Electric Motor Question?

I want to run a 20 HP 3-Phase AC Electric Motor from a battery bank. The Motor is rated at 240 Volts @ 64 Amps. I want to control the Motor through a variable frequency Drive With 240 volts DC from the Battery Bank of 20 12 Volt batteries. What size batteries should I use to run the motor at nearly full load (50 amps) for one hour?

Electric Motor Question?quick loan

These batteries would be huge to be able to supply the amount of amps you%26#039;ll need.

You%26#039;ll also want to get %26#039;deep discharge%26#039; batteries.

The best way to get the 3 phase power would be to get a DC motor- 3ph generator combo.

Also think, how will you recharge the batteries, since I assume you have no regular power there?

I have set such things up with using 240 single phase to 3 phase motor generators.

Electric Motor Question?

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Do you have a 3 phase inverter? You need to convert the DC to AC and then run through the VFD. I doubt that you are going to get 50A for a hour unless you parallel some more batteries with the ones you have in series. Deep cycle marine batteries would probably be your best choice.

Good luck|||I%26#039;m not an electrician, but if you can get a setup to work like that, you%26#039;ll need %26quot;deep cycle%26quot; batteries at least. Those are pricey... Where are you going to put the inverter?