systems PPT: Charge controller regulator • It prevents the PV array and wind turbine from overcharging 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.
14. 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.
15. Establishment Of A Wind/Pv Hybrid Unit
16. The DC voltage measured across each PV unit (12 V DC)
17. PV-Wind Hybrid Systems PPT: Images
18. PV-Wind Hybrid Systems PPT: Advantages • Best for Remote Area Power Systems (RAPS) • Two different energy sources provides a diversity of supply, reducing the risk of power outages. • It can be used for 24-hrs power generation. • Operational in all weather. • Green Energy.
19. PV-Wind Hybrid Systems PPT: Disadvantages • Infrastructure cost may be high. • Too labor-intensive. • Wind turbines can’t operate at high or low wind speeds. • Not for Large-scale production.
20. 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.
21. 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 remotely 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.
22. 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
23. Thank You
0 comments