Variable Resistive Load Bank Controller

Introduction

A variable resistive load bank controller helps engineers test fuel cells with accuracy, repeatability, and full automation.

Introduction

Fuel cell testing requires a stable, adjustable, and repeatable load. Without this control, it becomes difficult to compare results or track long-term behaviour. A smart resistive load bank solves this by switching resistor elements in and out to create controlled load steps. The GOcontroll Moduline L4 offers a strong base for this kind of setup thanks to its modular design, rugged aluminium enclosure, and wide range of I/O options. Because it allows solid-state contactors, sensors, and logic to work together, it turns a basic resistor bank into a flexible laboratory tool.

A Modular Platform for Load Bank Control

Accurate and Repeatable Load Control

Closed-Loop Operation for Dynamic Testing

Closed-loop control is important for advanced tests. The Moduline L4 can adjust its outputs based on real-time measurements, allowing it to follow a target load profile automatically.
With this method, the controller can:

• Increase load when current falls
• Reduce load when voltage sags
• Create smooth step profiles
• Run automated sweep tests
• Simulate dynamic operating cycles

Because the logic runs directly on the controller using Linux services, communication delays stay low, and response times stay consistent.

Clear Dashboards and Data Logging Through Node-RED

Fast Development and Model-Based Logic

A Scalable and Robust Test Platform