Magneto PMH Generator

[Boxerlego]

Hi,

This is a Magneto PMH Generator. Here I am making magnetic currents in the U core by using a magnetic structured armature that has North pole magnets on one side and South pole magnets on the other side to focus currents down the PMH generator with a center tapped rectifier and capacitor to store the electricity that is produced. A DC motor and a AA 9 Volt battery box is the main power source to turn the magnet armature around. My last project was going to be a Flux Switching Alternator but here on this machine the magnets on the armature are not switching the domains around in the core but here its rather pulses one streaming direction of magnet current through the U Core. This Generator is able to produce a no-load voltage of 15 volts, please note that the coils do not fit precisely over the U core and that diminish the magnetic effect that is occurring between the coils and the metal core. When I put a load on the capacitor the RPMs on DC motor rises I demonstrate this with my stepper motor as the capacitors load. Now when I power the XL's internal motor, it barley running with any driving force behind it and it is able to turn the planetary gear sets weakly around at 20 rpm.

[Rockbrick]

impressive rpm

[Boxerlego]

Thanks, This is just a start. Another thing here is about using the DC motor as a generator and powering another DC motor, Take for example XL motor used to power another XL motor, I can turn the XL generator by hand and power turn the Xl motor with more force then this machine does spinning at 2500 rpm.

[Boxerlego]

Here is the second part of the generator. This time I use a Full wave bride rectifier along with the Half wave single diode rectifier and capacitor to store the electricity that is produced by the generator. Now I'm measuring the volts on the XL motor while its being power by the generator to serve as a base to compare the two different types of rectification methods. In my the first video I use a center tapped rectifier for the generator, for transformers it is a Full wave rectifier but for the generator it is a Half wave rectifier. The increase in voltage through the Full wave bridge rectifier over the other rectifiers proves that the statement Edward Leedskalnin made about generators in his book Magnetic Current "Now about the generator. In the first place all currents are alternating." Now the question is why does both Full wave and Half wave rectifiers go down to the same voltage when the XL motor is being powered by the generator.

Edited April 11, 2014 by Boxerlego

[Boxerlego]

Here is my latest video of my PMH Magneto Generator. I been steadily working on this and made improvements to the generator and now with the additional PMH coil set the magneto is now able to generate voltages up to 120Vac of the 9V LEGO battery supply. One thing I want to elaborate here is how battery connections behave. For starters connecting batteries together to increase the performance of the DC motors. Now there're two ways to go about to improving performance for the DC motor. First Improvement is by connecting the batteries in parallel and this improves the amount of working time the DC motor is capable of. The second improvement is by connecting the batteries in series and this improve the amount of working power which means more better torque & RPM, this is how the batteries are connected inside the LEGO 9V battery box. Batteries in parallel combines the total amount of current and batteries in series combines together the total amount of voltage. Each of the connections with their own advantages and disadvantages.

Also in this video I showed the hand crank dynamo which is the XL motor is capable of generating a continuous current enough to power the 5 pole DC motor to turn the permanent magnet rotor. What I want to point out what going on there is that the XL DC motor is able to produce a constant considerable amount of current for it given wire size and length as compared to the PMH magneto which use a little bit thicker wire and much more longer length and much more coils then what is inside the XL motor. However the PMH magneto generates way more voltage then the XL motor could at a given RPM.

Now another series of test I did was towards the Transformers being power from 120Vac60Hz mains electric and comparing that with the same Transformer being power from the PMH Magneto which is also around at 120Vac but higher frequency 240Hz - 260HZ. What I wanted to look at here is transformer efficiency. PMH Magneto couldn't even support the 120Vac on the transformer and had a considerable voltage drop when connecting the Transformer alone unlike the 120Vac mains voltage which was able to maintain 120Vac supply. Now during the end of the video I connect two transformers together in parallel and I thought it was interesting to see that I was able to generate voltages up to 140Vac with 120Vac input power on the parallel transformers.