ASM Fuel Cell

Simulating a fuel cell system

ASM Fuel Cell is a model library for the real-time simulation of a proton exchange membrane (PEM) fuel cell system and makes it possible to set up a realistic test environment for the ECU under test.  

Application Areas

Fuel cells are becoming increasingly important, particularly in commercial vehicles, but also for stationary and aerospace applications. A typical cell system consists of an air supply path (connected to the cathode of the fuel cell), a hydrogen supply path (connected to the anode of the fuel cell), and a cooling circuit. The fuel cell system and its individual subsystems are controlled by ECUs that have to pass extensive tests before they can be introduced to the market.

One of the most widely used systems for mobile applications is the proton exchange membrane (PEM) fuel cell system, which is what the ASM Fuel Cell model library is for. ASM Fuel Cell makes it possible to set up a realistic test environment for the ECU under test, no matter whether it is used in a classic HIL or SIL case with the controller only, in a setup where the complete system or a subset of components has to be replicated, or even in a complete virtual system, i.e., virtual vehicle or aerospace application tests.  

Key Benefits

ASM Fuel Cell is shipped with a ready-to-use demo for a fuel cell electric vehicle (FCEV), where the PEM fuel cell system is a main component of the powertrain. The demo is designed to be used in a longitudinal powertrain setup for rear-, front-, or all-wheel drives or optionally without a powertrain where only the electrical system is the focus, i.e., for testbench or aerospace applications. It also lets you simulate the surrounding electrical infrastructure, such as battery and motor, as well as the electrochemical reactions within the fuel cell stack, the air and hydrogen supply, the tank system, and the cooling system. The performance of the fuel cell system is evaluated on the basis of the existing loss phenomena, including activation, ohmic, and concentration losses. The transport phenomena and the reaction mechanisms of the different gas types as well as water management are considered as well. You can use a network of soft ECUs  to control the vehicle and successively replace them with controllers under test. The fuel cell simulation model can be adapted to any customer application and parameterized accordingly.

ASM Fuel Cell is fully integrated into the ASM tool suite. This makes the model scalable for any application area – from component tests to complete system tests and from passenger cars, trucks, and buses to aerospace applications.


Success Stories


Emission-Free on the Road

Hyzon Motors: Developing and validating fuel cell technologies for commercial vehicles

Energy from the Cell

Shanghai Fuel Cell Vehicle Power System: Efficient development and validation of controller software for a fuel cell in commercial vehicles

Model Components
  • Fuel cell stack
  • Cathode
    • Compressor
    • Air cooler
    • External humidifier
    • Throttle valves
  • Anode
    • Tank and rail system
    • Injection valve
    • Drain valve
    • Recirculation pump
  • Cooling circuit
  • Soft ECU

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