Rotation Speed Fan

Depending on the size of the E-motor you can increase the frequency

I have a little experiment running here.

A 35 watt 220v ceiling fan on 50 HZ normal speed.

Bought a US$ 20,- 12v DC / 220v AC (180w) Invertor , attached it to an 12v carbattery charger

opened it and with the potmeter I increased the speed to 97 Hz.

total speed is appr. doubled, voltage the same , current rating is up 2 %

only the torque is a little lower say 15 %

Helpfull ?

T L

Please be aware that, as a rule-of-thumb, the power consumed by a <...fan...> is proportional to something like the cube of the impeller tip speed. The motor will either need to cope with this, or be replaced, along with its wiring, motor protection and circuit protection; doubling the speed, for example, increases the power demand by a factor of around 8.