As usual, I delivered an original mechanical setup that can be exploited and improved by those who want to generate electricity in small or large amounts. More power requires more powerful magnets and wider coil diameters. I do not like to handle the big ones and am always trying to combine small magnets to achieve bigger magnets strength. I would like to learn more about existing strategies used to combine magnets for the purpose of increasing strength. As you can see in this video clip, I added one additional magnet to each side of the six magnetic “goalposts.” The two magnets that made up the original magnetic gap are restrained at the lower end by a few turns of copper wire. The added magnets are simply hanging above the copper wire by their own magnetic strengths. This trick can be used to increase the height of the gap. The gap will get taller to accommodate coils with wider diameters. However, the additional increase in height also makes the gap wider on top. Make sure that the plywood clip will not collapse inward by the addition of more magnets. I am sure that some of you will find better ways to built a magnetic “goalpost.”
HAITIAN ALTERNATOR1
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@generatorblue
Hello, the principles are very simple but your construction is far to complicated and also under higher load highly dangerous. With increasing speed and load the magnets will be attracted to the coil and damage your set-up. Use a wind turbine alternator. You have only two disks sitting on top of each other. Much more control and save. No gearing required either.
@generatorblue Hello, the principles are very simple but your construction is far to complicated and also under higher load highly dangerous. With increasing speed and load the magnets will be attracted to the coil and damage your set-up. Use a wind turbine alternator. You have only two disks sitting on top of each other. One with coils and one with the magnets. Much more control and save. No gearing required either and run silent when encased.
@TheOldScientist You are right about the direct relationship between speed and attraction force on the coil. When it happened, I could not explain it to myself. It feels good to get some help from a real scientist.
I found a way to really secure the magnets. In my older “magic rotor” design. I subdivided disks into slices and reduced the danger to people assembling the alternator. I prefer the ceiling fan design. My coils are not well secured. I would like to insert them in a solid metal ring.
Great job! Beautifully built, nice elegant design! Will you be putting blades onto the face of another wheel to drive it?
@CaptBart Aye Aye captain! When I built it, my plan was to build blades attached to a bicycle rim (Rim only without spokes) of the same diameter as the wheel that hold the magnets (the rotor). Maybe when you said “the face of another wheel” you mean another rim. Once your blades are mounted to another rim, you can connect the turbine to the alternator rim-to-rim.
@generatorblue Yes this was one way, i was talking but also, I suppose you could mount them to the rim of the inner or magnetized, wheel you already have?
@CaptBart Yes, you could mount them to the rim at an angle. Then, you will decide to make it an “upwind” or “downwind” machine. My “windmill on wheel” video is depicting a downwind machine that does not require a yaw. The “Hollow tomato cage turbine” has a yaw. If you are building a model, do not hesitate to ask more questions.
@generatorblue Oh, Ok, I get what what you’re doing. Sorry, I misunderstood. Good luck w/ this, looking forward to seeing it working!
I have a question, in a regular car alternator there is an exciter that sends a bit of electricity, to the coil in order to get the alternator up and running. Don’t you also need one? Or how does it work?
@TonyFbaby87 Hi, electricity is generated when coils (loops) of wire travel through magnetic fields.
The magnetic field in this setup is created by the permanent magnets facing each other. The car alternator does not have permanent magnets. Instead it creates a magnetic field with a coil (electromagnet) and an exciter current. In a set of coils create the magnetic field while another set of coils travel through the magnetic field.
The magnetic field varies with the strength of the exciter.
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try the same setup, but put some blade, and let wind turn it..no need to spin it
@CarlosWever I usually post a video of the first prototype and after that I try to improve the design.
Once I establish that the mechanical setup is valid, I make it public in order for other people to improve it. The basic idea is that bicycle wheels are available anywhere on earth. FYI, the wires are covered with black electric tape around the rim. I will be building a stronger model that can handle the elements. I have found “standard parts” to improve this project but not all that I need.
@TonyFbaby87 you can put a magnet in the center of an alternator replacing the magnetic coil . so you do not need the stater . just replace it with somthing that always has a magnetic field . like a magnet . then wire up a 12 volt 12 amp bettery to avariable resister to a 6 volt electtric motor to turn the alternator uses say a power wheels motor . and collect the extra. put some back in the 12 volt battrery with a controler that dont need power to run like a solar controler .
Have you tried to measure the power being generated by a reasonable wind speed?
An AA battery can make an LED blink for weeks, how much voltage and current are you actually generating.
With no iron core on the windings, its probably not very much: milliwatts!
@MrHobiecat You are certainly right about the power. This first prototype was made to demonstrate the mechanical setup. I have not yet built any alternator with iron core coils but I will. Lately, I shifted my attention from original alternator design to transforming ceiling fans to alternators because they deliver a lot more power for less money. Eventually another more efficient version of the Haitian alternator will follow. I appreciate your suggestion. I am struggling with stator building.
@MrHobiecat I forgot to mention that is is not an LED but a 3-volt flashlight bulb with some tape or wire wrapped around it.
@generatorblue IF you are flashing a 3v light bulb with air core windings, that is pretty good. The trick for wind generators is to get them to spin at low wind speeds. With iron core windings, you get much more power output BUT the magnets will be attracted to the iron cores and will tend to stick to them. There will be a minimum wind speed to break the magnets free from the iron core windings.With air core windings this doesnt happen, but the power is much lower…
@generatorblue ..so to get the same power output with air core windings, you need many more windings on the armatures.
I like your approach, I have a 27″ wheel with tape/spoke blades spinning by my watergarden. All it does now is scare away the Blue Herons so they dont eat my Koi, but I do have a small 5W solar panel from Harbor Freight ($35 on sale) that charges a 4Ahr jell cell. On a sunny day it gets enough charge to run a 14W florescent 12V camplight for about 3 hours.,,
@generatorblue … I would like to combine a bike wheel generator to cover the cloudy days. One thought, where I live the wind is out of the W 80% of the time, and out of the east 15% of the time, so I could mount the wheel fixed to catch a W or E wind, and that removes a lot of complexity from the mounting setup.
Keep us posted on the ceiling fan conversions, I have you in my favorites list – nice work, and nicely done.
@generatorblue one last thought, if you measure the power coming off your generators, you will need a scope, or at least a Fluke 97 that measures true RMS power. The reason is the energy is pulsing, and with the large gaps between magnets you have to average in the dead time. The useful number is true RMS power, from which you can calculate how quickly it will charge a battery, or how many amp-hours is being produced for a steady wind speed….
@MrHobiecat Please take a look at my ceiling fan alternators videos on the “generatorblue” channel. Also look at the wire mesh wind turbine videos and the” wind and catamaran on a river turbine” video that gives the construction details of the wire mesh wind turbine. I am trying to improve everything that is original in my videos. It is a slow process because I am trying not to build custom parts. I am trying to build with parts that already exist and that are affordable. Thanks for the comments
you can make it spin by it self for ever and ever if you just add magnets they will go opposite from eachother and capish
damn… you talk too much!
@spectrospirit I do not know why I talk too much. I know why I talk too slow when I record a video. I do not want people to stop and rewind the video because they missed something that were said.
There is another Youtube channel more famous than mine with a gentleman who is famous for ceiling fan alternators. I once sent him a message with the following title: “You talk too much and you work too hard”.
I suggest that you search for “how to ceiling fan wind?” If you like me, you will love MMM