FCEV Fuel Cell Refresh Timing for Microgrid Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The formation of an oxide film on the catalyst electrode of a fuel cell reduces its power generation efficiency, and existing systems struggle to effectively remove this film while managing power supply and demand in a microgrid.
Innovation Solution
A server adjusts the execution timings of fuel cell electric vehicles to perform a refresh process intermittently and restricts the number of vehicles executing this process to prevent overlap, using power storage facilities to absorb any increase in power supply, thereby maintaining power balance in the microgrid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fuel cell executes the refresh process to remove the oxide film, then the power generation efficiency is improved, but the power supply stability to the microgrid deteriorates due to temporary power increase
Solution Approach 1:
The refresh process is executed periodically at predetermined intervals rather than continuously, allowing the fuel cell to alternate between normal power supply mode and refresh mode. This periodic execution removes oxide films to maintain power generation efficiency while limiting the duration and frequency of power fluctuations, thereby maintaining overall power supply stability to the microgrid.
Solution Approach 2:
The control unit predicts future power supply/demand situations before executing the refresh process. By analyzing forecasted power supply and demand data, the system schedules refresh operations during periods when power fluctuations will have minimal impact on microgrid stability, thus preparing in advance to balance catalyst maintenance with grid reliability.
2Productivity
If multiple fuel cell electric vehicles execute the refresh process simultaneously, then the oxide film removal efficiency is improved, but the power grid stability deteriorates due to excessive power increase
Solution Approach 1:
The refresh process execution is segmented and distributed across multiple fuel cell electric vehicles rather than executing simultaneously in all vehicles. The control unit manages each vehicle's refresh process independently at different times, preventing excessive concentrated power increases while ensuring that oxide films are removed across the entire fleet, thus balancing productivity with grid stability.
3Reliability
If the refresh process is executed frequently to maintain power generation efficiency, then the catalyst performance is improved, but the power supply demand fluctuation increases
Solution Approach 1:
The control unit monitors the actual power supply situation and catalyst state in real-time, using this feedback to dynamically adjust the refresh process execution timing and frequency. When power supply conditions are stable and catalyst performance degrades, refresh operations are triggered; when power fluctuations are already high, refresh operations are delayed or cancelled, thus maintaining catalyst performance while responding to actual grid conditions.
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
The oxide film is appropriately removed without significantly impacting the power grid's stability, ensuring efficient power supply and demand management.
Implementation Method 1
a plurality of fuel cell electric vehicles that supply electric power to a microgrid with a server that manages the plurality of fuel cell electric vehicles
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A power management system (100) includes a plurality of power adjustment resources electrically connected to a microgrid (MG), and a CEMS server (2) that manages the plurality of power adjustment resources. The plurality of power adjustment resources include a plurality of FCEVs (9) that supply electric power to the microgrid (MG). Each of the plurality of FCEVs (9) executes a refresh process that removes an oxide film formed on a catalyst electrode of an FC stack (906) by causing the FC stack (906) to generate electric power exceeding prescribed electric power. The CEMS server (2) adjusts execution timings of the refresh process in the plurality of FCEVs (9) during power supply to the microgrid (MG), so as to respond to a request to adjust power supply and demand in the microgrid (MG).