Essay On Hybrid System
Hybrid System and its Importance:-
Hybrid technology has developed and upgraded in the resent years, the importance and benefits of renewable energy source are unchallenged. Hybrid system used in many houses of rural as well urban areas. Since hybrid system is more economical than single renewable energy system hence many island installed hybrid system. The main function of hybrid system including solar, wind and storage battery system is shown in fig. 3.1.
Fig.3.1 Schematic diagram of hybrid system
In hybrid system wind power system and PV cells provide DC power. For the conversion of DC power obtained by solar and wind system a semiconductor-based device (power inverter) is used to convert the DC power in to AC power. This specific hybrid system shown in fig. 31 has many benefits such as:-
• Solar and wind power obtained by nature so no need
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The effects on the environment are generally less problematic than other power sources. 3.1.3.2 Classification of Wind Turbine
Wind machines, which used to harvest wind energy, are called wind turbines. Wind turbines are classified according to the orientation of their axes in comparison with the flow of the wind. There are various types of modern wind turbines, which are classified in to two main categories: A. Horizontal axis and B. Vertical axis turbines.
A. Horizontal Axis Wind Turbines
Horizontal axis wind turbines are mounted in such a way so that their axis parallel to the earth’s surface and to the winds direction (head on), but sometimes their axis can also be vertical to the winds direction (cross-wind). They operate with the blades in front of the wind (up-wind) or behind the wind (down-wind). They have many types of construction such single, two, three or a large number of blades. They cover about 90% of the installed wind turbines around the world.
Fig. 3.5 The horizontal axis wind turbine
B. Vertical Axis Wind
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