So I'm working on a project where I'm trying to stick magnets at the bottom of a spinning Vertical Axis Wind Turbine and have coils right underneath that stay still. So that as the magnets spin they pass over the coils generating AC (kind've how DC motors work). My question is how would I go about storing that energy into a LiPo battery? So far I'm thinking of using a full bridge rectifier to convert each of the coils to DC then attach a capacitor to smooth the voltage. I plan on doing that for each coil and then wiring the coils in parallel. From here I'm kinda stuck as to what I should do. Is there an IC to take the output voltage and connect it to a battery or some other solution I should know? Many thanks for the help.

 

For the simplest possible solution connect the output of the rectifier straight to the battery, then use a relay to put a short across the coil when the battery is fully charged. Turbines should not be run unloaded.
It may be even better if you wind it for three-phase, as there may not then be much need for any smoothing capacitance.
Lead acid batteries would be more forgiving than lithium. (i.e they wouldn't explode if you didn't get it switched off in time)

 

Or get an MPPT charge controller.

And use a permanent magnet DC motor as the generator, it will do far better than any coil / magnet contraption you are likely to create without a lot if research and experimentation.