Running a car alternator with a car battery?

the car alternator that i have don't have any magnets inside. it is not a universal ac/dc motor because when i hooked up car battery to it. it wont run. how does it run in the car.

is there any circuit that i need to make to make the motor run here is the pictures that i took

there is only a F written next to the green wire and a N on the top right of the motor just after the green wire.

the white wire is very thick

Picture of Running a car alternator with a car battery?
sort by: active | newest | oldest
frollard6 years ago
It's not a motor.

It's an AC generator (alternator) that creates AC current when rotated. There are no magnets because both the rotor and stator are ELECTRO-MAGNETS. A tiny 'prime' current is applied to give the coil it's first magnetic field, which is used where the permenant magnets would be used in a PM motor. Then, that field induces a current in the other coil, which extracts energy from the rotating motion.

To drive it you need to rewire the brushes/etc to apply current in the right timing rather than extract it.
ARJOON (author)  frollard6 years ago
the rotor is just a number of iron cores glued together. there is no coil.
anyway, i must excite the coil to generate more power when rotated.
so can i use it in a wind turbine with an appropriate controller.

by the way, is this your photo frollard???
frollard ARJOON6 years ago
Yes, it is a picture of me. People think its a stock photo because it's so awesome but really thats me!

In order to use an alternator as a turbine, you really need to spin it at the rpm's it was designed for, ideally in the 1000+ range...Otherwise it won't excite enough to generate efficiently. That's the beauty of the permenant magnet generator - it's output is directly proportional to the input power.
Wow. Great explanation there Frollard.
lemonie6 years ago

It won't turn on DC, but your comment suggests that you actually want to use it for the design-purpose of generating electricity?