Standalone hybrid generation system for the remote area of Thar, Pakistan
- Requires relatively little maintenance.
- Longer life-time (up to 30 years).
Disadvantages
- Interference with radio/TV signals if located inappropriately.
- The wind doesn’t blow all the time at required speed.
- High initial cost.
The main components of a wind turbine are the rotor of the turbine, which is the prime mover, and the
induction generator. The rotor is connected
to the generator via a gearbox,
which matches and
enhances the rotational speed. As the wind does not blow all the time nor does the sun shine all the
time, solar and wind power alone can be poor power sources for a long time energy supply.
Hybridizing solar and wind power sources together with storage batteries to cover the periods of time
without sun or wind provides a realistic form of power generation.
2.3.1. Wind Energy Conversion System
The proposed system consists of a variable speed wind turbine, an interior type
permanent magnet
synchronous generator and a PWM controlled rectifier. The
variable speed wind turbine
captures aerodynamic power from the wind. The interior
type synchronous generator
converts this wind power to useable electrical power. The PWM controlled rectifier is used to
capture optimum aerodynamic power by controlling the generator’s rotor speed. The
structure of the wind energy conversion system is shown below: -
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