January 12, 2009
Scheme lets wind turbines store
a wind turbine speed up when the wind is stronger than average and
you have a way to store wind energy and smooth the flow of electricity
from wind farms to the grid.
A proposed wind turbine control algorithm lets a turbine spin
faster in stronger than average winds rather than generating more
electricity. The turbine's inertia stores the excess wind energy just
like a flywheel. When wind speeds dip below average the control algorithm
slows the turbine, which converts the stored energy to electricity.
Wind is variable, which makes electricity from wind farms
variable. Researchers are working on storing wind energy to make wind
farms a more predictable and reliable source of electricity for the
grid. The control algorithm removes the need for separate storage
systems like batteries, capacitors and flywheels.
Power Smoothing Using Rotor Inertia Aimed at Reducing Grid Susceptibility
International Journal of Power Electronics, 2008
Power Electronics and Motor
Drives Laboratory, University of Wisconsin-Milwaukee
Related stories and briefs:
can handle renewables -- related study
Back to ERN
January 12/19, 2009
Energy-related books and products