Investigation and simulation of electric train utilizing hydrogen fuel cell and lithium-ion battery

This article includes a sensitivity analysis of a rolling stock hydrogen hybrid powertrain using different power splitting scenarios based on the load's frequency contents. The model used for this purpose mimics the dynamics of a hydrogen hybrid powertrain from the component scale. The simulated powertrain consists of five different subsystems including the lithium-ion battery, hydrogen fuel cell, vehicle dynamics, power split, and high-level controller. As a novel case study, utilizing a customised frequency based power splitting scenario, a realworld load profile is observed throughout an implemented observer subsystem. The duty cycle is extracted based on the real world drive cycles of the current Diesel Multiple Units (DMUs) which are currently running in the Greater Toronto Area (GTA), Ontario, Canada. The model and its submodules are implemented in the MATLAB Simulink. As a result, the sensitivity of the system to the frequency content of the drive cycle were assessed in terms of different parameters such as simulated power, voltage, temperature, and state of charge (SOC). As a conclusion, different scenarios are compared based on the level of their fidelity to the other related researches.

Automated summary

This study conducts a sensitivity analysis on a rolling stock hydrogen hybrid powertrain under different power splitting scenarios based on load frequency contents. The model simulates the dynamics of the hydrogen hybrid powertrain with five different subsystems. By implementing an observer subsystem, a real-world load profile is observed to extract the duty cycle based on current drive cycles.