F.B.D.I.S.S.M - Flux.Boosted.Dual.Induction.Split.Spiral.Motor.

[sterlinga]

I've posted a feature page about Honk's work at http://peswiki.com/index.php/Directory:_Flux_Boosted_Dual_Induction_Split_Spiral_Motor_%28F.B.D.I.S.S.M.%29

Amazing workmanship.

[Honk]

Thank you for all your positive feedback and the Peswiki page. 

I'd like to clarify some issues regarding the functionality of the motor.
1) Yes I used rather thick lamination's for the electromagnet but it
    didn't really matter in this case. Using thinner lamination's with somewhat
    less eddy currents would only have made a minor difference, not huge at all.
    It wouldn't have given stronger flux fields as the fields are limited by the large airgap
    (distance between Em poles) of the solenoid style electromagnet. This applies to all
    other core alloys as well, high permeability won't increase the flux due to the airgap.
    The really big problem was the induced voltage from the passing by rotor magnets.
    This caused the Em's to consume many times more compare to static mode.
    If it had only been up to thinner lamination's or other alloys then it would be a piece of cake.

2) There was really no saturation to speak of. If so, then the motor would heat up quickly.
    The only things getting heated was the electromagnets on prolonged run times.
    The stator was cool, the rotor was cool and all iron and aluminum parts was cool.
    I agree it could have been an open frame motor with minimal losses but it still wouldn't have
    made any huge difference as long as the input energy is determined by the induced EM voltage.
    If static mode takes 10 amps at 30V (300W) to push the rotor into next loop then dynamic mode
    requires a lot more. E'g if there is 300V induced then it comes to 330V x 10A = 3300W pulse just
    to escape the sticky spot. It might need a lot more than this, as the induced voltage increases
    with speed and I never measured the EM voltage on each test run.

The thing is, no small optimisations would make a difference in overunity performance.
Yes, it would run a bit faster at the expense of higher induced electromagnet voltage and
this determines how much input power is consumed. The faster the RPM, the higher the input.
Swapping the EM core will not have any dramatic effect, it's still affected by the rotor magnet.
As long as there is no magnetic pulse device that can match the fields of the stator magnets while
not being affected by the rotor magnets.....then I fear the Magnetic Wankel will stay a dream. 

[gyulasun]

Hi Honk,

I have seen an interesting setup shown by allcanadian at energeticforum.com. He used a H shaped core for his stator cores and oriented one of the sides of the H to face the rotor magnets when it passed by.
See this link for the text and I uploaded the drawing here because it can only be seen over that forum if you log in:
http://www.energeticforum.com/renewable-energy/2790-no-bemf-motor.html

This way the induced voltage by the passing rotor magnets could significantly be reduced in the electromagnets because most of the flux would go through the side part of the stator core where there is no coil winding. Maybe you could build such H core for the two electromagnets? Even a T shape would work I think if you position the head part of the T to face the rotor magnets.

rgds,  Gyula

[Honk]

Sorry to say this but a Magnetic Wankel with tilted rotor magnets as shown in the picture
will not make use and develop torque from the attraction between stator and rotormagnets.
There will still be quite a lot of induced voltage, yet it will have another shape and level, but the
absence of heavy duty torque (for shaft connected energy production) will deteriorate any gain.
I've seen this configuration of core attraction in other attempts but induced voltage always wins....

You see, a tilted magnet facing an Electromagnet core is actually having a serious problem.
It will be brake in very hard due to both poles of the rotor magnet being attracted to the EM core with minimal airgap.
There is yet another problem, how will you pulse it....a negative pulse will both attract and repel the rotor magnet,
and the same goes for a positive pulse, both attraction and repulsion will occur. Gain zero.
If you delay the pulse until the rotor magnet has bounced a bit past the EM core, then all gain is lost due to the
heavy braking effect, all torque & power seen is being developed from the pulsed EM spot minus the losses. Gain zero.

[Liberty]

Sorry to say this but a Magnetic Wankel with tilted rotor magnets as shown in the picture
will not make use and develop torque from the attraction between stator and rotormagnets.
There will still be quite a lot of induced voltage, yet it will have another shape and level, but the
absence of heavy duty torque (for shaft connected energy production) will deteriorate any gain.
I've seen this configuration of core attraction in other attempts but induced voltage always wins....

You see, a tilted magnet facing an Electromagnet core is actually having a serious problem.
It will be brake in very hard due to both poles of the rotor magnet being attracted to the EM core with minimal airgap.
There is yet another problem, how will you pulse it....a negative pulse will both attract and repel the rotor magnet,
and the same goes for a positive pulse, both attraction and repulsion will occur. Gain zero.
If you delay the pulse until the rotor magnet has bounced a bit past the EM core, then all gain is lost due to the
heavy braking effect, all torque & power seen is being developed from the pulsed EM spot minus the losses. Gain zero.

Honk,

In my experience, I have found that as long as you use a coil directly in a motor (with magnets swinging by), the coil will act as a decent power generator and fight the power that you are trying to feed into the motor to drive it, just as you have well said in your post. 

If you can use a coil indirectly in the motor, (such as an actuator moving a magnet) I think you will overcome your electrical efficiency issue. 

A working example of this can be found at http://www.dynamaticmotors.com in the motor movie section.  It uses a speaker coil for an actuator, but is capable of well over 1500 rpm using a couple of 12" speakers.  The dual rotor version utilizes an actuator circuit that is powering the 12 " speakers continuously, and still achieves about 70% efficiency.  (But could run in pulse mode with a different actuator [pulse with magnet hold] and would most likely exceed 100% electrical efficiency, using an estimated 25% of the amount of input power as before) .  Neo Magnets are in the rotor and stator on this style motor and provide most of the rotary force.

I have really enjoyed reading your posts and progress on your motor.
Wishing you all the best,

Liberty