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charging a capacitor with small voltages

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wazi210113

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chargin a capacitor

Hi,
I’ve got a flywheel driving the rotor of a dc brushless dc motor, and I want to store the generated electrical energy to a reservoir capacitor.
The question is that how can I take out all the energy out from the rotary energy of the flywheel. As we know, while charging up the capacitor, the rotational speed of the flywheel reduces, hence the induced voltage at the generator output reduces, and the current cannot flow into the capacitor.
Are there any solutions can conquer this problem?
Thanks.
 

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