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Application of Power Electronics in Renewable Energy Systems
Transcript of Application of Power Electronics in Renewable Energy Systems
What is Renewable Energy
Why should we adapt Renewable energy Systems?
Application of Power Electronics in Renewable Energy System
Renewable energy sources are sources of energy that are naturally replenished
This includes Sunlight, Wind, Rain, Tides, Geothermal heat
Renewable energy sources does not effect or pollute the environment
Global consumption of energy has grown up by 44%
Primary sources of energy are non renewable sources of energy
Depletion of this source of energy is irreversible
Why Power Electronics?
Over the last few years there has been a lot of development in the power semiconductors devices.
Many innovative equipment have been developed.
Hence semiconductor-based power conversion represents a
key enabling technology
to meet the challenges of tomorrow’s electricity supply
Power electronics technologies have been widely used in renewable energy systems like
hydro power, municipal solid wastes, biomass, geothermal, solar thermal, solar photovoltaic, wind power and tidal waves
Wind energy is the most common Renewable source of energy
Wind power, is an alternative to electricity generation methods using fossil fuels like coal
Energy generation using wind does not have ill effects on the environment
Also non-renewable sources are not eco-friendly.
This leads to greenhouse gas emissions which in turn leads to Global Warming.
Hence more and more efforts are made to adapt Renewable Energy systems.
Solar photovoltaic are completely based on the solar energy conversion principles
There are many types of single and polycrystalline crystals are used in it
These crystals provides 14% to 20% efficiency
The recent developments are discovered of the crystals having 7% to 9% power efficiency
Structure of Photovoltaic System
There should be more use of this energy system in countries where there is ample sunlight
Increasing the working efficiency
Decrease in cost
The energy conversion efficiency is highest compared to the other energy sources
Hence this is considered as the future energy source
It can be used for variety of applications like transportation, stationery and portable power
It converts chemical energy from a fuel into electricity through a chemical reaction with an oxidizing agent
The components used in a fuel cells are hydrogen, steam methane, hydrocarbons and alcohols like Methanol
Use of Power Electronics in Fuel cells
The output voltage is low dc and in many cases line frequency ac is required, this requires voltage step up and dc-ac inversion
To meet the dynamic load changes, energy back up is required
This is where Power electronics is used
Fuel Cell based energy Conversion System
Energy conversion System using Dc-dc Converter
TIME FOR INTERACTION
Energy Power Conservation
Process of Renewable and Distributed Energy System
Types Of Rectifiers
Basic Inverter Circuit