Want to run 5KW AC motor at home

[vishal]

Hi All,

I want to rum 5KW AC motor using solar energy. Can some one please guide me what all equipments I require to achieve this and approx cost of these equipments.

Thanks

[Robert1234]

Wow. That's quite a load. I don't think you are going to like the answer, best get prepared.

What is the voltage requirement of the motor? 2-phase or 3-phase? How many hours per day will it run? If not running continuous, how many start/stop cycles will it run during the day?

[Sunking]

Not likely going to happen unless you are made out of money.

[vishal]

Lets reduce the load to say 5 HP....I don't always want to run it... may be like twice for 3 hrs in a day.....voltage requirement is 220V.....mainly I want to run a centrifugal pump using solar energy instead of attaching it with diesel engine.....one thought was instead of attaching a diesel engine I will attach a motor which will run by solar energy

[thastinger]

What is your location and do you need to run it in winter for the same number of hours as in the summer months?

[Sunking]

Lets reduce the load to say 5 HP....

5 hp or 5 Kw not any real difference. How much money do you have?

It will take all your money and then some you do not have. .

[Mike90250]

Hi All,

I want to rum 5KW AC motor using solar energy. Can some one please guide me what all equipments I require to achieve this and approx cost of these equipments.

Thanks

Big anchor bolts for the house , so it will not shift when you turn on the 5KW motor.

Seriously, that is a scary big motor, what is it doing in your house ? For 8.5 KWh used in my house, I have a 3KW PV array and big battery bank. It is quite expensive.

[Bazambo]

Stupid question, but are you talking about Air Conditioning, or an electric motor? If it's Air Conditioning, that I can answer. I have 53 panels 255w panels in Phoenix, and I have (2) 5 ton AC units. Only 1 is on during on-peak hours. I have a 4300 sq ft house. At 10am, once I'm making 8+ kWh, AC is "free". At 2:30-3pm, I fall just below 8kw and start drawing. My peak generation is just under 10kWh right now, so anything over that gets added to the on-peak bonus pile.

What did this cost? ~$26k.

If it's an electric motor, what does it really draw vs nameplate? As others have asked, 2 phase/3phase? If it's a 3 phase motor, do you have 3 phase service or are you running a phase converter which will eat up more juice?

[SunEagle]

Ahhh... 1 hp = 746 watts so a 5000 watt motor is about 6.7 hp which is not a big motor. But is a lot of watts for a solar pv system to run.

[Sunking]

Stupid question, but are you talking about Air Conditioning, or an electric motor?

Exact same thing. There is no difference between a motor and air conditioning.

The difference is you are connected to the grid to use as your battery. Your neighbors payed for most of the cost and now you reap the benefits of other peoples money for your luxury and comfort. You should be ashamed of yourself you GREEDY SOB. for spending my money without my consent.


The OP lives is a dirt poor country with high electric rates and cannot afford to have electricity ran to his motor. Even if he could afford it would be unreliable at best because of poor infrastructure. To run off grid requires several thousand pounds of battery and pay for it himself.

[Mike90250]

Ahhh... 1 hp = 746 watts so a 5000 watt motor is about 6.7 hp which is not a big motor. But is a lot of watts for a solar pv system to run.

In a perfect world, with no losses or power factor....

[SunEagle]

In a perfect world, with no losses or power factor....

Don't we live in the perfect world and who has the Power.