Please correct me if I'm wrong, but do electric motors really need cooling. My machines at work have electric motors, they run nearly 8 hrs straight, every day. A couple of my machines are 17yrs old and orig motors still purr. Lust a little warm to the touch. The motors are encased in a housing and get no air at all. So, where is the friction heat coming from and what exactly would need to be cooled, the bearings?
They are oversized. They dont have to deal with peak loads of acceleration/regen... but most importantly, they dont have magnets.
Its the magnets that become the issue if heated too much. The AC motors in your work machines only have to worry about overheating the wire insulation, and that happens at much hotter temps.
So they size it oversized so that the windings can transfer the heat to the case and out to the air, without needing addtional fins. Thats also why an industrial "5hp" AC motor is huge, but I can wind out 5hp peak with a brushless motor that fits in my hand.
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Topic: Cooling down your motor and battery. (Read 8628 times)