Re: [EE]:: Operation of water pumps from Wind Turbines

Brent Brown wrote:
> On 31 Mar 2025 at 21:33, RussellMc wrote:
> > TL;DR / Summary
> > 
> > Comments on the following are invited - especially the practicality
> > of using DC powered deep well water pumps to allow direct powering
> > of water pumps by wind turbines across a wide range of wind speeds.
> > Of significant uncertainty is the practicality of powering a 1-5 kW
> > range DC powered pump from a highly variable wind source, and the
> > ability to load the turbine close to maximally at all times to prevent
> > damage.
>
> Wind Turbine generates 3-ph AC, directly connected by cable to 3-ph
> induction motor water pump at bottom of well. That part is about as simple
> as it can be other than a fully mechanical drive, and you might argue that
> mechanical could be less reliable. Control system problem is all above
> ground. Gearbox or other dynamically variable connection between WT and
> generator to provide variable frequency/voltage/power to pump.
> (That sounds too simple, needs cleverness, this will be the area that
> makes or beaks the idea).

Wild idea: The transmission from a small vehicle would be appropriate
for this level of power. Subaru makes a rather reliable CVT. Suitable?

-- Dave