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Storaging potential energy in supporting tower of wind turbine

Short description (max. 250 characters)
My idea is to convert generated power of a wind turbine, which is not needed at the time, into potential energy by lifting a weight in the supporting tower or using flywheels.
Only the utility provider is involved. No cooperation is needed.

Key benefits (max. 250 characters)
- large storage pontential
- short reaction time
- enables long-term storaging
- eases peaks of both power overproduction and underproduction

Detailed description (max. 500 words)
Wind turbines are generating electric power depending on the current wind speed. In case of power overproduction there is a limited possibility to storage energy in the DC link of the installed converter.

By lifting a weight in the supporting tower (and locking it again) it is possible to storage a huge amount of potential energy. The electric motor, which lifts the weight draws its power out off the DC link of the installed converter. If power is needed during still air it is possible to feed back energy by lowering the weight again. The electric motor works as generator during that time.

No DC link extension is needed to storage power. Furthermore there is no time limit to storage the energy.
Only a converter extension is needed to operate the electric motor.

Another way is using a number of flywheels, each connected to a electric motor. The storage capacity is much bigger than with the lifted weight. (Maybe read comments)

A utility provider can run a wind turbine with this kind of power storage without any cooperation.



Tags:
energy storaging, potential energy, storage, wind turbine

Categories:
Energy storage

Status

Status: in discussion

100 times viewed

16 Comment(s)


Number: 000091

submitted: 10.07.2012