A friend & I built a wind turbine using a direct drive single hoverboard motor about 7 years ago. I overcame the startup torque problem by connecting an Easy VLC module. This can be programmed to switch the load on when a certain voltage is reached (in my case 14.8 for charging a 12V lead acid battery). It allowed the motor to spin up to charging speed without a load (around 200 rpm) before engaging the load. The second VLC on-board relay also switched on a dummy 3 ohm load when turbine speeds reached uncomfortable levels, to slow it down. I also added a brake by shorting the phase wires together using a push on/off switch activated by a solenoid via a remote control switched circuit. One hall effect sensor in the motor was used to read RPM via Arduino and radio frequency remote transmission.
I made a simple generator out of this motor and a stationary bike. Friction connection to a flywheel of the bike with help od 3D printed bracket. 3 phases connected to a commercial rectifier like the one on the video. Then a boost converter (with potentiometer to set the resistance) and a 7S battery pack. It reaches over 200W but it requires a lot of force on the pedals. Better than wasting that energy to heat when exercising 😅
The standard for continuous human output has been 1/10 HP since the steam engine was invented. 1/10 HP is lifting 55 lbs 12 inches every second. A 40 hr work week would total 3 kW-hrs. 200W is 0.268 HP
@@jeff5101 I actually have no idea as I don't use antiquated units. The OP was about Watts on a bike, so I'll answer in Watts on a bike. My bike has a reasonably accurate (+/-2%) power meter (DuraAce R9200-P) and I consider myself a _very_ average cyclist. When fit, I can maintain 200W for 2 hours and 40 mins. That's not a brag, there are many people that can average much more. For my most recent 24 hour ride (I challenged myself to ride 500km in a single day) I averaged 120Watts.
i bought 4 of them at a thrift store. they can be used as generators, or as a driving motor in a kayak, a wind turbine generator, drive a bike, really big long board , or use it with a weed eater to make up a backup generator for batteries. i like the idea og using them on a tandem bike. its big enough for several batteries and solar panels.
I freaking love how you break things down! I just did it with my son’s broken hoverboard. The only thing, I’m waiting for you to redo this vid so I can connect it to my 3d printed wind/water turbine! Love the vids!🫡
These motors are awesome i made 3 wheeler from these motors with 10" tire and 4x20ah agm batteries top speed is 37km/h and battery lasts around 35km on max power 👍👍 and weight is about 25kg and it can tow about 400kg
I have tried to make a wind turbine out of the hoverboard motor. There is some issue with the magnetic resistance or something. Long story short, it wont spin at lower wind speeds and difficult to start spinning at higher wind speeds. When I compared the spinning resistance with a commercial wind turbine, it was day and night difference because wind turbines start spinning at very low wind speeds and when wind speed rises it is already spinning and wind turbine works at best efficiency. Hoverboard motor wont even start in most cases and when it does it is inefficient. I worked with commercial small (500-1000W) wind turbines and have noticed that those wind turbines have coils without any core, so maybe that is an issue with these motors when used as generators. Since then I abandoned my wind turbine project and the prototype is laying in the storage room.
@@turboimport95I’m assuming it would be like a much larger version of cordless dc motor you would see in something like a drone. They don’t have as much of a “cogging” effect as other types of motors so it would have less resistance to start spinning.
I don't think this video is a failure. Maybe you didn't reach your original goal but I think it was still informative and I am looking for scrap hoverboards and escooters as we speak 😂
Clever project! I know when I go to the electronic recycling center its just an amazing amount of perfectly good parts that are being disposed of for whatever reason. Printers have some really fun bits. Also if you have an autowrecker nearby the sensors off the bumpers are very cheap and really fun. I'm thinking you have a robot ROS project in your future! You might consider a Savonius vertical windmill. You can 3D print the impellers and mount the motors in the vertical plane down at the base where you can also put the battery and BMS. Its omnidirectional and does not need to pivot so much less complicated mechanically. And because all the weight is in the base its somewhat portable.
I can't wait for that driver board analysis and repurposing video. Clamping that chassis with some wood clamps to the table could free you one hand:). I loved the vid anyway. Keep on the good work.
I've got I think 6 of those boards for spares :D. Hi. So, I can try to do some project with them on this TH-cam channel here. As I live in Scotland, the wind is the least of my worries - to have it :D. The bigger problem is not to have it, or have it not too strong ;). If you'd want to test something, I've got all lab basic equipment, including oscilloscope, simple function generator and me and my technician we can microsolder as well. We fix all household electronics.
I would connect the generator output to various values of power resistors, measure the voltage drop across those to calculate the current and also measure the total voltage, then graph out all those values to work out the maximum power point :D Also connect the sense wires to something to record the RPM
Try to reduce the cogging of these motors by removing some metal from the stator laminations only 1mm, max 2mm, it depends on the coils, after decogging the motor shoud rotate more freely, then you can compare one "generator" decogged and one stand. Thanks
Have seen some trials like this and as is (without any transmission in between), most fail due requiring high wind speeds to start spinning to a useful rpm. So consider adding one for your project also maybe, and to do something different, use a vertical axis wind turbine as they are simpler since they dont require to track the wind plus require less "volume per watt". Finally blade design is more forgiving and could be made from PVC to make the prototype faster.
I'm afraid that the start torque on these motors is so high that they wont spin i low wind conditions. Rewinding the connection to Delta from Star might help you get more power from the motors in decent wind conditions. These guys rewired would give way more than 200w, from my skateboard running 4 of these in Delta I peak each motors up to 700w.
You have right, be default, they will don't spin. To work properly in low wind you need rewinding them but not to delta but change the way the wire is joined in the coil. By default, they have 3-5 thin wires per coil connected together parallel, you need to change that to series connection (end of one wire connect to other end) - then in the same wind speed you will have more volts and less amps but it will spin. In full speed, it will reach more than 200V.
For a low speed applications, consider a DIY vertical wind turbine with roller type load bearings at top and bottom coupled to generator at the bottom via a low cost in-line rubber isolated jaw coupling. It will give a long service life. Once the batteries are charged, you'll need a relay to dump excess power to a high power resistor load strong enough to tackle strong wind storms (think about using some Ni-chrome wire).
I built a turbine with one on the top and one on the bottom (phased 'em 6 phases) and used the bearings (top and bottom) and a homemade VAT in between. You can series or parrell connect the output as you please!
I have been trying to do this aswel for a while but don't have much time now. I 3D modeled a type of bracket to hold the blades made from PVC pipe without drilling (because I don't have a drill press and to keep it water tight) into the hub motor but just clamping force. I can upload the STL if you want to use it. I love these type of videos, please keep making them, thanks. Let me know if anyone wants the STL I would be happy to provide them.
7 หลายเดือนก่อน +1
I'm planning to print the shape and make them out of fiber glass and resin
Am from Jamaica, and I would like to learn more about how to make brushless drivers, I managed to make the half bridge, with neutrual point going to + voltage, but i want make a full wave, that's more powerful. Hoping you could taught me how
Disassemble the two halves of the hoverboard. Install motors. Place side by side. Remove Rubber tires. Connet the motors with a belt. Run one motor as a motor, and the other as a generator. Profit! )
Great video, I was thinking of the ac ripple and thinking that you could absorbe the energy at low voltage stages and put them in series, dump them in battery then charge them back in parallel. This will put the generator in a low rpm high torque draw That way it will not waste time generating high voltage to fill battery.
hi there, big thanks for your content! i would like to ask if a bleeder would makes sence for safety and which bleeder would fit? Another question - what about changing the motor windings to /delta connection for having less torque? thanks and regards
You can relatively easily replace 3 of the low side diodes with mosfets and a comparator/IC to reduce the voltage drop of the rectifier in almost half, that would be significant at low rotation speeds where the voltage generated is low.
I really enjoy waching contents like this. I mean recycling sth and make things that either produce electricity or are handy. Please make these kinds of videos more❤
sir please make STM32F103C8T6T based on aircraft for beginners plane in vs code (platformio) please please please 😢😢😢 i request you sir. 31:32 dont worry i know i have seen you with 100% success in many video this is just a step to go to complete success dont step back i will be with u for full support as a subscriber. thank you from india 31:32
I was looking at this hoverboard motor to use as a generator in which I intend to build a DIY battery for my solar energy storage and I was researching for the data that I need and you explained it correctly now I need the actual power ratings.
A cheap, long life weather resistant generator can be found on most cars. Self regulating too. The KV rating of the 3ph motors is crucial to select for generation. IE 770KV needs 770 rpm to achieve 1 volt. Also remember that 1hp equals about 750 watts (1.6hp = 1kw), so consider the torque input as well as rpms. Do the math then design. Good luck!
Just make a metal Y shaped prongs and attach it to the drill on one side and other two should hold the tire firmly so that you can make it rotate using drill.. it seems easier than alternating the alluminium casing
Hello there! I've a question. If you connect one of those motors to a controller, to generate movement you have to convert the DC to a Three phase AC right? So, if you use it as a generator, if you spin the motor, aren't you doing the opposite? Converting the three phase AC to DC? Thanks!
Hmm... If you making a generator with that, you need to rewire it in parallel so you get a lower voltage & secondly you can't depend on it full speed output unless you making a gear system for it.. Maybe if your target voltage was 12 volt, I might decide to make it double that amount. Since at lower speed may range that area of 12 volt or so. You can also use voltage regulator but the current most be rectified first.
I meassured the power of the hoverboard and it draws 8 amps for each motor 16anps × 36v = 575w peak power The maximium motor speed a get is 25km/h no load speed
the higher the power you want to draw the harder it is to turn the motor , i dont think your going to have enough wind to power the huge motor your planning to make by combining the 2 motors , unless your going to make a 1 meter blade or something ridiculously big like that . me personally i would rather have a turbine that turns and generate a small amount of power from the smallest breeze ,then to have a turbine that doesnt turn at all most of the day also maybe use a gear box to have higher rpm ,also dont forget to have breaks on the turbine itself so you wont have a runaway turbine in bad weather your a smart boi !! you will figure it out
Can you make a video of your bldc driver controlling this motor? Or if anyone has tried it? Im having problems during the startup sequence using the arduino ESC tutorial.
use one motor to drive the other motor, sond the second motor you put 10x100w bulbs and a watt meter in parallel to the rectified output. then you can just drive the input motor ... , you have to meassure the temperature on both motors constantly , not to fry them.
hi ! and thanks for that vid ! I have also a hoverboard to dismantle .. and I noticed that my motors have 3 power wires + 5 wires (hall) + one simple WHITE WIRE ... does anybody knows about it ???
You can further increase the generated Voltage at lower RPM if you internally separate the 3 phases, use a Voltage doubled rectifier on each phase (2x diode and 2x capacitor) and put the 3 rectified phases in series!
I would connect those two motors in series then to dc to dc boost converter to get more than 100v and to mppt controller and after all check what real power it outputs 🤔
The one you have is only 250w motor. At the best scenario you'll get close to that not more. Just buy more efficient wind turbines for not so much money. A 500w is much better than the hub motor at converting energy.
the graph nicely shows things... jacobs law. and the plateau or limitation of permanent magnets, fixed flux densities... it shows what is available in the LOAD, and only the load. it doesnt show how much power was applied to SPIN the generator. that requires a pivoting mount, torsion arm, and a load cell calibrated to show torque over time... the winding resistance should be close to 40R as well, the peak point on each curve. the same current in the load is flowing in the generator windings. producing heat. as the load resistance drops below the winding resistance, it is the GENERATOR that heats up. short it out. wheres the heat dissipated? solely in the windings. you will find when the load is that perfect "equal resistance" that half the APPLIED power to spin the generator will be available to the load, the other half? its being lost in the generator! as you get higher and higher resistance in the load, less current, you get proportionally more of the power applied appearing as heat in the load, and far less as heat in the generator. but less power is flowing through the COMPLETE circuit. example. a 10KW generator delivering 10KW, full power, requires 20KW to drive it. half the power is in the load, half in the generator. whereas the 10KW generator driving a 1kw load, only needs 1.1KW to drive it... only 1/10th of the power is lost in the generator winding resistance. there is an ideal value for full power, or maximum efficiency. 50/50. half the power in the load, half the power in the generator. there is a specific resistance for the optimum power transfer to the load. and then you get into batteries, and the fact that they arent resistors, need specific voltages to charge, and the current they draw is based on that voltage... it really does not suit the load requirements of a PM based wind turbine. more things to think about is how your rectifiers are interfering with the currents in each separate coil. that is, the BLDC is generally star wound, with no neutral connection, yet the rectifiers are generally wired delta... meaning that the current is shared between two phases that arent equal. you get conflicting EMFs, and losses... if you wire the rectifier so its connected to that neutral point, the efficiency increases dramatically as now each phase is "isolated" and can push its full power through the circuit connected (load) rather than fight a conflicting phase and only deliver the remainder.
I was curious what kind of motor is inside the wheels. In fact it is an BLDC radial flux outrunner. I have expected to find a BLDC axial flux machine inside because of the shape of the housing. For an axial flux machine in principle no iron is needed, so it has much lesser weight. Normally I use for my motor designs two magnet disks with the stator coil disk inbetween them. At the magnet disk I use a yoke at the PM opposite side to the coil to increase the magnetic flux through the stator disk. But this doesn't significantly contribute much to the total weight. And, more important for me, it doesn't generate rest moment on the rotor, which is important for a high COP. Rest moment generates some kind of friction due to B modulation inside the iron parts, leading to magnetization and eddy current losses.
i thought the British were the champs of droning on and on about the same thing over and over. NOT SO. This guy give a new meaning to the word REDUNDANT. He put me to sleep, I woke up and he was still rambling about something. I pray I do not run across anymore of his vids.
Seperate all batteries and charge them individually , make sure to use a metal tin . And be observant as they charge... if you have them in metal tin ,least you can move them if they caught fire . But then you know for definetly which cells were dead .
Wow you were negative about a home made project (youre self made load device) but i think lots of people are here coz we want to make good hime made stuff. AndIi (still) think you are kind off an expert at that. Maybe your'e just a bad sales person😊
Your video was NOT a fail. You learned things, and informed people. That is a PASS.
A friend & I built a wind turbine using a direct drive single hoverboard motor about 7 years ago. I overcame the startup torque problem by connecting an Easy VLC module. This can be programmed to switch the load on when a certain voltage is reached (in my case 14.8 for charging a 12V lead acid battery). It allowed the motor to spin up to charging speed without a load (around 200 rpm) before engaging the load. The second VLC on-board relay also switched on a dummy 3 ohm load when turbine speeds reached uncomfortable levels, to slow it down. I also added a brake by shorting the phase wires together using a push on/off switch activated by a solenoid via a remote control switched circuit. One hall effect sensor in the motor was used to read RPM via Arduino and radio frequency remote transmission.
I made a simple generator out of this motor and a stationary bike. Friction connection to a flywheel of the bike with help od 3D printed bracket. 3 phases connected to a commercial rectifier like the one on the video. Then a boost converter (with potentiometer to set the resistance) and a 7S battery pack. It reaches over 200W but it requires a lot of force on the pedals. Better than wasting that energy to heat when exercising 😅
The standard for continuous human output has been 1/10 HP since the steam engine was invented. 1/10 HP is lifting 55 lbs 12 inches every second. A 40 hr work week would total 3 kW-hrs. 200W is 0.268 HP
Just because a 'Standard' states a human can produce 75W (1/10hp) continuously, doesn't mean the OP is not capable of producing 200W short term.
@@SimoWill75 how many times can you lift 147 pounds 12 inches per second?
@@jeff5101 I actually have no idea as I don't use antiquated units. The OP was about Watts on a bike, so I'll answer in Watts on a bike. My bike has a reasonably accurate (+/-2%) power meter (DuraAce R9200-P) and I consider myself a _very_ average cyclist. When fit, I can maintain 200W for 2 hours and 40 mins. That's not a brag, there are many people that can average much more. For my most recent 24 hour ride (I challenged myself to ride 500km in a single day) I averaged 120Watts.
@@SimoWill75 It has nothing to do with the equipment you use. It's the physical exertion. 1 HP. 3/4 kW is lifting 550 lbs 12 inches every second.
i bought 4 of them at a thrift store. they can be used as generators, or as a driving motor in a kayak, a wind turbine generator, drive a bike, really big long board , or use it with a weed eater to make up a backup generator for batteries. i like the idea og using them on a tandem bike. its big enough for several batteries and solar panels.
I'm printing a lathe chuck. Going to attach it to one of hover board motors. I'm betting it make a great lathe.
I freaking love how you break things down! I just did it with my son’s broken hoverboard. The only thing, I’m waiting for you to redo this vid so I can connect it to my 3d printed wind/water turbine!
Love the vids!🫡
Failure videos are sometimes the best to watch. And also - kudos for the time disclaimer for those who are after the information.
These motors are awesome i made 3 wheeler from these motors with 10" tire and 4x20ah agm batteries top speed is 37km/h and battery lasts around 35km on max power 👍👍 and weight is about 25kg and it can tow about 400kg
I have tried to make a wind turbine out of the hoverboard motor. There is some issue with the magnetic resistance or something. Long story short, it wont spin at lower wind speeds and difficult to start spinning at higher wind speeds. When I compared the spinning resistance with a commercial wind turbine, it was day and night difference because wind turbines start spinning at very low wind speeds and when wind speed rises it is already spinning and wind turbine works at best efficiency. Hoverboard motor wont even start in most cases and when it does it is inefficient. I worked with commercial small (500-1000W) wind turbines and have noticed that those wind turbines have coils without any core, so maybe that is an issue with these motors when used as generators. Since then I abandoned my wind turbine project and the prototype is laying in the storage room.
Could it be solved by a simple gear ratio to increase torque from the propeller to the motor?
what do you mean without a core? is the wires wrapped around plastic instead? It has to have poles, and be 3 phase right? this is interesting.
@@turboimport95I’m assuming it would be like a much larger version of cordless dc motor you would see in something like a drone. They don’t have as much of a “cogging” effect as other types of motors so it would have less resistance to start spinning.
@@randominternetviewer166 It could but it will lower the maximum power output even lower.
@@turboimport95 There were just wires wrapped in a loop and yes as you said 3 phase. I just googled that.. it is called axial flux winding.
I don't think this video is a failure. Maybe you didn't reach your original goal but I think it was still informative and I am looking for scrap hoverboards and escooters as we speak 😂
Using those motors for a wind turbine is certainly a very interesting idea. Good video! ☺
Clever project! I know when I go to the electronic recycling center its just an amazing amount of perfectly good parts that are being disposed of for whatever reason. Printers have some really fun bits. Also if you have an autowrecker nearby the sensors off the bumpers are very cheap and really fun. I'm thinking you have a robot ROS project in your future!
You might consider a Savonius vertical windmill. You can 3D print the impellers and mount the motors in the vertical plane down at the base where you can also put the battery and BMS. Its omnidirectional and does not need to pivot so much less complicated mechanically. And because all the weight is in the base its somewhat portable.
Great project. Success or failure, I learn a lot from your videos.
I can't wait for that driver board analysis and repurposing video. Clamping that chassis with some wood clamps to the table could free you one hand:). I loved the vid anyway. Keep on the good work.
Thank you for the time spent, for your efforts and for the knowledge! Always a great time for me, watching your videos.
i paid $10 usd for a Hover 1 HoverBoard at a thrift store and it works
Nice generator
I've got I think 6 of those boards for spares :D. Hi. So, I can try to do some project with them on this TH-cam channel here. As I live in Scotland, the wind is the least of my worries - to have it :D. The bigger problem is not to have it, or have it not too strong ;).
If you'd want to test something, I've got all lab basic equipment, including oscilloscope, simple function generator and me and my technician we can microsolder as well. We fix all household electronics.
I would connect the generator output to various values of power resistors, measure the voltage drop across those to calculate the current and also measure the total voltage, then graph out all those values to work out the maximum power point :D
Also connect the sense wires to something to record the RPM
Try to reduce the cogging of these motors by removing some metal from the stator laminations only 1mm, max 2mm, it depends on the coils, after decogging the motor shoud rotate more freely, then you can compare one "generator" decogged and one stand. Thanks
Have seen some trials like this and as is (without any transmission in between), most fail due requiring high wind speeds to start spinning to a useful rpm. So consider adding one for your project also maybe, and to do something different, use a vertical axis wind turbine as they are simpler since they dont require to track the wind plus require less "volume per watt". Finally blade design is more forgiving and could be made from PVC to make the prototype faster.
I'm afraid that the start torque on these motors is so high that they wont spin i low wind conditions. Rewinding the connection to Delta from Star might help you get more power from the motors in decent wind conditions. These guys rewired would give way more than 200w, from my skateboard running 4 of these in Delta I peak each motors up to 700w.
Oh yes they will spin, if your turbine rotor is "beefy" enough!!!
You have right, be default, they will don't spin. To work properly in low wind you need rewinding them but not to delta but change the way the wire is joined in the coil. By default, they have 3-5 thin wires per coil connected together parallel, you need to change that to series connection (end of one wire connect to other end) - then in the same wind speed you will have more volts and less amps but it will spin. In full speed, it will reach more than 200V.
For a low speed applications, consider a DIY vertical wind turbine with roller type load bearings at top and bottom coupled to generator at the bottom via a low cost in-line rubber isolated jaw coupling. It will give a long service life. Once the batteries are charged, you'll need a relay to dump excess power to a high power resistor load strong enough to tackle strong wind storms (think about using some Ni-chrome wire).
I built a turbine with one on the top and one on the bottom (phased 'em 6 phases) and used the bearings (top and bottom) and a homemade VAT in between. You can series or parrell connect the output as you please!
If you would like more info about how I did it I'm glad to share more.
I have been trying to do this aswel for a while but don't have much time now. I 3D modeled a type of bracket to hold the blades made from PVC pipe without drilling (because I don't have a drill press and to keep it water tight) into the hub motor but just clamping force. I can upload the STL if you want to use it. I love these type of videos, please keep making them, thanks. Let me know if anyone wants the STL I would be happy to provide them.
I'm planning to print the shape and make them out of fiber glass and resin
Good sharing of disassembly work. Thank you.
Am from Jamaica, and I would like to learn more about how to make brushless drivers, I managed to make the half bridge, with neutrual point going to + voltage, but i want make a full wave, that's more powerful. Hoping you could taught me how
Disassemble the two halves of the hoverboard. Install motors. Place side by side. Remove Rubber tires. Connet the motors with a belt. Run one motor as a motor, and the other as a generator. Profit! )
I really like this new format! Keep it rolling 🎉
Nice, hope you will continue to work on wind generator, good luck!
Great video, I was thinking of the ac ripple and thinking that you could absorbe the energy at low voltage stages and put them in series, dump them in battery then charge them back in parallel. This will put the generator in a low rpm high torque draw
That way it will not waste time generating high voltage to fill battery.
Make 3d printer using Arduino uno make it cheaper to cheaper and using scrape
Great Scott did a great video about these Hoverboard motors. I think he can help:)
hi there, big thanks for your content! i would like to ask if a bleeder would makes sence for safety and which bleeder would fit? Another question - what about changing the motor windings to /delta connection for having less torque? thanks and regards
You can relatively easily replace 3 of the low side diodes with mosfets and a comparator/IC to reduce the voltage drop of the rectifier in almost half, that would be significant at low rotation speeds where the voltage generated is low.
I really enjoy waching contents like this. I mean recycling sth and make things that either produce electricity or are handy. Please make these kinds of videos more❤
Stick to your channel 😅 still watching ❤👍
i love it, someone's garbage is gold for others
sir please make STM32F103C8T6T based on aircraft for beginners plane in vs code (platformio) please please please 😢😢😢 i request you sir.
31:32 dont worry i know i have seen you with 100% success in many video this is just a step to go to complete success dont step back i will be with u for full support as a subscriber. thank you from india 31:32
I was looking at this hoverboard motor to use as a generator in which I intend to build a DIY battery for my solar energy storage and I was researching for the data that I need and you explained it correctly now I need the actual power ratings.
You could try gearing and chain , to overcome torque needed to rotate hoverboard wheel. As a wind turbine .
Very cool project. i hope that works fine
Thanks!
You have 2 motrs.... power one with the other. there are controllers online very cheap (7€) and full of features... very nice.
A cheap, long life weather resistant generator can be found on most cars. Self regulating too.
The KV rating of the 3ph motors is crucial to select for generation. IE 770KV needs 770 rpm to achieve 1 volt. Also remember that 1hp equals about 750 watts (1.6hp = 1kw), so consider the torque input as well as rpms. Do the math then design. Good luck!
a cool project. i hope you dont give up!
Just make a metal Y shaped prongs and attach it to the drill on one side and other two should hold the tire firmly so that you can make it rotate using drill.. it seems easier than alternating the alluminium casing
Love from Bangladesh ❤❤🇧🇩🇧🇩🇧🇩
Awesome project bro👍. I think you should collaborate with great Scott or electroboom.
I'm going to attach a 3d printed lathe chuck to the overboard motor. The lathe chuck is printing right now
Hello there! I've a question. If you connect one of those motors to a controller, to generate movement you have to convert the DC to a Three phase AC right? So, if you use it as a generator, if you spin the motor, aren't you doing the opposite? Converting the three phase AC to DC? Thanks!
U are just like me.... just jump in to a project and see if it is a GO. ❤
you'll need big blades and a tall post to use one motor directly, gearing will be necessary. test it with a hand crank.
Lubię graty ze śmietnika. Czasem coś się trafi ciekawego 🙂👍
Hmm... If you making a generator with that, you need to rewire it in parallel so you get a lower voltage & secondly you can't depend on it full speed output unless you making a gear system for it.. Maybe if your target voltage was 12 volt, I might decide to make it double that amount. Since at lower speed may range that area of 12 volt or so. You can also use voltage regulator but the current most be rectified first.
Can you please share from where you bought it?? Thks.
Commenting for better reach and better recommendation.
I meassured the power of the hoverboard and it draws 8 amps for each motor
16anps × 36v = 575w peak power
The maximium motor speed a get is 25km/h no load speed
quizás con una mesa de arranque para coches RC podrías probarlo aunque quizás tendrías el mismo problema con la goma de la rueda
the higher the power you want to draw the harder it is to turn the motor , i dont think your going to have enough wind to power the huge motor your planning to make by combining the 2 motors , unless your going to make a 1 meter blade or something ridiculously big like that .
me personally i would rather have a turbine that turns and generate a small amount of power from the smallest breeze ,then to have a turbine that doesnt turn at all most of the day
also maybe use a gear box to have higher rpm ,also dont forget to have breaks on the turbine itself so you wont have a runaway turbine in bad weather
your a smart boi !! you will figure it out
You can use the motors to make a motorised sofa for example...
Can you make a video of your bldc driver controlling this motor? Or if anyone has tried it? Im having problems during the startup sequence using the arduino ESC tutorial.
This is a very nice idea.
use one motor to drive the other motor, sond the second motor you put 10x100w bulbs and a watt meter in parallel to the rectified output. then you can just drive the input motor ... , you have to meassure the temperature on both motors constantly , not to fry them.
Just noticed that you have uploaded 4 new videos, these aren't getting recommended to me☹
Outstanding look forward to you stacking.
hi ! and thanks for that vid ! I have also a hoverboard to dismantle .. and I noticed that my motors have 3 power wires + 5 wires (hall) + one simple WHITE WIRE ... does anybody knows about it ???
Can you combine solar panels and wind turbines? Fins of wind turbine will be made of solar
You can further increase the generated Voltage at lower RPM if you internally separate the 3 phases, use a Voltage doubled rectifier on each phase (2x diode and 2x capacitor) and put the 3 rectified phases in series!
Hmmm interesting
Wouldn't it increase a chance of breaking the insulation of the coil wires and make a short? Just wondering.
@@andrejhanus36 of course there are such limits!
@@ELECTRONOOBS this is specifically interesting because at the length of the wire between the generator and the consumer copper costs can be reduced!
Maybe you can just 3D print an adapter for your drill that engages with the spokes on the hoverboard wheel.
I would connect those two motors in series then to dc to dc boost converter to get more than 100v and to mppt controller and after all check what real power it outputs 🤔
this type of generator requires (Maximum Power Point Tracking) mppt tracking
Bigger wheel on the drill will driver the smaller, faster
Do you think Axial Flux motors would work better?
I know that thing is heavy, but you lift it with one hand like nothing inside it
After I read something in your t-shirt 😅
Al may scoate 3 kw. Respect.
What is the resistance measured between two phases, what is the inductance of the same?
The one you have is only 250w motor. At the best scenario you'll get close to that not more. Just buy more efficient wind turbines for not so much money. A 500w is much better than the hub motor at converting energy.
Good job bro where are you from?
Excellent video and great idea!
Bom dia,
motores gimbal podem ser usados como gerador para turbina eólica?
E motores de drone, poderiam servir sem re-enrolar?
Obrigado.
Oh you said that nice but can you use a 1 kilowatt bldc of motor instead of using a this smaller ones😊
Thank you for a good video.
Change the wiring from star to delta and use a wind charge controller or soda charge controller of mppt
A clothes washing machine with direct drive is typically free and over 3x the size of those motors
the graph nicely shows things... jacobs law. and the plateau or limitation of permanent magnets, fixed flux densities...
it shows what is available in the LOAD, and only the load. it doesnt show how much power was applied to SPIN the generator. that requires a pivoting mount, torsion arm, and a load cell calibrated to show torque over time...
the winding resistance should be close to 40R as well, the peak point on each curve.
the same current in the load is flowing in the generator windings. producing heat.
as the load resistance drops below the winding resistance, it is the GENERATOR that heats up. short it out. wheres the heat dissipated? solely in the windings.
you will find when the load is that perfect "equal resistance" that half the APPLIED power to spin the generator will be available to the load, the other half? its being lost in the generator! as you get higher and higher resistance in the load, less current, you get proportionally more of the power applied appearing as heat in the load, and far less as heat in the generator. but less power is flowing through the COMPLETE circuit.
example.
a 10KW generator delivering 10KW, full power, requires 20KW to drive it. half the power is in the load, half in the generator.
whereas the 10KW generator driving a 1kw load, only needs 1.1KW to drive it... only 1/10th of the power is lost in the generator winding resistance.
there is an ideal value for full power, or maximum efficiency. 50/50. half the power in the load, half the power in the generator.
there is a specific resistance for the optimum power transfer to the load.
and then you get into batteries, and the fact that they arent resistors, need specific voltages to charge, and the current they draw is based on that voltage... it really does not suit the load requirements of a PM based wind turbine.
more things to think about is how your rectifiers are interfering with the currents in each separate coil.
that is, the BLDC is generally star wound, with no neutral connection, yet the rectifiers are generally wired delta... meaning that the current is shared between two phases that arent equal. you get conflicting EMFs, and losses... if you wire the rectifier so its connected to that neutral point, the efficiency increases dramatically as now each phase is "isolated" and can push its full power through the circuit connected (load) rather than fight a conflicting phase and only deliver the remainder.
Those motors looks like ceiling fan motors, u can get those for free
If I had 3 hoverboards, I would wire them to a esp and have it collect rock samples from the desert or bring me food from the kitchen...
I was curious what kind of motor is inside the wheels. In fact it is an BLDC radial flux outrunner. I have expected to find a BLDC axial flux machine inside because of the shape of the housing. For an axial flux machine in principle no iron is needed, so it has much lesser weight.
Normally I use for my motor designs two magnet disks with the stator coil disk inbetween them. At the magnet disk I use a yoke at the PM opposite side to the coil to increase the magnetic flux through the stator disk. But this doesn't significantly contribute much to the total weight.
And, more important for me, it doesn't generate rest moment on the rotor, which is important for a high COP. Rest moment generates some kind of friction due to B modulation inside the iron parts, leading to magnetization and eddy current losses.
i thought the British were the champs of droning on and on about the same thing over and over. NOT SO. This guy give a new meaning to the word REDUNDANT.
He put me to sleep, I woke up and he was still rambling about something. I pray I do not run across anymore of his vids.
3000 watts pure sine wave inverter circuit diagram using pic IC
No es mejor poner cada motor en un molino separado?
Check EFeru's hoverboard firmware
very interesting !!!
Hey i'm still waiting for your update sine wave inverter video.
Experimente /teste home made pentru tineri entuziaști
Se podría hacer un proyecto con estos motores, pero no sabemos como contactar contigo desde Madrid. Un saludo
,☕¡Gracias!
Gracias a ti!
nice one!
Seperate all batteries and charge them individually , make sure to use a metal tin .
And be observant as they charge... if you have them in metal tin ,least you can move them if they caught fire .
But then you know for definetly which cells were dead .
Wow you were negative about a home made project (youre self made load device) but i think lots of people are here coz we want to make good hime made stuff. AndIi (still) think you are kind off an expert at that. Maybe your'e just a bad sales person😊