Scaled test bench for the measurement of a hybrid full-electric powertrain efficiency

Abstract

In the evolving landscape of transportation, sustainability and efficiency are priorities. Hybrid energy systems, integrating batteries, fuel cells, or solar power, offer promising solutions but pose challenges in accurately measuring efficiency. The proposed Measurement Scale Bench is crucial for evaluating traction systems powered by hybrid sources. It simulates real-world scenarios, balancing energy management through hydrogen fuel cells and batteries. The system comprises three blocks: one for fuel cells, one for batteries, and one for propulsion, hydrogen consumption measurement, and motor performance evaluation. Experimental tests validate its effectiveness in replicating urban and exurban cycles, making it an ideal scale model for hybrid vehicles, following the UNI EN 1986–1:1998. It reveals consistent behaviour between engine energy demand, speed variations, and energy storage responses, providing valuable insights for hybrid vehicle development. Moreover, the bench's modularity not only supports diverse system configurations but also serves as an educational tool, inspiring and promoting innovation in sustainable transportation.