Fuel Cell Compressor Control With Integrated Mass-Flow Sensing
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Solution Overview
Problem
Current compressor arrangements for fuel cell systems face challenges in system integration and regulation efficiency, as they rely on external communication and feedback loops between the fuel cell control system and compressor, leading to increased system inertia and complexity.
Innovation Solution
The compressor arrangement integrates a sensor arrangement within the compressor housing, allowing the compressor control system to directly regulate reactant supply by receiving target value signals and detecting control deviations, reducing reliance on the fuel cell control system and simplifying communication paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the fuel cell control system directly regulates compressor performance through external communication and feedback loops, then the control precision can be maintained, but the system inertia increases and regulation efficiency decreases
Solution Approach 1:
The patent merges the sensor arrangement with the compressor arrangement by integrating sensors directly into the compressor housing. This allows the compressor control system to directly access measurement data from sensors (mass flow sensor, pressure sensor, temperature sensor) without requiring external communication loops with the fuel cell control system, thereby reducing system inertia and improving regulation efficiency while maintaining control precision
2Reliability
If the fuel cell control system monitors and regulates reactant quantities through external sensors and communication, then the system can achieve controlled reaction, but the device complexity and communication overhead increase
Solution Approach 1:
The compressor arrangement is equipped with its own control system that autonomously monitors reactant quantities using integrated sensors and regulates compressor performance independently. The compressor control system receives reference variable signals from the fuel cell control system but performs the actual regulation locally, enabling the system to serve itself and reducing overall device complexity and communication overhead
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This integration reduces system inertia in reactant quantity regulation, enhances system integration, and minimizes external wiring and data transmission loads, enabling more efficient and direct control of compressor performance.
Implementation Method 1
at least one compressor stage which is designed to draw in a mass-flow of air, compress it, and deliver the compressed air mass-flow
Data Source
AI summary
A compressor arrangement for a fuel cell system, such as a vehicle fuel cell system, has at least one compressor stage configured to draw in a mass-flow of air, compress it, and deliver the compressed mass-flow. A compressor control system is configured to control the compressor stage, to be connected for signal exchange with a fuel cell control system, and to receive from the fuel cell control system control commands in the form of one or more reference variable signals. The reference variable signal contains a mass-flow target value signal, the compressor arrangement comprises a sensor arrangement with a mass-flow sensor for detecting the air mass-flow as a control variable. The compressor control system is connected for signal exchange with the sensor arrangement and is configured to generate a control signal for the compressor stage as a function of the control variable and the reference variable.