Paul Lamar wrote:

This is either a Honda or Toyota hybrid motor/alternator. I took these
pictures at the Tokyo Motor Show last October.
Note the rectangular wire. Doug might find one of these in a Japanese
junk yard some place. Should be plenty of them in US junk yards in
a few years when the expensive batteries die.

Don't hold your breath on that last statement. I'm under the impression
that when the very expensive battery pack dies, it is in actuality a
single cell or two in the pack that dies. So a profitable core exchange
program is likely, and field repairs are perhaps a possibility.

That said, hybrids are involved in car crashes, too. So I'd expect to be
able to harvest this component from crashed hulks.

Russell Kent

Russ

The possibility of course exist but why you would want to I don't know. It
would heavy for a car to carry much less an airplane. Voltages of these
motors are commonly over 200v.

Our wind generator. uses similar wire and is rated at  out 1.5KW at 1500
rpms @ 25volts dvc. It is a syncro. 3 phase PM generator. About the size of
your two fists together.  We have had the output up to 4.5 Kw but it starts
to get a tad hot.  All this talk is academic though. Weight rpms, size and
power levels of outputs are also important for our use. Perhaps best to
design the unit to fit in the bell housing at the amperages we need and no
more or ... modify an existing unit on the market.  I do have a flat wire
100 amp output Toyota Lexus alternator that has a stator OD of about 6
inches and is less than 2 inches thick.  For inside the bell housing it can
be much thinner.

Talk to Mistral. I've had this discussion with Francios 6 months ago.
Needs defines the design. At first, I thought I would design the motor and
alternator to do double duty. I have since seen that this an expensive heavy
way to do it if it is direct drive.  The amount of amperage  a direct drive
motor in a 24vdc nominal system will require will  be over 100 amps.
However a 3hp.starter/generator  has a mechanical advantage through its
gearing built into the starter function and as it is not PM technology it
doesn't see this current for the same amount of time. A direct drive has to
depend upon the electro magnetic torque applied to what ever arm you can fit
in the bell housing.

IMHO the French Valeo starter generator is a good primary unit. I haven't
got one in my hands now so I can't speak about details.

How much do we need for a back up alternator 30, 40 70 amps?  How and where
to dump the load to.  Two batteries? Switch between them - time sharing? .
Control issues are something I haven't even started to think about.  This
sounds like a good project for Audrey:)


Doug in Japan

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