Hydrogen Flow Controller Applied to Driving Behavior Observation of Hydrogen Fuel Cell Performance Test

Area of Science:

• Automotive Engineering
• Electrochemistry
• Control Systems

Background:

• Dynamic load testing is crucial for evaluating fuel cell electric vehicle (FEV) performance under real-world driving conditions.
• Accurate hydrogen flow control is essential for simulating driving behaviors like load fluctuations, idle, and start-stop cycles.
• Existing systems may lack the precision needed for dynamic FEV testing.

Purpose of the Study:

• To design and manufacture an automatic hydrogen flow controller for dynamic performance testing of FEVs.
• To evaluate the accuracy and responsiveness of the developed controller using a heavy-duty vehicle driving simulation protocol.
• To investigate the impact of the automatic controller on fuel cell performance enhancement.

Main Methods:

• Development of an automatic hydrogen flow controller capable of regulating hydrogen flow over time.
• Implementation of a driving simulation protocol for heavy-duty vehicles to mimic real-world FEV operation.
• Experimental validation of the controller's accuracy, data tolerance, and response time.
• Comparative analysis of fuel cell performance using the automatic controller versus a traditional constant flow rate system.

Main Results:

• The automatic hydrogen flow controller demonstrated a data tolerance of approximately 0.84%, statistically insignificant from theoretical values.
• The controller exhibited a rapid response time to flow rate variations, within 1-2 seconds.
• Compared to a traditional controller, the automatic system increased single cell power by 16% and energy by 33% at a minimum current demand of 45 mA.

Conclusions:

• The developed automatic hydrogen flow controller is accurate and responsive, meeting the demands of dynamic FEV performance testing.
• This controller significantly enhances fuel cell operational performance, offering higher power and energy generation.
• The findings provide valuable insights for future fuel cell modifications and advancements in FEV technology.