Facebook
Google
GitHub
Linkedin
Neat conversion.
Max.
Spare Alternator??
- Thread starter MaxHeadRoom
- Start date
Never saw them done quite like that. Most of them take the rotor winding's out and replace them with ring permanent magnets. They first were done with speaker magnets until someone started making Neo type rings in the correct size. They also use those magnets when making wind generators from car alternators.
If wired as wye instead of delta, could a higher battery voltage be used -respecting the inverter limits- ? What about the winding limitations ? Wye twice the delta ?
That would translate in smaller current drain with the same horsepower, right ?
What is the effect of raising the field voltage winding here ? More torque, or more speed, or... ?
That would translate in smaller current drain with the same horsepower, right ?
What is the effect of raising the field voltage winding here ? More torque, or more speed, or... ?
Most of them claim 3 to 5 HP, depending on the alternator. Most also use a GM 10SI or 12SI alternator.
Higher field current = higher torque.
Max.
I think his video said his controller was 1500W. I doubt the alternator could sustain much more than that without roasting.
That is because he is still using the DC powered rotor.
He is using 12v on the rotor, in an alternator setting, it vary rarely hits 12v due to the regulator.
Max.
Max.
If he is using the full 12V on the rotor he is using more than twice what a normal alternator uses. They are usually in the ~5V range on the rotor winding's.
Yes, the modern regulators now are usually PWM into the field so the mean current will vary with the 12v PWM.
The first electronic ones were an exact electronic representation of the mechanical version but caused radio interference, hence the conversion to PWM.
Max.
The first electronic ones were an exact electronic representation of the mechanical version but caused radio interference, hence the conversion to PWM.
Max.
I just don't think you can expect more than 2HP or so from a package that size, on a sustained basis. Maybe with water cooling and such. And let's face it - getting 2HP out of the battery for any length of time isn't trivial either.
Here's what a genuine 5HP electric motor looks like.
https://www.ebay.com/p/Baldor-D2005...Dpfgdefg-DC-Motor/1710591563?iid=272203848911
Last edited:
Think your doing one of those apples to oranges things using that as an example.
In effect they are making the alternator into a BLDC motor, that is more efficient than an AC motor. That is why more and more appliance and power tool motors are now BLDC, more power in a smaller package.Maybe so. I remain skeptical until I see some data. I can’t imagine pumping 3000 watts into that thing without something going poof.Think your doing one of those apples to oranges things using that as an example.
