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Overunity Machines Forum



Parallel Path Magnet Motor

Started by scianto, September 08, 2010, 02:50:32 AM

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0 Members and 12 Guests are viewing this topic.

FatChance!!!

Quote from: scianto on September 08, 2010, 03:00:13 PM
I will be publishing more videos if anything interesting in my tests appears.
Yes, please do!

Quote from: scianto on September 08, 2010, 03:00:13 PM
I am going to use other alternators and 3 phase motors with capacitors and even DC motors, whatever I can get my hands on.
It seems your motor is 81% efficient. You are using two equivalent PPMT motors in your setup and the test shows 65% peak efficiency.
But this is using dual similar motors and according to physics the efficiency is divided across both units.
So, one motor is 81% efficient => 0.81 x 0.81 = 0,65 (65%) as shown by your setup.

Quote from: scianto on September 08, 2010, 03:00:13 PM
That strictly depends on the position of the sensor, that is the switching time related to the rotor position. The motors you see on the videos I made run at 30 V drawing anything from 0,4 A to over 10 A, just by moving the sensor (changing the pulses timing ). Very flexible. The higher amp draw, the higher rotation from a few hundred to several thousands.
The No-Load current is mostly caused by drag losses from eddy currents and hysteresis in the steel.
Some losses is I2R in the wiring and some else is simply wind drag and ball bearing losses.
Anything that contributes to free running losses is shown as the No-Load current.
Eddy currents and hysteresis can almost be 100% eliminated by using a powder core stator and rotor.
Winding losses can by minimised by using heavy duty Liz wiring at low resistance.
Wind drag is minimised by a smooth stator and rotor design that doesn't "grab hold" to the air.
Bearing losses is improved by good ceramic ball bearings.

Quote from: scianto on September 08, 2010, 03:00:13 PM
I didn't try it. I would need to dismount the motor to take the magnets out.
Please do, if you find some spare time for this test. It's would be very interesting to see.

Airstriker

Has nobody already tried this ? How about Flynn? I don't believe he hasn't. Could be just a loss of time. But nice setup anyway. I fajnie, że wreszcie jakaÅ› porzÄ...dna polska robota ;)

Ted Ewert

Nice motor generator set-up! They look very well built.
As you have found out, duty cycle and timing will have the greatest effect on your efficiency. You will also find that loading your motor should increase your efficiency. This is because of the increase in "on time" which allows the magnets to do their work.
You may also want to put a prony brake on the output shaft of your motor instead of the generator. That will give you an absolute measurement of your torque, which you can then easily translate into power.
Once you have that, then you can graph your power curve related to RPM. This will tell you more about the performance characteristics of your motor than anything else. It also gives you a reference to compare with the power in.
Great work.

Ted

wings


scianto

Quote from: tbird on September 08, 2010, 10:01:49 AMwhich patent is that?
I am aware of three patents where this technology is described:
2446446 E. F. Wargin "Breakerless Magneto" year 1948
2456475 E. F. Wargin "Ignition System" year 1948
and
6246561 Flynn "Methods for controlling the path of magnetic flux from a permanent magnet and devices incorporating the same." year 2001

I guess, there are more patents about this.