Nature has given sunlight
in abundance to mankind. Solar energy and wind energy are mostly
available throughout the year. An equipment working on solar
and wind called Wind- Solar Hybrid System can generate electricity.
Solar energy is available only during day-time whereas wind
energy is available throughout the day depending upon the atmospheric
Wind and solar energy are complementary to each
other, which makes the system to generate electricity almost throughout
the year. The main components of the Wind-Solar Hybrid System are
wind aero generator and tower, solar photovoltaic panels, batteries,
cables, charge controller and inverter.
The Wind -Solar Hybrid System generates electricity that can be used
for charging batteries and with the use of inverter we can run AC
Wind aerogenerator is installed on a tower having a minimum height
of 18 mtrs. from the ground level. Because of the height, the aerogenerator
gets wind at higher speed and thereby generates more power.
Wind aerogenerator starts generating power
at a cut-in speed of 3.1 m/s. The aerogenerator generates three
phase AC power, which is converted into DC through the charge
controller. The solar photovoltaic panels generate DC power,
which is connected to the charge controller. The generated DC
power is then stored in the battery bank. The batteries require
minimum maintenance and their life is around 5-6 years. The
stored power of the batteries is connected to utility through
pure sine wave high efficiency inverter, which converts D.C.
power into A.C.. Various instruments are incorporated in the
system for controls, safety and indication.
The energy meter displays power consumed by various
gadgets. Necessary precautions are taken to protect the aerogenerator
from damage due to excessive wind speed.
Both the aerogenerator and PV system are regulated through EZ wire
control module to control battery charging. Over charging and deep
discharge of batteries are regulated in the control module and overcharge
is diverted into DUMP LOAD for protection. Electricity stored in the
battery is converted into AC through inverter and is utilized for
light, fan, computer, fax machine etc.
The Wind-Solar Hybrid System is particularly
useful where conventional power is difficult to procure due
to high costs and where power failures are frequent. It has
proved to be a boon at such places. It has different capacities
ranging from 400 Watts to 10 KW . On clear sunny days, the system
will produce 2.5 to 3.0 units per KW of the installed capacity.
However, it depends on the wind speed and solar radiation available
at the particular site. The approximate cost of the system is
Rs.3.00 to 3.25 lakhs per KW. MNRE provides subsidy of 50 to
75% of ex-works cost for different categories of beneficiaries.
Total of 588 KW capacity (117 Nos.)
systems are installed in Maharashtra since inception of this programme
from 1998 to 31/07/2009 and MEDA has floated tender for 120 KW wind
hybrid system at 15 sites in state of Maharashtra. MEDA & Z P
Kolhapur jointly has floated tender for installation of 293.5 KW wind
solar hybrid system for running the street lighting system at 90 grampanchyat
area of Gadhinglaj block, Kolhapur district. The beneficiaries who
have installed the Wind-Solar Hybrid System include the Govt., Semi-Govt.,
trusts, private institutions, academic institutions etc. The demand
for the system is on rise and it is becoming popular as an alternate
system for conventional power.
MEDA has installed a system of 11.2 KW capacity (wind - 3.2 KW and
SPV -8.0 KW). It generates around 25 units per day. It was commissioned
in December 2001. 27 Nos of computers and 5 printers are connected
List of Installation of Wind Solar Hybrid System in Maharashtra and
List of registered Manufacturer /Dealers