A Plug-In Hybrid Electric Vehicle Concept with Fuel Cell Range Extender for Urban Delivery Transport Vehicle Application FKFS

Format:

Book

Conference/Event

Author/Creator:

Stoll, Tobias, author.

Contributor:

Berner, Hans-Juergen

Kulzer, Andre

Conference Name:

WCX SAE World Congress Experience (2023-04-18 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2023

Summary:

The electrification of vehicle fleets for urban delivery transport is becoming increasingly important due to ever stricter legal requirements and the high public pressure on companies. In this paper, a converted 3.5 t light-duty vehicle with a maximum gross weight of 7.5 t is presented. The vehicle has a serial hybrid electric powertrain with a maximum electric traction power of 150 kW and a 60 kW fuel cell range extender, and uses a 46 kWh battery with 400 V mean voltage level, resulting in a full electric range of 120 km. The electric drive is realized with an induction motor and a lithium-manganese-iron-phosphate (LMFP)-battery as well as a 2-speed gearbox. The fuel cell system has a fuel tank with 100 l volume and 700 bar pressure level, resulting in a total mass of around 4.2 kg of hydrogen. This enables an overall vehicle range of 400 km. For the fuel cell system, a newly developed concept with a rated power of 1.0 W/cm2 and an electrically assisted turbocharger is introduced [1]. To reach optimal results for the electric and the hydrogen energy consumption, the vehicle applies an operating strategy based on the Equivalent Consumption Minimization Strategy (ECMS). This operating strategy uses a global optimization algorithm in combination with the local optimized hydrogen consumption provided by the ECMS, to calculate the minimum possible energy consumption for the vehicle. This is achieved by using a reference drive cycle in charge sustaining mode. The vehicle is afterwards simulated with two additional drive cycles. The first drive cycle is a low load urban driving scenario with an overall range 7.85 km, the second a medium load urban delivery scenario simulating a vehicle day tour of 150 km and an overall duration of around 6 h and 45 minutes Both drive cycles are simulated in charge-depleting mode. Finally, the operation of the different powertrain components as well as the electric energy and hydrogen consumption is presented

Notes:

Vendor supplied data

Publisher Number:

2023-01-0491

Access Restriction:

Restricted for use by site license