Hybrid inverter

1. BY,
ANUSHA K(1RG11EE006)
ARCHANA C B(1RG11EE007)
SREEJA N(1RG11EE030)
SREELAKSHMI K(1RG10EE038)

2.  Hybrid inverter is also known as smart grid inverter
 Hybrid inverter is a new generation of dedicated U.P.S (uninterepted
power supply) using renewable energy for home consumption ,
especially for solar photovoltaic installations.
 Renewable energy (solar energy , wind energy etc) sources plays an
important role in electricity generation.
 An inverter is an electrical device that converts direct current (DC)
to alternating current (AC); the resulting AC can be at any required
voltage and frequency with the use of appropriate transformers,
switching, and control circuits.

3.  Electricity from solar panels is generated only during the day , with peak
production around midday. This electricity is fluctuating and not synchronized with
the electric consumption of household . To over come this gap between what is
produced and what is required during the evening when there is no solar electricity
production , it is necessary to store energy for later use & manage energy storage
and consumption in an intelligent (smart grid).
 Hybrid inverters store energy only when necessary .
 Entire kit is controlled by only solar power. Solar panel consists of number of silicon
cells, when sun light falls on this panel it generate the voltage signals then these voltage
signals given to charging circuit. Depends on the panel board size the generated voltage
amount is increased. In charging circuit the voltage signal from the board is gathered
together and stored in the battery.

5.  This project is designed by following blocks
 • Microcontroller
 • Solar panel with battery.
 • Relay
 • Switching circuit and filter
 • control circuit
 • ADC/DAC

6.  Cost efficient.
 Reduce pollution.
 Low maintenance.
 Power management.
 Automatic system.
DISADVANTAGE
Solar energy is only available during day time.
Freqency adjusting is difficult.

7.  The wind & solar hybrid inverter consist of solar panel , wind turbine ,
controller , inverter & batteries , all of which can function independently
without utility power.
 The wind solar hybrid system are now being used widely in different fields
, like street lighting , traffic , telecommunications base ,large scale
billboards & home power.

8.  DC power source utilization applications include use of DC in motor
vehicles and from batteries to power AC loads and use of energy from solar
cells to power AC loads.
 . Use of inverters in uninterruptable power supplies (UPS) allows energy to
be stored as DC in batteries and used as AC when needed.
 In industrial equipment such as AC motor speed controls and induction
heating equipment AC is converted to DC and then converted back to AC
at a different frequency or an adjustable range of frequencies.
 Inverters are used in some battery powered electric vehicles and in hybrid
vehicles to change DC to adjustable frequency AC to control AC motor
speed.

9. 