šŸŽ‰We can now proudly present the winners of the TAPAS Community Challenge 2018! šŸŽ‰
Congratulations to Team "Wireless Charging" (idea 56). We are really excited for all finalists and a really big thank you to all participants for your interest in this challenge!

We got over 200 submissions! 65 ideas got one or more TAPAS boards, 10 submissions were presentation-ready.
And now we have 5 finalists! YEAH šŸ˜ƒ The finalist's idea numbers were 40, 56, 68, 212 and 213.
What's next?
We are now preparing the next steps for you, the community. Please stay tuned!
We are working on a forum and a separate webpage. If you have any question please don't hesitate to contact us via email!

Off-grid power from a car engine for emergency situations or camping

Many parts of everyday life in europe depend upon a continously working supply of electric power from the main european electric grid. Recent events (like the drop in frequency from a power shortage) have shown, that the grid is not as reliable as we all wish.

Heating your home in winter, water supply and many other things we take for granted will not work without a steady supply of electric energy. If power fails for more than a few days (especiallyĀ during winter in northern europe) an uncomfortable if not hazardous situation may grow quickly.

Some people therefore invest into emergency power generators: a small combustion engine with a generator that supplies some electric energy to power the most needed parts of your home.

Unfortunately, these small combustion engines do need regular maintenance to be as reliable as they should be. If you really need them, they will not work, because you neglected maintenance.

Additonally they are not environmentally freindly.

So here comes my idea: use a combustion engine that gets regularly maintained anyway, is environmentally freindly and up and running in seconds. Use your car as a power source.

A modern car engine, running in idle, will produce up to 2 kW electric power.Ā This will normally charge the 12 V battery and power the electric system of the car.

Every car manufacturer describes in the owners manual, where you may attach a jumper cable to jump start another car that has an empty battery. This connection point is strong enough to provideĀ continous power to an inverter.

The TAPAS inverter will be used to prototype an "emergency box" inverter system that attaches to the 12 V battery (using a jumper cable) and provides three 1AC 240 V andĀ one 3AC 400V outlet.

Why do we need 3AC? Because you can power a professional water pump with 3AC.

As motoric loads do typically draw very large starting currents, I will use the fast control features of the TAPAS to provide a soft start feature if motoric loads are attached.

The CAN controller of the TAPAS will be used to communicate with the car electronics to provide monitoring.

Note: The TAPAS will be used only for prototyping. The final product will have up to 2 kW electric power output.

  • Holger Waldmann
  • Mar 9 2018
  • Admin
    Nora Schille (TAPAS team) commented
    March 15, 2018 14:34

    Nice idea! Are you aware that you can't generate 400 V with the TAPAS board?

You can read the official challenge FAQ here!