THIS ONE'S FOR YOU OUman - IT IS FROM A VERY SINCERE AND NON-CONDESCENDING PhD FRIEND OF MINE.
I HOPE YOU ALL FIND IT ACCESSIBLE TO YOUR TINY INTELLECTS.

THIS IS IN RESPONSE TO THE FULL SPEED DATA I SENT.

T

Hi Thane,

Here's an approach to induction motor behaviour
that is graphical and
therefore accessible to you. The attached
torque-speed plot is typical
of commercial single-phase induction motors, in
other words most small
induction motors including the Ryobis you are
using are roughly like this.

The plot shows torque vs speed, and on it I have
superimposed what
happens to efficiency. Torque would go to zero at
zero speed if the
motors didn't have some sort of asymmetry such as
a capacitor starting
coil, but most of them do have that asymmetry. As
it is, there tends to
be a low-speed range around 20% of synchronous
speed in which the motor
is very inefficient, and the operation there is
unstable. I have
labelled this the "starting point?" because I
believe that by reducing
the voltage using the variac, you are initially
putting the motor in
this range of operation. The motor can increase
in speed and torque AND
AT THE SAME TIME decrease the amount of power it
consumes, because the
efficiency increases as you move towards the top
right on the curve.
Once you reach the breakdown rpm at about 80-90 %
of the synchronous
speed, the speed, torque, and efficiency stop
increasing - and
efficiency always stops well short of 100%.

All that is happening in your experiments with
the Perepiteia generator
is that the induction motor is drifting up from
about the 20% of synch
speed to the 80% of synch speed mark, while
improving in efficiency (so
the power consumption drops). That's your
Perepiteia effect. You were
completely unable see to that effect when you
tried a DC motor, because
they have their maximum torque at zero speed, and
their torque declines
nonlinearly but monotonically with increasing
speed. This is the
behaviour you would intuitively expect from
motors.

The reason why none of the wise men like
Professors Zahn and Habash
pointed this out to you earlier is that most
universities stopped doing
any research on induction motors decades ago. As
a result, the details
of induction motor behaviour are not fresh on any
academic's mind, and
when you put a professor on the spot, he will try
to give you the
benefit of the doubt. But in the end, there is
nothing special about the
Perepiteia generator that can't be explained by
the behaviour of the
induction motor attached to it. Sorry.

Therefore, grab investors' money while you can
still find investors who
can't be bothered doing technical due diligence,
and launch your
company. Use the money to do some useful electric
motor related
research. When you do get that far, prof. Zahn
and Habash (or I) would
be able to point you in some productive
directions.

Quote from: CRANKYpants on June 04, 2008, 07:33:08 PM
THIS ONE'S FOR YOU OUman - IT IS FROM A VERY SINCERE ANDF NON-CONDESCENDING PhD FRIEND OF MINE. I HOPE YOU ALL FIND IT ACCESSIBLE TO YOUR TINY INTELLECTS.
T

Hi Thane... Huge brain fart....

See OUman, you can happily leave now knowing everything has been solved and that there is nothing to any of this.

BTW I wasn't aware Thane had tested it with DC motors and failed to get an effect, that could be a verification of extra torque coming from the motor not the generator which all evidence agrees with.

Quote from: aether22 on June 04, 2008, 07:42:42 PM
BTW I wasn't aware Thane had tested it with DC motors and failed to get an effect, that could be a verification of extra torque coming from the motor not the generator which all evidence agrees with.

CALM DOWN A22 - THIS WAS DONE WITH 1 SINGLE SMALL COIL - AND DC MOTORS DON'T HAVE THE SAME FREE WHEELING (NOT FREE WILLY) EFFECT THAT AN INDUCTION MOTOR HAS - ALSO IT IS VERY HARD TO SPIN A DC MOTOR BY HAND - WHAT WAS NOTICABLE IS THE DC MOTOR DREW MORE CURRENT WITH THE HC COIL AND NO ADDITIONAL AMPS WITH BOTH THE HC AND HV.

OUmum IS IT OK TO UNDERLINE - OR IS THAT SO YESTERDAY AS WELL?

T

Quote from: CRANKYpants on June 04, 2008, 07:33:08 PM
THIS ONE'S FOR YOU OUman - IT IS FROM A VERY SINCERE AND NON-CONDESCENDING PhD FRIEND OF MINE.
I HOPE YOU ALL FIND IT ACCESSIBLE TO YOUR TINY INTELLECTS.

THIS IS IN RESPONSE TO THE FULL SPEED DATA I SENT.

...

It is amazing really, those with letters after their names are hacks, and those of us without qualifications are mostly quite sane and logical.

The things engineers have given as reasons for the result have been utterly non-nonsensical.

I didn't expect the academics to really listen but their replies are so poor, so straightforwardly wrong it came as a surprise, I thought they would complicate things to the point that you would need to earn a few doctorates just to understand their objection and a few more to explain where they went wrong but no, it's just very simple and stupid objections, worthy of hacks like PB.

Quote from: aether22 on June 04, 2008, 09:44:23 PM
It is amazing really, those with letters after their names are hacks, and those of us without qualifications are mostly quite sane and logical.

THIS IS ALL PART OF THE JOURNEY - AND THERE ARE RARE JEMS AS WELL LIKE DR. HABASH AND OTHERS - THIS DOC MAY NOT SUPPORT THE WORK BUT HAS BEEN VERY KIND AND SUPPORTIVE IN MANY OTHER WAYS.

BACK AT IT TOMORROW!

Thane