Hi, I want to power Six Hobbywing X8 motors on my DIY Hexacopter. I need recommendations for DIY Hybrid generator to power these Six Hobbywing X8 motors? Any help would be appreciated. Thank you
The circuit diagram is in the video at 1:00 or here at Post #136 fpv-community.de/threads/bridge-projekt.60011/page-7 There is no battery management. In Flight, The battery get charged up to 3,45 V per Cell. The Voltage is controlled via Arduino just per throttleposition. The whole systems has a over voltage protection, active above 26,2 Volt. After 10 running hours the battery get Balanced by a Charger on the workbench
Calculating the voltage an the power at the first step you have to take a look on the torque and power diagram of your desired engine. You choose a rpm Range where you get the highest torque. For example Zenoah engines are best between 9.000 and 11.000 rpm Then you choose the right KV brushlessmotor/generator: Required KV= (rpm : desired voltage) * estimated efficency at full power(mostly between 70% and 80% so 0,7 til 0,8) for Example 48V Generator: (10000rpm : 48V) * 0,75 (75% efficency) = 156, 25 KV Now you got the KV and you looking on Internet for the right Brushlessmotor. The ideal Motor has the Maximum current 1,75 times higher than your operating current in your system (remember: your generator mus run for hours on high current) The Motor wich ist available can have the KV a litle bit higher then your calculated KV For example the 48V Generator: Calculated was 156 KV, available are 149 KV and 168 KV, always choose the higher KV, so i choose the 168 KV. Recalculating the new rpm, : (48V * 168KV) * 0,75 = 10750 rpm then take a look on the powerdiagram of the engine, how much torque are available on 10750 rpm. The G320 deliver 2,1 Newtonmeter Then you cacalculate the maximum available current: Current = Tourque in NM : { (30:π) : KV} for Example: Current = 2,1 Nm : (9,55:168KV) = 37 Amp The difference between Math and Reality: Calculated are 48V @ 10.750 rpm and 37 A maximum current Maesured are 48V@ 10.500 rpm and 38 A maximum current
Can you please specify the power rating for the 1-ohm dummy load resistor? or can you share how you made the dummy load as can be seen at 0:10 it was a coil of wire, was it?
yes, it's just a coil of iron wire. At 1:51 you can see the final version. The 1 ohm resistors i bought burned out very quickly and the selfmade one is durable enough
@@isaacvargasnina yes it is possible, there are hybrid copters with 10kg+ payload available on the Foxtech website. To realize, i have to increase the output power to more than 2.500 Watt. But i have actualy heat issues, so the generator isn't able to deliver full power for long time
From what I see, it an arduino. So you need a voltage sensor and a servo to set/ change throttle position to correct over/ under voltage relative to reference voltage. And a potentiometer to set reference voltage.
hi I have question. Now I'm building of hybrid drone and there is something problem. when drone generate power through generator and then the power move to battery. At the same time battery should send power to servo motors so battery have to do charge and discharge. so what do I equip something between generator and battery and servo motors. thank you
@Sangik Han There is nothing between the rectifier of the generator and the battery. It's the same like in every car, the generator try to keep the Voltage constand to charging level. You only need a high Charging rate Battery. If you want, you can contact me to Iam_Weasel80@hotmail.com for a small summary about my hybrids.
Здраствуйте! Подскажите пожалуйста, у вас мотор электрический TURNIGY 290KV, вы его перекомутировали или вы делали ему перемотку? Что он выдаёт 23 вольт а сколько ватт?
Hello, the turnigy g160 290kv is stock and not re-windet or modyfied. It is fit to a 3 phase rectifier and the operating rpm is 9.500.At this 9.500 rpm, the Turnigy G160 deliver 40A and 24,2 Volt
@@OettersdorfCustoms Спасибо за ответ! Это мне очень помогло . У меня двигатель 12090, 50kv, 15кВт FREERCHOBNY . Я думал его перематовать и получить с него 5000 ватт и примерно 50 вольт! Если дать 9500 оборотов, посмотрим что будит.
@@user-mf2mh9zq7i this 12090 need a gear ratio 3,4:1 to reduce the engine speed from 11.000 to 3.230 rpm to get a voltage 48V-52V and 35A with a torque 2,0Nm*3,4 gear ratio = 6,8 Nm (by using the G320 engine, a bigger engine with more torque wil generate more Amp.
it´s a zenoah G240 RC (Car Engine and the stock clutch ist removed and replaced with the Propnut from a ZG23 Airplane engine) 23 cc displacement and 1.8 kw output power
Hi, to prevent a damage, the battery get's cahrged up to 80%. So LiFePo4 get charged up to 3,45V per cell and LiPo gets charged up to 4,00V per cell. My batterys are still working in my copters. The 1000 W Hybrid in this video can fly 3,5 minutes electrical and my other 1800 W hybrid can fly round about 10 Mimutes electrical.
Question, so there are a lot of companies producing prototype one man drones, the problem seems to be how long they stay aloft, so why has the hybrid concept not been used for this
i don't know. It seems to be a problem with the take off weight/payload ratio. My 1,8 kw Hybrid has a empty payload take off weight of 13 kilogram and a payload capacity of 2 kilogram. So it can carry 2 kilogram for 1 hour with 1,5 liter of fuel. Pure electric is more lightweight, got more payload, a better weight/payload ratio, but less flighttime.
Too loud for urban air mobility, people find drones annoying enough as it is. Batteries are more amenable to the implementation of redundancy for flight safety than a hybrid system. Once that generator goes out for any reason you're stuck on the batteries alone and lost the majority of your range. Some modern multi rotors even use have a small battery for each electric motor to increase flight time (there's one with a whopping 16 of them for 16 rotors) A Hybrid system weights more, takes up more space, and is less efficient than just using batteries, the energy in the fuel isn't all converted into electricity, most of it is lost to noise, inertia, and and heat.
It is a option but i never tryed out, because i need enough energy for emergency landing after a engine stall or a generator malfunction. So i use LiFePo4 battery.
@@OettersdorfCustoms well, if you add a battery i think the supercap is not needed. So when you add more throttle, the motor controller automatically rise up the engine rpm to compensate with load?
@@putraadriansyah8082 yes, the generator controller is verry simple, it tryes to keep the voltage as constand as possible only by measuring the voltage and controlling the Throttle position. The controller is stand alone and have no communication with the flight controller. That work so good, that i'm to lazy, to improve the generator controller (for example with a load based mapping)
In case of an engine fail (one time happend: i had a broken Generator in the air), i have 2,5 Minute electric power from the battery (7S LiFePo4 2,5 Ah) to land it save.
I've been going around this project for a while. But I thought I installed a 4-strokes toyan engine and 24 v dc motor, but I thought I need more Amperes, every ESC dji 420S needs from 20A to 30 A. I was looking to produce 120 A but I've seen that with that 50A generator is enough. ???? I have been very happy to see this project, i see that it is possible. Thanks a lot.
The peak current is carried by the support battery, the generator must deliver a bit more than the hover current to charge the support battery in flight. This system in the Video can deliver 40A continuous until the Fuel is out and 100A Peak for 2 Minutes until the support battery is discharged
@@dronevan Battery and Generator are Parlell switched without any BMS. The generator voltage is set up to charge up the Battery to maximal 80%. A watchdog is programmed to stop the engine in case of overvoltage.
Tow 6,4 Kg (500ml Fuel) = 30 minTow 6,8 Kg (1000ml Fuel) = 50 minHybrid is only worth it for heavy copters. Imagine, you have a spraying drone. You have to Buy 5x 12S 10A Lipo battery, high Power Charger and a generator like a Honda eu22i (because your car battery will surrender while charging 4x 12S 10Ah at the same time) to run your drone continuously.But the hybrid is: fuel up, start and fly, land, refuel and fly again
right now, the stock Zenoah produces nearly 85dB of noise. Its loud and annoying.Just now, the Generator is on the workbench of an custom exhaust engeneer for modelengines.I hope to get 75dB with the new silencer. (that is still not silent but less annoying)
@@OettersdorfCustoms Thanks a lot for helping me. Another question is what model fits the flight control module. Providing the link: pl.aliexpress.com/item/32947890087.html?spm=a2g0o.productlist.0.0.325e3a78JvrybL&algo_pvid=af7740bc-8292-4b6-9a04-ba9bd368b32c&algo_expid=af774-4bb-8 = = 0b0a187b15868065316107071e1a12 & ws_ab_test searchweb0_0, searchweb201602_, searchweb201603_ Or something you have a better flight control module
@@caloninsinyur4055 in this video i use a zenoah g240 23cc Car engine. That engine is good enough for 1000 watt electrical power. For 1800 watt, i use a zenoah g320 32cc car engine
Yes, the voltage Regulator is a Arduino, no other components like active rectifier are used. You can contact me to Iam_Weasel80@web.de for shematic and code
This one deliver 25V, 40A continuos power , (turnigy G160 290kv Brushless) driven by a Zenoah G240RC engine. Check out my other Videos, there is one generator with 48V and 38A continuos power driven by a Zenoah G320RC engine
Hola amigo un abrazo desde Colombia usted seria tan amable de regalar me informacion sobre el tipo de motores Brussles y que tipo de generador usa para entregar le energia a esos mostros de motores
Now we are making a hybrid drone. The engine uses a three-phase motor to generate power, and after that, a three-phase diode is used to change it to two phases, and then the battery is charged. However, if a capacitor is used to charge the power generation energy into the battery, the required wattage of the power generation motor is 2kW, and the capacitor is too large to mount a drone. I want to know how you solved this. And if you don't use a capacitor, I want to know how you handled current and voltage.
I don't use Capacitors. A high charging rate battery is enough to smooth the output ripple of the rectfied 3 Phase AC voltage. The support battery compensate also high current peaks while changing from zero load to full load and back to zero load. My 1KW hybrid use 7S 2,5 Ah LifePo4 and my 1,8KW hybrid use 12S 5,2Ah Lipo for support battery. More importand is a surge protection that prevent the output voltage from the generator goes higher than your battery and esc can handle. Flying without a surge protection will increase the voltage while changing from full load to zeroload for example after landing. That high voltage can kill your ESC and your Flightcontroller
@@OettersdorfCustoms I will try use 1 KW it's 13 kg , with frame total 16 kg. So motor need thrust 3 kg (0,8 W) if i use 6 propeller, but 1 KW engine can't afford 0,8 x 6 KW , how to calculate for total load?
@@harumanw Total power is real hover current on desired payload + 20% to charge the supportbattery and power reserve. Don't thrust too much in Datasheets, built the frame and try out in a electrical flight how much the real hover current is. 13 kg with 1 KW is verry optimistic, buf if real (T motor U8), verry efficient (possible with 28" propeller and more)
Doesn't make sense. You already have a power tran that can spin a single rotor helicopter's rotor. The large diameter of single rotor is better for fuel economy. Converting it to electricity and spin smaller propellers doesn't increase fuel economy. When you get as large as a passenger helicopter, there is no point to make it a multi-rotor, and that is why passenger helicopters are still dominates market in 2024.
Maybe, but it is easier for me, to build an Multirotor than a traditional helicopter (i´m already not skilled enough to build, tune, convert to autopilot, and fly a rc heli, ). Also the remaining flight time on hybrid copter, after stalling combustion engine is higher than autorotation.
They are less complex given there's no need for pitch control - cheap too. They're extremely reactive, where helicopter type drones are a bit more laggy and unstable. So they still dominate film, racing, and test platforms regardless of worse efficiency.
Drones typically don't have a single point of failure as helicopters do. In almost every fatal helicopter crash, auto-rotation failed to save the craft and its passengers; especially when the craft loses a tail rotor and the craft spins out of control as it falls from the sky like a brick. The redundancy of multiple motors and separate electronic speed controllers (ESCs) as well as batteries make drones less likely to crash due to the failure of a single motor, especially with hexacopters and octocopters. For an example checkout the flying sports car I'm in the process of building. @Aero Dynamic Innovation UAM LLC Or @ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-FLOPoD3nBXE.htmlsi=6wtPbkLty6roWqvi
My best flighttime with electric drive and a GoPro and Gimbal as payload was 38 minutes, my verry Best result was only 45 minutes by electric drive without Payload (10 Years ago with one of the first "pan cake" motors, today, it is verry easyer to get more Flight time). My 1800 watt hybrid Copter can fyl 1 Hour with 1,5 Liter of fuel, with 4,5 Liter of fuel it can fly more than 2 Hours
That is great! I am a student and we are making a prototype for farming purposes using hybrid drones. i want to know your email so that i can ask about the program in arduino. thanks a lot!
Hello, useful informations since post #107 fpv-community.de/threads/bridge-projekt.60011/page-6 The Arduino sketch is verry simple. The Regulation is realised just by a voltage measurement controlled PID alogrithm (constant rpm won´t work well in my previous experiments) you Need PIDv1.h ; and the LCD i²C library for Arduino to realise it. Shematic is in the Video and in post #136, sketch to copy is in post #108
All mecanical problems are solved, the flywheel of the zg23 is heavy enough. Only airplane engines have not enough flywheel mass and need extra flywheel.
