Teacher :What device can store the wind power generated energy?

Kimura :The wind power generated energy should be stored in windmill itself, I think.

Teacher : Why? ...Kimura san, The wind has died down!Then what device...?

Kimura :Cut off the coupling between the windmill and generator

and set the pitch angle of blades to zero.

Then the windmill can store the momental energy as a large flywheel!.

Teacher :Kimura may persist to interrupt my lesson....!

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No.418 10/06/23 エネルギーを溜めるモノは?