Da quello che ho capito (tradotto dall'inglese, il mio livello è scolastico con poco ripasso...)
parla proprio di "pusher-trailer" e lo mette in confronto con il sistema a sola generazione di corrente....
e la seconda versione è in effetti più corto....
http://www.jstraubel...r/EVpusher2.htmvai al sito...
http://www.jstraubel.com/Generator benefits:
* Energy can be stored in the batteries when IC output is greater than needed.
* The IC load is very level as the generator output can be nearly constant.
* No transmission is needed
* Standard trailer dynamics apply
However, this approach suffers from the inherent problem that the energy is transformed from mechanical (at the IC shaft) into electrical, and then back to mechanical (at the EV motor.) The energy will in the best case go through the generator, EV motor controller, and EV motor. In the worst case it will also cycle in and out of the batteries. All of these conversions deal a serious blow to the best efficiency possible. For a typical EV system you will need between 1/2 and 2/3 of the IC horsepower to simply push the car as you will to generate enough electricity to drive it.
Pusher Benefits:
* Fewer energy conversions Chemical--->Themal--->Mechanical
* Less IC horsepower needed
* Potentially lighter than a gen. trailer (smaller generator, less fuel, less IC hp)
* EV system does not need to be sized for continuous use
* Cheaper (no generator, more standard automotive parts)