"We should be seeing 200 to 400%."
            Nice wish !
Flynnresearch is today www.qmpower.com
            Please accept their own work,with efficiencies under 100% !

Sincerely
               CdL

Why bother with any motor unless it has the potential for over unity?? I can go buy a motor off the shelf with 90% plus efficiency, so what's the attraction?
If they're used in a motor properly, magnets can provide enormous amounts of extra power. This is no idle wish either. Switched flux works slowly, and has to be used that way. It's just going to take a little more research to figure out an efficient drive configuration.
 

Ted

Furthermore there are things which are not said by the experimentators. For example, my previous model (photos and films here, not yet in youtube: http://servilo.website.pl/laboratorio/esploroj/rownolegle_strumienie/SRSM1/) was really strong. With 10V 0.1A input (=1W) running without any load, I was not able to stop it by holding the shaft with leather gloves. The input current went to max 2.5A (=25W) and the motor slowed down a lot, but no way I couldn't stop it. To compare it with other motors, I could easily stop a 75 W 3 phase motor when holding the shaft with the same hand.

Very interesting setup you made.
The motor being alternator as well, kind of having a compact motor/generator machine.

As you mention, you only get 64% efficiency, very close to the 65% you got from a separate alternator.
Somehow I strongly feel you have maxed out the performance from your design and it is approx 81%.
When two equal or similar units are used in series the efficiency is divided across both units.
New setup: 0.8 x 0.8 = 0.64 = 64%
Old setup: 0.81 x 0.81 = 0.656 = 65.6%

Adding an external alternator to the shaft (besides the internal load) will only slow down the motor even
more and any alternator output will be seen as less output from the internal windings.
The outputs will simply balance each other depending on which load is the greatest.

I have one important question for you, if you don't mind.
If you let your motor Free Run without load at 30V and 1.1 amp No-Load current....
How hot will the motor become after some time has passed, let's say 1-2 hours?

You see, the 30V x 1.1A input at No-Load = 33W lost and this will heat the motor.
The main problem of the losses is the hysteresis and eddy currents of transformers steel.
When the steel passes a magnetic field it tend to brake a bit due to these losses.
This braking is comparable to you braking the shaft by a load and see an increase of input.
Remove the internal dullness of SiFe steel and suddenly you have greatly increased efficiency.

------------------------------------------------------------------------------------
Please read this:
I have tested toroidal powder cores vs toroidal silicon transformer steel inside a circular magnetic field.
The setup was a 30V DC motor with extremely low no-load input, that turned a shaft with the toroid's
inside the alternating magnetic field of sourrounding magnets.
The motor No-Load current at 30V and 3000RPM, without the magnets in place, was approx 7mA.
With the silicon steel toroid placed inside the fields, the No-Load increased to 100mA.
When a powder core was used the No-Load input increased only 1-3mA, depending on the type used.

Conclusion:
SiFe Steel = 100mA increase due to eddy currents and large hystersis.
Any good powder core = maximum 3mA increase. (Good cores are MPP, SMSS, Kool-Mu, Hi-Flux)
The worst powder core was a regular cheap iron powder toroid. It increased input to approx 30mA.

Powder core motors is being in the focus right now by several large manufacturers.
When used together with heavy duty Litz winding the efficiencies can reach 97-98% over a wide RPM range.

I really want to have other cores, the best ones, but where to take them from?

This place.....
http://www.cwsbytemark.com/index.php?main_page=index&cPath=206

The cores lined up, from best to worst. Never use less permeability than 125u. Higher is better.
MPP, Sendust, Hi-Flux, Iron Powder, Mega Flux (the last has to low permeability to fit a motor)
Forget any ferrite core. They can't be machined into desired shape and they don't handle high flux.

Thanks, FatChance!!!.

I have told my friend, who build the motors, about the materials and he is willing to build another motor using much better core, maybe one of these you mentioned. I wonder how they are called in Polish and if they are available here in Poland.

The motor is really amazing. I am reading the translation.

I just uploaded a short video of another tests, in which the parallel path magnet motor SRSM3 is shaft coupled with 1 kW old military soviet DC generator.
http://www.youtube.com/watch?v=IDyPNVHYaJw .

Interesting test, and well done. Thank you for making all the measurements clear and easy to read, (and for the use of subtitles).
You mentioned that the generator had it's highest efficiency at 3k rpm. During the 39 volt test, the system showed a 30% overall efficiency under load. When you dropped the voltage down to 29 volts, the RPMs decreased further and the generator presumably became even less efficient. Yet the overall efficiency went up to 36% into the same load. How would you account for this?

Ted

Another video showing my first prototype running at different speeds, max 10667 rpm, in relation to the supplied voltage.
http://www.youtube.com/watch?v=fPKfoY-D-rw