14-08-2012, 12:35 PM
Power-Electronic Systems for the Grid Integration of Renewable Energy Sources
[attachment=31435]
Introduction
Increasing number of renewable energy sources and distributed generators
New strategies for the operation and management of the electricity grid
Improve the power-supply reliability and quality
Liberalization of the grids leads to new management structures
Power-electronics technology
Plays an important role in distributed generation
Integration of renewable energy sources into the electrical grid
Fast evolution, due to:
development of fast semiconductor switches
introduction of real-time controllers
Wind turbine technology
Wind-turbine market has been growing at over 30% a year
Important role in electricity generation
Germany and Spain
New technologies - wind turbines
Variable-speed technology – 5% increased efficiency
Easy control of active and reactive power flows
Rotor acts as a flywheel (storing energy)
No flicker problems
Higher cost (power electronics cost 7%)
[attachment=31435]
Introduction
Increasing number of renewable energy sources and distributed generators
New strategies for the operation and management of the electricity grid
Improve the power-supply reliability and quality
Liberalization of the grids leads to new management structures
Power-electronics technology
Plays an important role in distributed generation
Integration of renewable energy sources into the electrical grid
Fast evolution, due to:
development of fast semiconductor switches
introduction of real-time controllers
Wind turbine technology
Wind-turbine market has been growing at over 30% a year
Important role in electricity generation
Germany and Spain
New technologies - wind turbines
Variable-speed technology – 5% increased efficiency
Easy control of active and reactive power flows
Rotor acts as a flywheel (storing energy)
No flicker problems
Higher cost (power electronics cost 7%)