Can Rechargeable Batteries Power Industrial 3 Phase DC Motors Efficiently?

Hello,

I know rechargeable batteries can power homes and high power vehicles but my knowledge in the electrical side of engineering is limited so my question is, for example could an industrial 3 phase DC motor be powered with similar technology?

Craig.

Craig...I'm not the expert here but hopefully one of the power guys will reply before long.Basic answer is Yes - pretty much anything can  be powered from batteries.  3 phase DC motors exist but are usually in lower power things like tape drives etc.  It is only a matter of generating a 3-phase power drive for the motor.If you mean an industrial 3-phase AC motor the answer is also Yes.  Here is Australia we have just got a 100 MW (that's Megawatts) battery storage facility that can store renewable energy (from Solar / Wind) and release it at night or during peak usage.    You could do this on a smaller scale for motors in the kilowatt range.Variable frequency drives(VFDs) fall into this category - they take DC or single phase AC and output a 3-phase drive of variable frequency to power 3-phase AC motors (3 phase AC motors are much easier to speed control like this than single phase motors).I'm sure someone else with more experience in this field can give you more detail?

This type of voltage battery is used for power backup in an industry like the largest battery storage power station is the Hornsdale Power Reserve adjacent to the Hornsdale wind farm, built by Tesla. Its 100 MW output capacity is contractually divided into two sections: 70 MW running for 10 minutes, and 30 MW with a 3-hour capacity. Samsung 21-70-size cells are used.