Wind power

Hmmmm.

Just a guess, same total power out, but one will be higher frequency, assumong everything else is equal.

The Q doesn't really add up 'cos in reality, the magnets would be passing coils all the time in a real design...therefore the better the magnets the more power. But of course you don't get ow't for now't...presumably if the magnets were sufficiently strong the darned thing wouldn't turn...so we're back to the old chestnut of power matching in a mechanical/electrical/magnetic sense.

Hmmm can I just sit on the fence instead?

Can I (theortically) have the one you don't use please?

Del

Hmmm,

I like your style DEL and more so your question - Can I (theortically) have the one you don't use please?

I think you really should have it. Don't use it though!!! Study it only.

Hi, blob!

Just a guess....but one times "one" = "one"(one), and one times "twenty" = "twenty"(one). Magnets in series (N/S, S/N, etc., end to end) don't multiply any properties, so far as I recall, except to extend the lines of force out the polar ends while elongating the lateral lines of force. Been a long time, though, and there's all kinds of new magnets out there; so I'm willing to be a pushover for correction. Magnets stacked in parallel (N/S, S/N, N/S etc., stacked), however, do extend their lines of force to accommodate at very least their difference in mass to a single magnet of the same size. In a rotor, the magnets are aligned, and retain their original capabilities. 5 twenties, with the same windings of 100 ones will give the twenties the advantage. Obviously, the rotor will be smaller too.

Mark

You have to go to the basics of electromagnetic induction. The generated voltage is directly proportional to: induction (B - measured in Tesla), length of conductor and velocity of the conductor in a perpendicular plane to the magnetic field.

In coreless generators, not all of the inductor coil is generating voltage - usually coils are not round but trapezoidal and only the radial portion of them is participating to induction.

In cored generators, all the length of the conductor in a coil (2XπXRXn) is generating voltage when interacting with a moving magnet.

Preferably, all PM (permanent magnet) generators have magnets on the rotor and coils on the stator. For this reason they are brushless (very popular in wind power).

For short, the higher the grade of magnets, the higher the rpm, the higher the turns number (n) in coils and the lower the gap between rotor and stator - make the higher the voltage. The number of coils and the connection pattern is giving the number of phases.

Your question is not complete. It all depends on how many magnets are "seen" by the coil in a period of time and on the gap and grade of magnets. Don't forget about the perpendicularity of the coil in respect to the magnetic field, otherwise you get zero volts!

I know what you are referring to - Kundel motor - but that's not your invention is it?Besides, the guy has it patented already. So you're a little late with your concept. And he is still working on its feasibilities. Just read all about it! http://www.kundelmagnetics.com/

It is true you can gang as many magnets as you like on the shaft to increase the torque.

Thank you for the info.

I've reviewed Kundel's patent and it seems to me a pretty stupid and inefficient motor. This guy has no idea of magnetic coupling.

Regards

I do not know how much you know about this topic but I can tell you - if he has it patented already (see US 7,151,332) that means it must be a proper working model and not a hokus-pokus.

This was also mentioned on the GlobalSpec website - that is where I picked it up from recently.

Patent applications as such do not get issued for concepts, maybe in the US they do but nothing beats a - working prototype - though.

Even the magnets' poles facing at each other sidewise is quite unusal (it is similar to a disc motor concept) and I assume it supposed to be more efficiect too.

Remember - having a concept is important but turn it into a working model is the ultimate success before your concept/s gonna get the well deserved recognition!

I never said his model is not real or is not working or that USPTO issued that patent wrongly. All I say is: take a look at efficiency and feasibility. If this will ever become a product, will never pass UL certification. One condition is magnetic shielding. Just imagine what will happen if Kundel's motor is put in a ferromagnetic enclosure.

Another thing I would like to clarify, as a general discussion, is: USPTO and any other national patent office - member of WIPO - will always accept inventions, regardless of their efficiency, feasibility, marketability, etc. They don't even ask if you have built a working model! The only condition is to be patentable (meaning new) and not to contradict any law of Physics. A good indication of my assertion is that less than 5% of all patents become sold products or technologies.

Some inventors are looking just for that "well deserved recognition". Having a patent or being featured on the Internet doesn't mean automatically that your concept is worth investing any time or money. The only serious proof is peer review and third party validation of test and measurements.

What you see on Kundel's website is just a proof of concept model - it works, but in my opinion, very inefficiently and any proximity of a magnetic shield or other neighboring ferromagnetic parts, fixtures,etc. will make it even worse.

I think, like everything else, there are specific desings for specific applications. Meaning there are a lot of different motors on the market for different applications.

Even the recently introduced ironless-rotor-motor will only be good upto a certain size, I believe, and the list can go on about other recently introduced types also.

But I do think, as he states it as well, it is a lot more efficient motor than a standard type since it operates on pulses. I know it won't be a very useful type in vertical installation as it could adversely effects its speed.

However, I do think this will be a one big workhorse bound to mainly a one spot, but only time will tell how good a produc it will turn out to be though.

It definately will never make it be a starter type of motor as this one lacks a good start up torque and a lot of other features that many motors can offer in a compact size.

Right, Stephen. Now we came to terms.

Regards,

Michael

I did not try to vehemently protect the Kundel's magnetic motor but the guy who raised this forum said he has a theoritical magnetic motor and the first guy's expression was quite humorous.

Have a G'day to you all!