Designing of off grid solar system

[Mian Jee]

what will you suggest if i run this pump without batteries.
About inverter size and array setting
220 volts are used in Pakistan
frequency 50 hertz

@syedbukhari, How can i contact you?, shah jee.

[russ]

@syedbukhari, How can i contact you?, shah jee.

Have the discourse on the site for all or not at all.

[syedbukhari]

For the 5 HP pump, you can use amorphous panels, just connect series of them to have the grid voltage ( if it is 230 V 50 Hz, I don't know) you will need 230*SQRT(2)=330 Volts aprox. Then connect others series in parallel to reach the amps needed.

Then connect the output from the solar pannels to the DC input of the VFD and you have it, connect the electrical motor in a star configuration if it is rated to 230 V star. The VFD will do the rest.

Wedge.

I try this and it works vey well but the only problem is that we have to adjust the frequency manually. Vfd do not control the frequency as the radiations goes up and down.

Kindly also guide is it possible that VFD itself control the speed of the motor as the radiation varies.

Many thanks for your battery less solution suggestion.

[Mike90250]

Dear sir,
For the 5 HP pump, you can use amorphous panels, just connect series of them to have the grid voltage ( if it is 230 V 50 Hz, I don't know) you will need 230*SQRT(2)=330 Volts aprox. Then connect others series in parallel to reach the amps needed.....

@ wedgeantilles If you have not run this sort of high power system, please refrain from advising neophytes un-tested theory.

There is no practical way to run a 5 hp 3 ph pump from a small or moderate solar system. You are better off getting a generator to run it. It WILL NEVER run directly off solar panels, without a VERY expensive system, and then, only in full, bright sunlight for a couple hours only.
engineering (best case) 750watts = 1 hp. That's 3750 watts, in a perfect, loss free system, and much more in real life.

[Sunking]

@ wedgeantilles If you have not run this sort of high power system, please refrain from advising neophytes un-tested theory.

There is no practical way to run a 5 hp 3 ph pump from a small or moderate solar system. You are better off getting a generator to run it. It WILL NEVER run directly off solar panels, without a VERY expensive system, and then, only in full, bright sunlight for a couple hours only.
engineering (best case) 750watts = 1 hp. That's 3750 watts, in a perfect, loss free system, and much more in real life.

I think we tarred and feathered this moron imposter a couple of years back and he has not been back since. Learned his lesson to never come here again.

[inetdog]

I think we tarred and feathered this moron imposter a couple of years back and he has not been back since. Learned his lesson to never come here again.

Dereck, your use of "moron" in this case is both insensitive and a slander on morons.

[Sunking]

Dereck, your use of "moron" in this case is both insensitive and a slander on morons.

Tell you what I will give you a dime so you can call someone who gives a chit.

[russ]

Dereck, your use of "moron" in this case is both insensitive and a slander on morons.

Goof one! In Argentina the term is jarco - meaning dumber than dumb - not that anyone cares