2244 Wind Turbine Essentials - All About Using Motors As Generators
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I used to hate going to school as a kid and bunked off all the time. If I had this bloke teaching me I think I'd have been outside waiting for it to open.
Yep, there's been something terribly wrong with our schoolsystem for a long, long time.
Agreed! I would have fallen in love with science much earlier and perhaps made some sort of career out of it. If only we can make a duplicating machine and send an army of Roberts to our public schools...
This video is also a useful reminder of how much work goes into the energy we use!
Often we forget what goes behind what we use!
yes we do - especially if we don't really know what is in the little black box
Would be great to see how long that little motor would last before she burnt out.🔥😁. Cool video mate. Love your work ⚡
Thank you Sir Robert!
Grade schools to colleges should be pleased to use your videos for tutoring. 🕊
I thoroughly enjoyed this! Balance, spin, inertia, magnets, electric! This video had it all!
Totally awesome. I completely dig it!
❤ Just love it Rob! Thanks!❤ /Mikael PS. If we take this know in a question like Wind turbin! the resitans and the lose in torque is vital qustions! so joule thiefs and higher diameter for the generator is a way to make samething how might work in light wind! But this is supurb for an extra energysource! I might do one!❤ DS.
WOW! I'm talking about lightbulb here. Here in the US, our lights operate at 110v. Getting 240 from that generator is jaw dropping!
I think if you'd get yourself a mixer like that, it would be made for 110V.
So if you'd build the same setup, it would work as well. Only difference is your voltage will be half of Roberts and the current will be doubled, resulting in the same amount of watts (assuming you put in the same amount of watts by hand).
Wow, that was wild!!! I bet you're sore after that. Great work, very clear and concise. Thanks Rob! ✌️✨
thank you mate - i am glad you found it useful
I love this video! So much knowledge in such a short time. It's amazing how much you can do with some tinkering. And the joy from doing it is SO rewarding. Thank you for the video and please let them coming.
I am always impressed by your depth and breadth of knowledge. Thanks for the video.
cheers mate
And the mad scientist laugh! LOL love it keep em coming Rob. Cheers
BLDC washer motors are great generators after you rewire them for the voltage you want and can be made into vawt or hawt or hydro electric
I think I had almost as much fun watching this as RMS did making it.
Sure hope Mr Steve an ur better half are doin great as u r Mr Robert tytyty well done makin something like useable energy out of nuthin when ur smart enough 👍🏆🔥109%
If you can find one, an AGNI/Lynch high power DC axial flux motor is an excellent generator as it is very efficient and ideally suited due to its high torque, low rpm design. It will generate approximately 1 volt per 50rpm with an incredible amperage output potential.
The Lynch motor is an unconventional design with a disc armature. It marries the advantages of a conventional, wound armature motor with the benefits of a flat (printed circuit) motor. It is similar to a pancake motor, but is more powerful than any of these technologies. The disc armature has magnets on both sides, doubling the available flux density and shortening the magnetic path. It therefore packs more power per pound and per cubic inch than any other motor technology. Of course such a revolutionary motor is not for every application - it is not as cheap as wound field motors, but for many applications it is a far superior motor. It has a previously unheard of power to weight ratio and also power to volume ratio. It is also highly efficient because of the double magnet design and associated short magnetic path. It also includes integral fan cooling.
The Lynch motor is an important development which spurred other motor designers to improve their products to remain competitive, such as synchronus permanent magnet machines. As a result of the competition between manufacturers the cost of high performance motors and controllers has fallen dramatically. We hope the cost of solar cells also reduces to allow renewable transportation to develop as a viable alternative to carbon fuels.
Cedric Lynch built his electric bike around a mid-drive configuration, also building one of the worlds most efficient light weight electric motors to power his rig reliably at 60-MPH for significant distances. He would later set several world records with his axial flux motor and bring it to market as the Lynch / Agni motor. Briggs and Stratton would eventually buy this technology which would lead to the Etek motor, which is now famous for making high speed efficient electric hot rods.
Cedric uses to achieve high speeds is by following the rules of aerodynamics, and building a bike that is as aerodynamic and as efficient as possible. The other builders on this list bypassed this step, and Cedric uses this bicycle as daily transportation on real commutes. Although this high-efficiency motor uses “old school” brushes, this fact allows builders to use very affordable controllers. He has proven his design choices through thousands of miles of commuting, and the Lynch motor is highly respected.
Cedric Lynch is known as the creator of the Agni Motor, a highly efficient electric motor that weighs around 25 pounds and can put out as much as 50hp.
Cedric Lynch is a British 'mad scientist' type mechanical engineer obsessed with the idea of greener transportation. His interest has been in building a super efficient yet powerful vehicle that can serve as a car replacement.
He started thinking of his own design for an electric motor in 1983 when he began entering competitions organized by the Battery Vehicle Society regarding building an efficient electric vehicle. At the time there was no reasonably priced DC motor with descent efficiency so Lynch decided to build his own utilizing modifying existing motors with old tin cans that he would spread out flat to use as cooling fins. Surprisingly using rudimentary materials and a garage work bench, Cedric was making better more efficient electric motors than any of the universities were able to manufacture in state of the art workshops.
Cedric then came up with a motor design that could be cheaply manufactured and began manufacturing his own motor that he could sell to the public in 1988 and the Lynch Electric Motor Company was born, known as LEMCO.
Cedric first used his motor to create a small boat called “The Spark” that would set an electric boat efficiency record. From there Cedric turned his attention to bicycles, an application generally considered too small for a lynch motor at that time. Cedric mounted his motor in recumbent bike, allowing him space to eventually use a set of thundersky lithium batteries.
The resulting aerodynamic recumbent bike had a top speed of 60mph and still managed an incredible range of 150 miles. Cedric rode his recumbent creation everywhere as a daily commuter, putting an amazing 50,000 miles on the machine - technically a motorbike.
Briggs and Stratton, the US firm famous for lawn mower engines, bought the technology and used it in their E-Tech Motor, and Cedric went on to manufacture his latest incarnation of his lynch design into the Agni motor, which is used in go karts, sailboats, motor boats, and even small airplanes.
The Lynch designed motors all have the same traits. Brushed motors, around 25 pounds in weight and they are able to put out enormous power compared to their weight. Sometimes as high as 50 hp (depending on amperage ran through the motor) at an incredible 98% efficiency. Lynch Motors are also the most often used motors in electric motorcycle racing applications.
Cedric's zero-emission motorcycle, which has a top speed of 120mph, was shown in action winning the world’s first zero carbon race - the TTxGP in the Isle of Mann.
The idea for the electric motor has been snapped up by the 56-year-old’’s friend Arvind Rabadia, who together with his brother Hasmuk Rabadia had been thinking of starting a business in India. They have now set up Agni Motors to make further-improved versions of Cedric’s motors
Despite Cedric’s breakthrough invention he has no formal engineering qualifications and taught himself the techniques needed to construct his engine. He first became interested in electrics when his parents bought him a book entitled How to build things from things found at home.
The Etek motor is a brushed 25-pound pancake shaped motor that puts out enormous power for its weight. Depending on amperage and voltage the Etek can easily provide between 15-horsepower and 30-horsepower reliably and consistently (11-kW / 22-kW). A perfect platform for a powerful electric bike if you do not mind the weight. Although brushless motors are considered more modern, a brushed motor like the Etek allows the builder to use very affordable controllers.
Cedric-Lynch invented the motor and sold it to Briggs and Stratton which US company produced the Etek at a lower price (around $600). In the late 90’s early 2000’s it was the way to go for a high-power / light-weight electric vehicle. Many small E-vehicle records were set using the Etek motor. Finally, the market had a relatively lightweight and powerful electric motor available to the masses.
In essence, the Etek allowed hot rodders to build electric bikes. Before the Etek very few people had ever achieved 50mph on an electric bike. Even today, Etek motors (and newer incarnations of the Etek motor) are used to make some super fast electric bikes. In the case of Liveforphysics, the fastest E-bikes ever.
Liveforphysics used a newer version of the Etek (the Agni motor), to achieve speeds of over 70mph, and dominate a recent hill-climb event.
Every Etek I have ever ridden has been characterized by brutal off-the-line acceleration, usually to a point where you have to apply the throttle very carefully or get thrown off. However, it is possible to run an Etek at a lower voltage or lower amperage and have a very manageable, safe, and sane electric bike that will not burn out on you, no matter high steep the incline.
Fortunate that your grandson likes walking 🤣
Thanks for the inspirations
I suppose if the ducting, pipelines and fluid flow i get
Though i could use a good electrical engineer i can trust with some advice with the generation and currency conduction
Can you maybe recommend one i would work well with please?
I would like to run a few ideas Past him and see what he thinks if it is good or not
😊 How about putting some propellers on those motors on the end of a windmill? Let's say a 6 foot windmill with those motors on the tips being driven by wind blowing past the tips. When the wind blows the windmill around, it seems to me. This should be a very efficient way of getting some high R. PM without any kind of gearing, you just run some wires down and put a rotor there and collective power. What do you think? I'm sorry
Eat your heart out Wallace.
Sweet
I wish, we shall see also the wind-to-power formula in practice. i.e. Absolute max = 0,5 x speed x speed x air-mass/second x 0,5 for the blade-sweep-area . Because the air mass cannot be stopped and wind outside the blade-sweep-area in not used .
Always appreciate your videos 👍
prof can skin-effect or the 'field' of flux saturate N/P junction of surface-mounted integrated circuits? SkinEffectFieldEffectTransistor? (likely on a rotor)
Aeromine as support pole for horizontal access wind turbines?
Many thanks from Milner, Georgia, USA.
@ 2 : 45 th Tesla team figured out to fill void between conductors to prevent back emf seems like they used a ceramic material…… worth a try???
wonder how long that motor would kick out 30 watts. its only supposed to work in occasional short bursts as a food liquidiser? i once spent a week mending cars for some squatters in the early 1980s in the middle of winter. there were about ten of them sharing a house with no electricity. their most prized communal possession was one electric torch
The next video will feature a contraption made from a bicycle and a shopping trolley fished out of the canal. 😂
Do we really need to wind copper wire? Wouldn't it be easier to just stamp out a serpentine coil shape on a copper sheet and stack a hundred layers?
Very good vid 💯💥😃
Is there a difference between Speed and RPM ?
Hi robert, i wish you had external microphone, almost every time i had to skip your video in first 2 minutes because of sound quality.
is there a way to power more than 1 generator
1 low torque generator that will spin in low wind speed
AND switches to a higher torque generator that when the wind speed is high enough for it
Hall sensor + micro controller + relay 🤔
I don't like gearing due to losses and higher torque needed
Not every electric engine can be a generator. The most common example is the 3 phase engine with one set of coils on the stator and the second on the rotor.
When current is applied to the stator current is induced in the rotor so coils push themselves apart.
When force is applied to the rotor nothing is induced as there is no magnetic field.
they can be converted too there is usually residual magnetism in the steel core - but even so - if you feed a current down the stator then they will generate - this is how large generators usually work as it is impractical to build permenant magnets that big - indeed that is how a car alternator works - you might need to check your thinking there mate - cheers
We always hear about using a motor as a generator. What about using a generator as a motor. I don't mean a car alternator but a generator from a home gas generator or something similar.
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