22kw Well pump

STH Solar

I have 22kw water pump that I want to run of PV.
What size panels should I use?
Do I drive the motor with an inverter or a VFD?
If VFD, then how do I program it?

westbranch

Re: 22kw Well pump

Make, model, amount of water to be pumped, in daylight or 24 hr per day and location of this project will help start the discussion... also availability of PV and charge controllers etc.

mike95490

Re: 22kw Well pump

That's a HUGE pump, and will need a lot of expensive solar panels. 22KW ? are you sure?

BB.

Re: 22kw Well pump

Perhaps you can find some starting infomration in these threads:

BB. wrote: »

Some discussions about VFD (Variable Frequency Drives)... Basically a variable frequency inverter with (typically) three phase output. Used to soft start motors (handy for 3 phase well pumps, or pumps with well head starting capacitor) and can also turn an AC motor into a variable speed motor (very handy for pumping applications).

WELL PUMP and Inverter QUESTION
Wind/solar for large scale pumping etc (out of my depth!)
could use knowledge - using Gould jet pump - transfering from 230vAC to ? DC (new link/thread 10/27/2012)
Help required to design off grid system (information on possibilities to connect "standard VFDs direct to solar panels) (new link 1/13/2013)

-Bill

The last one is real interesting. Using a "standard" (I think) VFD directly fed from solar array (out of Pakistan). Poster left a little information out of the final design.

-Bill