Fuel Cell

For reduced carbon emissions

Link to: Batterie


Link to: Brennstoffzelle

Fuel cell

Link to: Erneuerbare Energien


Link to: Automotive


Link to: Bahntechnik

Rail­way Techno­logy

Link to: Luftfahrt


Link to: Marine & Offshore

Marine &

Link to: Testautomation

Auto­matic testing

Link to: Fertigungs- und Prozessindustrie

Manu­factu­ring and
Process industry

The Features of Our Solutions

Paving the way for climate-neutral energy

A simple chemical reaction brings us a new chapter of new energy. Hydrogen and oxygen are combined to generate electricity, heat and water in a fuel cell, which is composed of an anode, cathode and an electrolyte membrane. Multiple fuel cells are assembled into a stack to obtain a higher current, and this fuel cell stack, brings to the market with a lot of different applications, e.g., transportation, energy storage, power backup, etc.. In order to obtain the fuel cell stack characteristic, typically we have performance and durability test. Fuel cell performance usually indicated by polarization curves by measuring its voltage and current. Durability test is the test after fuel cell stack reaches operating conditions, the stack is subjected to a continuous repetition of required duty cycle.

In both performance and durability test, electronic load is one of the key components in the test station. EA ElektroAutomatik, the leader of Europe DC power solution, offers regenerative dc electronic load with embedded programmable resistance feature. Regenerative is the industry standard for fuel cell stack testing, particularly beneficial for long hours operation. Programmable resistance mode (or XY table mode) could help engineers to simulate different load conditions.

Products used in the fuel cell industries

Application Solutions

Fuel Cell Stack Performance Test

Simulation of different VI characteristic

Polarization and power density curves of fuel cell stack is a common indication for the cell performance. These curves is usually assessed under the optimal operating conditions (temperature, humidity, electrocatalysis and ion-exchange membrane) of a fuel cell stack.

These measurements can be obtained easily by programming DC electronic load in different current or resistance profiles. EA ElektroAutomatik electronic load series, ELR 9000 3U / 9000 HP / 10000 4U, offers a wide variety of dynamic loading testing for fuel cell characterization.

Constant Resistance Mode
User can define a target resistance for drawing the desired current from the fuel cell stack. It can be easily adjusted via the intuitive HMI (Human Machine Interface) for altering the resistance value.

XY Table
User can define different loading current subject to different voltage, by loading this IV table to the unit. It is particularly useful for non-linear output characteristic verification.

Fuel Cell Stack Durability Test

Aging test

Being the active energy source in all kinds of application, it is always necessary to perform the durability test on fuel cell in order to ensure product safety and stability. In general, automotive standard requires 5,000 hours (~7 months) and stationary storage application even requires more than 10,000 hours.Step and triangular potential cycles are commonly used for shorten the long durability test time. However, it would be still a huge operating cost for a typical 100kW fuel cell stack system.

In order to optimize the energy usage, more and more fuel cell test stations are now equipped with regenerative DC electronic load for recycling the energy to grid, as well as returning the operating cost to factory owner. EA ElektroAutomatik electronic load series, ELR 9000 3U / 9000 HP / 10000 4U, offers high regenerative efficiency that could save energy and cost.

Moreover, user can perform accelerated test profiles (step or triangular) by the internal Function Generator in ELR series. Discharging Test function could provide the accumulated energy measurement result in addition.

Rectangle profile

Triangle profile

Dynamic Discharge Function

Accumulated Ah / Wh measurement

Case Studies

Series Connection and ultra-low minimum load voltage

Challenges on Fuel Cell Testing

Series Connection
Most of the fuel cell stack now operates on 500V-750V range. If customer would like to have the flexibility to fulfil high voltage and high current test requirement, EA ElektroAutomatik now launches the new SCB (series-box-connection) option for customer to configure the units in parallel (higher current) or in series (higher voltage).

* Please check with your local EA Sales Responsible for more technical details on series connection.

Example 1
  • Two units of 750 V in series
  • Permissible: Yes
  • Grounding required: No#
  • Restrictions: No
Example 2
  • Three units of 750 V in series
  • Permissible: Yes
  • Grounding required: Yes, either between unit 2 and 3  or between 1 and 2
  • Restrictions: No

Ultra-low minimum load voltage
Typically, the operating voltage of a single fuel cell is below 1.5V. It is always a tough challenge for an electronic load to pull high current in low voltage condition. EA ElektroAutomatik now brings you a single unit with up to 1000A test range with ultra-low low voltage.