I would like to Generate power with this motor but it isn't working. I made a 3 phase rectifier but it isn't working. I'm spinning it at 1000 RPM does it need to go faster to light the led?

 

What you have is what looks to be a drone motor. This drone motor in fact.
Item name: 2205 2300KV Brushless Motor
RPM/V: 2300KV
Height: 31.5mm
Width: 27.9mm
Shaft diameter: M5
Motor mount hole size: M3
Weight: 28 grams
Voltage: 2-4S
Battery: 2-4S lipo battery
Usage: for 250 260 280 Multirotor Frame Kit
CW screw thread motor comes with silver cap
CCW screw thread motor comes with black cap

Since yours is labeled CCW it was designed for CCW rotation. The other part is the ESC (Electronic Speed Controller). I think (operative word is "think" these are brushless DC motors and I am not sure exactly how the ESC works. I don't know if the ESC provides three phase power to the motor or if one of the three large black wires is a tach speed feedback.You can find more info here.

Per your picture it should work if the motor outputs three phase power. I am not sure what the output voltage is but the RPM/V is telling as to how fast the motor turns per volt. I am not sure at the speed you are spinning it you will have enough to overcome the forward voltage drop of your diodes.

Hopefully another member know more than I can contribute.

Ron

 

The motor appears to be a normal 3ph outrunner motor and the rated rpm is 2300 per volt applied, you will need at least that to generate 1v.
http://learningrc.com/motor-kv/
These motors are made for very high current at low voltage.
The one you have is bi-directional but it is operated unidirectional due to the direction of the prop threads.
Max.

 

first of all that LED will need a current limiting resistor.
red LED needs some 1.7-2.2 V top operate.
also rectifier diodes have Vf of about 0.6V and two of them are conducting at any time.
so to get LED working your motor need to generate at least 3.4V or so.

your motor produces 1V at 2300RPM so speed is too low and generated output is some 0.4V. you need some 8000+ RPM in this case

 

Hello Chris, it also looks like your LED is the wrong way around? Judging by your diodes, the LED cathode should be towards the front of the picture, but I can't see the flat side of the LED... could just be the pic, but worth checking with a multimeter.

 

Maxheadroom is right these are designed for high speeds and high currents ,low voltage and very high power ....

I think a stepper motor might work better ...

 

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If its a DC motor shouldn't it generate DC? Do I need a rectifier to get DC to charge a battery?

 

It is a BLDC (Brushless DC) the voltage is induced in the stationary coils via the rotating magnets, so the output is AC 3 phase.
You need the 3ph rectifier.
The top picture shows the generated BEMF waveform from a back fed motor
Max.

 

These small brushless motors produce such high power you probably only need tap on one phase ...pick any too leads , put a diode in series and this will produce half wave DC .... add a capacitor to smooth.

This motor would be better suited ....

It's 320KV ....320RPM it outputs one volt ....3,200RMP outputs 10V it's designed for a skateboard .This small motor can generate or consume 1.8Kw , so again , you only need tap one phase... The only difference with the one you have is each coil has many turns of thinner wire , giving higher voltage but lower current .

There are 100's of different types on eBay ,you can select one with the KV to suit your needs ... You have to first be clear what voltage you need at what RPM.

 

One downside to 1ph is the 100% ripple, with 3ph it is only around ~5%.
Max.