{{Unsourced|date=May 2021}} {{notability |date=November 2025}} '''Triple-hybrid''' is a registered trademark (German Trademark DE 307 68 078, European Community trademark application CTM 010704237) of the [[German company]] Proton Motor Fuel Cell GmbH which is used to designate a special drive system that has been developed and patented by Proton Motor Fuel Cell GmbH (European Patent EP 1 868 837 B1). Other than conventional [[Hybrid vehicle|hybrid]] drive systems comprising only two sources of energy, namely a combustion engine and an electric motor, Proton Motor Fuel Cell's '''Triple-hybrid''' drive system comprises three sources of energy, namely [[hydrogen]] [[Fuel Cell|fuel cells]], [[Battery (electricity)|batteries]], and [[ultracapacitor]]s to power, store and capture energy during [[Brake|braking]] of vehicle.
== Main Components ==
In the special drive system developed by the captioned [[Joint venture|joint-venture]] project, the basic power source is a liquid-cooled [[proton exchange membrane fuel cell]] (Proton’s “PM Basic A 50” fuel-cell system). Lead-gel [[Battery (electricity)|batteries]] and [[ultracapacitor]]s are the additional power sources.
== Modes of Operation ==
Like other [[Fuel Cell|fuel cell]] powered vehicle, the [[proton exchange membrane fuel cell]] in this drive system uses [[hydrogen]] to produce electric power to [[Electric motor|motor]]. When the vehicle is stationary, the [[proton exchange membrane fuel cell]] recharges both the lead-gel [[Battery (electricity)|batteries]] and the [[ultracapacitor]]s.
During peak energy requirements the lead-gel [[Battery (electricity)|batteries]] and [[ultracapacitor]]s provide additional electric power, in parallel to the [[proton exchange membrane fuel cell]], to the [[Electric motor|motor]].
During [[Brake|braking]], energy, the [[Regenerative brake|regenerative braking]] energy, is captured in the lead-gel [[Battery (electricity)|batteries]] and the [[ultracapacitor]]s.
==References== {{reflist}}
== External links == * [http://www.sae.org/mags/TBE/6474 First 'triple-hybrid' fuel-cell bus goes into service], Society of Automotive Engineers, retrieved on 10-06-2009 * [http://www.hybridmile.com/news/proton-motor-skoda/ Proton Motor, Skoda Electric, UJV Collaborate on Fuel Cell Bus], HybridMile.com, 21-05-2009, Retrieved on 10-06-2009 * [http://www.proton-motor.de/ Proton Motor Fuel Cell GmbH]
[[Category:Automotive technologies]] [[Category:Hybrid vehicles]] [[Category:Hybrid powertrain]]