Presentation on theme: "Authors: Pia Žnidaršič, Tina Rejc, Mitja Železnik Mentor: Tomaž Kušar."— Presentation transcript:
Authors: Pia Žnidaršič, Tina Rejc, Mitja Železnik Mentor: Tomaž Kušar
Charging wireless charging solar panels regenerative braking
Hypothesis A good part of the car’s kinetic energy can be converted into electricity with the use of regenerative braking system. In such a way, we can improve the car’s efficiency. The electric car still needs ordinary brakes alongside the regenerative braking system due to its slow braking ability.
The construction of the electric car
video clip: our experimentour experimentResearch We tried to find out an answer to the question: how to improve the electric car‘s efficiency? 1. We compared a basic diode and light emitting diode. 2. We also used different capacities of a capacitor.
At first we measured the braking distance while the DC motors weren‘t connected to an electric circuit. Total potential energy is converted to the force of friction (braking force). Measurements Then we measured the amount of electricity converted from kinetic energy by the DC motors (generators). braking distance
Results These results were obtained on the basis of length measurement and calculated potential energy. Then we measured the amount of electricity we actually got in each case.
The results of the circuit by a simple diode are better, because the basic diode consumes less power. By increasing the capacitor‘s capacity we can store more electricity. The amount of stored electricity also depends on the braking distance. Results
Literature  Tesla motors, available at http://www.teslamotors.com/http://www.teslamotors.com/  List of electric cars currently available, available at http://en.wikipedia.org/wiki/List_of_electric_cars_currently_available  How Does Regenerative Braking Work? Available at http://www.carsdirect.com/green-cars/how-does-regenerative-braking-work http://www.carsdirect.com/green-cars/how-does-regenerative-braking-work  Regenerative brakes, available at http://en.wikipedia.org/wiki/List_of_electric_cars_currently_available http://en.wikipedia.org/wiki/List_of_electric_cars_currently_available  The Kinetic Energy Storage, available at http://www.youtube.com/watch?v=ZHgN1- Qv9LUhttp://www.youtube.com/watch?v=ZHgN1- Qv9LU  Regenerative braking, available at http://www.cyberphysics.co.uk/topics/energy/regenerative_braking.htm http://www.cyberphysics.co.uk/topics/energy/regenerative_braking.htm  What is the regenerative braking system?, available at http://www.alke.com/brake- energy-recovery.htmlhttp://www.alke.com/brake- energy-recovery.html