Wind Power in INDIA |
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Small and Medium Size Wind Generators
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The working principle of the wind generator:
Our wind generators are designed to provide utility grade power for domestic
purposes. They provide power for light, TV, computer, small machinery,
kitchen appliances, and also water pumping.
The wind generator utilizes the power of the wind to produce electricity. With increasing wind speeds the power output of the generator increases. The minimum wind speed required is 3.1 m/s (11.2 km/h). The rated output of 5 kW is reached at wind speeds of 10.5 m/s (37.8 km/h).
The generator output current is passed through the wind-turbine-controller,
which produces a DC current of nominal 120 Volt to charge a battery bank.
The battery bank (usually lead acid, tubular type) is used as a buffer
and storage device. With the help of an inverter power can be drawn from
the batteries at 220 V, AC (in single phase or 3 phase, as desired).
The wind generator can also be used for running directly
a water pump.
The wind generator is designed to withstand wind speeds up to 180 km/h.
It is protected against high wind speeds by a specially designed tail-vane
arrangement. When the wind-speed exceeds the normal operating conditions,
the tail-vane will fold horizontally inward toward the rotor, thus turning
the rotor out of the wind. This is achieved fully automatically. In case
of cyclonic storm warnings, it is however recommended to take preliminary
precaution
and shut down the wind generator.
In the standard configuration the wind generator is mounted
on a 20-meter high freestanding lattice tower.
The wind generator requires very little maintenance. It should be inspected
at regular intervals (4 weeks) to verify the proper functioning and visual
and acoustic checks should be carried, which would reveal any abnormalities.
The “Genie controller” of the wind turbine is mounted
in a separate cabinet and it fulfills several tasks.
- It converts the wind generator output of 3 phase variable frequency
and variable AC voltage into a regulated DC current to charge the battery
bank.
- It monitors the battery charge condition and protects it from overcharging.
- It dissipates excess power from the Wind Generator if the battery is
fully charged (dump load)
- It can control and regulate the charge of the battery through a SPV
array if the generator is set up in wind-solar-hybrid mode.
- It monitors and records the performance of the wind generator and any
device connected to it (power metering, generator performance, wind speed
etc.)
- 5 more channels are available to monitor other data, such as temperature,
rainfall or humidity.
- The Controller provides integrated data logging and 1 year data storage.