Wow I stirred some interest up on the energetic forum.
mbrownn, is this like the workings of the universal motor you have ?
Because it looks like the motor from my old vacuum cleaner. I've got one of those, I
wasn't sure exactly how to use it but. How is it wired up to run from AC wall power ? And from DC ?
Electric motor - Wikipedia, the free encyclopedia
I won't be able to experiment for a couple of weeks but I can plan stuff and research.
I was thinking that if a rotating magnetic field is used for the generator it might be best excited by a sine wave.
Could it be possible a lockridge type device would have the exciter as part of
the generator ? Imagine the Tesla generator with the exciter shaft connected
to the armature shaft, but that won't work because the armature needs to
rotate at a different rate. So maybe a different number of poles in the exciter
than is in the generator or something. So if the armature is spun at say 10
revolutions a second and the exciter was also turned at 10 revolutions a
second but produced 20 cycles of excitation, the rotating magnetic poles in
the field ring would be rotating twice as fast as the armature always. What do
you think ?
http://www.energeticforum.com/renewable-energy/8277-lockridge-triflar-coil-2.html#post190707Thanks, I really appreciate this, I will spend some time digesting it and see what I can make of it.
Yes that motor is similar to what I am working on and has a commutator of twice the number of segments as what the rotor has slots which is what you want. If the number of slots on the rotor is dividable by four then it is perfect.
It is possible that the lockridge had an exciter but I don't think so myself
These are the key points
1 The motor pulses and we get a gain through inductive kickback
2 we have a transformer action in almost equal magnitude to the pulse
3 We have a generator function
4 the generator function is in the same direction as the transformer function
5 three outputs for 1 input
6 only one set of iron and friction losses
It is the geometry that is one of the things I am working on now to try and make this a reality. It may have to be a split field stator but I am not sure yet.
Have you heard of a dynamotor? the ones you can buy are not built correctly and so perform with an overall loss. read the patent US 3913004 it describes the action of the Lockridge device but is built differently Its all in the geometry which is not in the patent.
Yes well that is why I'm building the Tesla generator. With the setup you
describe what would power the rotation of the armature? I think if you allow
the field in the field coils to collapse the armature coils won't generate or the
armature will slow.
Testing it would tell, simulator probably wouldn't deal well with that.
Also if the transformer action is used from a multifilar coil the flux will be less
and the input will increase in line with what is drawn transformer style
because of the drop in flux allowing primary current flow to increase, therefore
when the field collapses there will be less joules to collect as well because of
less flux, that's to my way of thinking anyway. I could well be wrong I'm just
using logic I don't have the figures and formula's to back that up.
Cheers
the trick here is the speed, with a 50% duty cycle on the pulse the second half is the inductive kickback with the voltage returning to zero, the transformer does the same and also the generator. Its a balancing act. Once our load goes too high the motor will stop but our bigger problem is too low a load as the motor may race into self destruct mode.
As the output voltage and current will be higher than the input due to having more turns, the motor would continue to accelerate until it exploded or melted if not controlled.
I suspect the transformer coil is at 90 degrees or so to the field coil but on the same stator section. If the transformer action opposes the generator action we will need the generator on a separate magnetic circuit, hence the split in the case of the lockridge. It may be that this transformer action is then fed to the generator circuit via another coil in the generating half reversing the polarity if required, hence 4 coils and the motor appearing to be a conventional four pole.
The rotor is the old fashioned wave wound with every other segment on the commutator being blank.
The motor is not compensated so inductance will be high at low speed, as speed and as the load goes up the inductance should lower due to the transformer effect just like a compensation coil.
This is all theory too, we will be testing soon on a standard motor/generator and using the results to work out the next step. Once we have the thing how we want we can then rewind the rotor.
I will post results on the lockridge thread when we have them.
Keep asking those questions it helps me work out what I have to do
Yeah that's an exciter/motor/generator all working from a battery. Pretty much
what I want to build. Here's the kicker though. Power is not energy or work.
If we read in the patent you linked, column 5 line 25, quote "thus, the output
voltage potential is kept to a maximum while the current is drawn as required,
within the capacity of the unit design".
If it said method of increasing energy then it would be more interesting.
Cheers
I don't think I answered clearly last night as I was tired.
We have a rotor similar to what peter had us build on the lockridge thread with a blank segment on the commutator between each live one. The power brushes set up so we have a 50% duty cycle pulse. recovery brushes are placed as required. the field and rotor are wired in series but it is not compensated in the normal way with the opposite field coil. As the speed increases we will reach a point where the reactive time is the same as the input time. at this point we have a triangle wave on our generator winding and a triangle wave on our transformer coil. Our output will be continuous but of varying magnitude and possibly polarity. I hope this explains about how the motoring works as it is very simple. It is 50% duty cycle with recovery of the inductive kickback.
The output of the generator is proportional to the power flowing in the armature but the power in the field coil has to be varying so we have a transformer effect.
I understand what you are saying about the flux but by placing the secondary winding of the transformer at 90 degrees we may mitigate some of the flux problems but we need to test this.
As the power coil and transformer coil are separate hopefully any increased draw of current from the transformer will increase or at least maintain the torque.
I hate the legalese of patents, why don't they use plain English. This patent is a different machine to the lockridge and its gains are:-
1) efficiency, ie that there is only one set of iron and friction losses for three functions
2) A transformer action and motoring action at the same time from the same input.
3) and most people miss this, inductive kickback
The principal gain of number three is x2 and the gain of number two is x2 so we have 2x2=4. In the wording he is indicating we have a x3 output or 75% efficiency. I calculated that we would have a x2.7 output which isn't that far out. He is saying increasing energy in lines 20 to 25 on column 4.
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Topic: The Lockridge device (Read 1306 times)
