Brushless Hub motor as 3 phase generator

Example of using a Golden Motors 48v 500w brushless hub motor as a generator. Hub motors make excellent generators as they produce useable voltages at very low RPM. Just turning the pedals with one hand (~110 rpm at motor) it can produce 15v @ 3 amps (45 watts). Brushless motors are 3 phase and require rectification with 6 diodes or (1 1/2) bridge rectifiers. Pick one that is designed more for torque then speed, 8-9 rpm/volt works best.

More Videos...


DIY Pelton Hydro Power with a 500W EBike Hub motor
Used a 500W hub motor and some spoons to make a pelton turbine hydro generator. This is the working generator running off of a garden hose. The plan is to take it up to the gold claim and use it to power the cabin and charge the batteries that I use in my wash plant.





500W 24V brushless hub motor max 165RPM high torque
500W 24V brushless hub motor max 165RPM high torque. You can also see two 120W Winmate ATX power supply that power the motor. Song is from Youtube "free" audio library and the name of the song is Speed Trap by DJ Armbuster Lewis.





Eje electrico . 2 Hub motor working as geneartor and motor.
Probando 2 motores BLDC al eje. Al giar uno comienza a girar el otro. Similar a un eje eléctrico. Uso potencial en sistemas transformacion de energia mecánica a energía mecánica. 2 hub motors connected each other . If one of them is turned the other is electrically feeding starting to turning too. There is no batteries neither power source.





Otherpower Low RPM alternator
Just a short demonstration of the same low rpm alternator we would normally use for a 10' diameter wind turbine. This one is built on a stand with a hand crank so folks can get an idea about the work involved behind producing a bit of power to perhaps light up a bulb or... This sort of alternator might be useful for other power generating experiments... mostly it's for fun and education. I expect they'd work great for your overunity motor generator experiments and low rpm vertical axis wind turbines! (just kidding). This particular alternator (And there are other configurations possible) will produce 12 Volts at about 65 rpm, 24 volts at 130 if it's unloaded. If it were setup to charge a 24 volt battery, we'd get about 700 Watts at 400 rpm. The limit for this particular machine is about 30 amps at which point it would be down to about 60% efficiency. At lower current levels it is more efficient. Lots of fun anyhow!




Follow