Harnessing Energy from Stopping Vehicles

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Discussion Overview

The discussion revolves around the concept of harnessing energy from vehicles during braking, particularly focusing on the feasibility of using alternators or generators to recover energy that would otherwise be wasted when a vehicle comes to a stop. The scope includes theoretical considerations and practical applications related to electric and hybrid vehicles.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant proposes the idea of using alternators or generators on each wheel to recover energy during braking, questioning the plausibility of controlling the stopping force through current regulation.
  • Another participant points out that hybrid vehicles already implement a similar concept known as regenerative braking, which can recover 50-75% of the energy lost during braking.
  • A different viewpoint expresses skepticism about the effectiveness of hybrids, arguing that they add weight and complexity, suggesting instead that a small, efficient petrol or diesel engine might be a better solution.

Areas of Agreement / Disagreement

Participants express differing views on the effectiveness of hybrid vehicles and the practicality of the proposed energy recovery method, indicating that multiple competing perspectives remain without a clear consensus.

Contextual Notes

The discussion does not resolve the technical feasibility of the proposed method or the efficiency of hybrid systems, and assumptions regarding energy recovery rates and vehicle design considerations are not fully explored.

Fuzigish
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With all the electric/hybrid cars becoming part of everyday life, I’ve been thinking about all the energy going to waste when ‘n vehicle has to come to a stop. Would it be possible to use alternators/generators to make use of that energy to make the vehicle come to a stop? As I understand, the more current being ‘pulled’ from an alternator, the more force the magnetic fields would try and stop rotation. Using current regulation would it be possible to control the stopping force, if an alternator was put on each wheel? Is this whole scenario plausible?

Sorry for bad English (not my first language).

Thanks
 
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This is exactly what hybrids do. An electrical motor run backward is the same as a generator. It's called regnerative braking and gets back 50-75% of the wasted energy.
 
Thanks, didn't know.
 
I don't think hybrids really work. You are adding weight and complication.

Better to have a small vehicle with an efficient as possible petrol/Diesel engine.. Eg .. Toyota Aygo (also badged as Citroen C1)
 

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