Going forward, Hybrid System drone (Sandwich Drone Project)

In this month I've worked on my generator, it is composed of a brushless motor, a glow one and a diode bridge rectifier, as you can see in picture

It was able to generate at max throttle about 1.2 kW , starting the motor is difficult, I don't love glow engines (I only figured it now ahah) but the point is that my generator works and with some modifications to reduces vibrations can be mounted on a drone.

What I want to do now is to use a gas motor to generate the energy because glow engines consume a lot more fuel (I will be able to generate 1 kW/h with 0.30 L ). 

I have also made a new frame to sustain a bigger cargo system (and the generator) 

I don't have enough money to buy the gas engine and also upgrade my old APM system to a new pixhawk one so I'm selling my laptop (I'm a student, and have also to pay the flight school) 

But I'm trying, the numbers are good 1kW is enough to sustain my configuration with 2KG  of cargo weight.

If you want to stay in contact please subscribe to newsletter http://eepurl.com/cUJnJr ; and take a look at the site https://www.sandwichdrones.it/

Thank you for attention

Views: 2269

Comment by iSkyMaster on October 1, 2017 at 1:43pm

What diode are you using with the brushless motor?

Comment by iw28 on October 1, 2017 at 2:04pm

use active rectifier (synchronous rectification), as they are used in high effective converters. If interested mail me and I can help you with documentations.

Comment by Rana on October 1, 2017 at 9:51pm

That's nice findings, would you share your voltage and current measurements. Have you used rectifier like this;

Comment by Nicolai Valenti on October 2, 2017 at 1:03am

yes, this is my rectifier. The amperage is 66 (-+) and voltage 18 (-+)

Comment by iSkyMaster on October 2, 2017 at 1:07am

What is the diode part number you have used for the above design?

Comment by Nicolai Valenti on October 2, 2017 at 2:09am

there are six diodes 

Comment by Tommy Larsen on October 2, 2017 at 6:50am
I'm using the brushless engine to start my gas engine. Then i switch to generator mode.
Comment by iw28 on October 2, 2017 at 10:37am

Thats a similar project ive made, we used the following brushless engine to start the gasengine:

and a similar circuit to this:

The part about this circuit could work both as the "harvester" when the engine is running and a starter for when the engine stops or etc

Comment by Nicolai Valenti on October 2, 2017 at 10:45am

please tell me which gas engine you have used, I want to buy one and I'm choosing

Comment by Charles Blouin on October 2, 2017 at 11:03am

A colleague of mine doing his phd was working on an inline power system for his thesis. It was to be used on a small airship: the inline generator could be used to recharge the batteries. It looks a bit like your setup! See page 11: https://ruor.uottawa.ca/handle/10393/31711


You need to be a member of DIY Drones to add comments!

Join DIY Drones

© 2018   Created by Chris Anderson.   Powered by

Badges  |  Report an Issue  |  Terms of Service