Electrolysis Converter Power Redirection for Sub-Second Ramp-Up
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electrolysis systems have ramp-up durations ranging from several seconds to minutes, which is incompatible with the 1-second maximum allowable ramp-up duration required by transmission system operators for AC grid stability during fault events.
Innovation Solution
An electrolysis system with an electrolysis converter that redirects electrical power input partly to an electrical load, such as a chopper-controlled resistance or energy storage system, to absorb power at a faster rate than the electrolyzer, allowing the electrolyzer to ramp-up within the required time limit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional electrolysis systems are used, then the electrolyzer can convert electrical power to energy carriers, but the ramp-up duration is too long (several seconds to minutes) to meet the 1-second maximum allowable ramp-up duration required by transmission system operators
Solution Approach 1:
The patent introduces an electrical load as an intermediary component that temporarily absorbs excess electrical power input when the electrolyzer cannot immediately process it. This mediator enables the system to meet the 1-second ramp-up requirement by redirecting power away from the electrolyzer during rapid transitions, preventing overshoot and instability while maintaining grid compliance
Solution Approach 2:
The system dynamically switches the electrical power input between the electrolyzer and the electrical load based on real-time operating conditions. The electrolysis converter adaptively redirects power to the electrical load when the electrolyzer reaches its maximum processing capacity or during fault conditions, enabling rapid response to grid requirements while maintaining electrolyzer operation within safe limits
2Duration of action of moving object
If the electrolysis converter redirects electrical power input to an electrical load, then the ramp-up duration is reduced to meet grid requirements, but the system complexity increases due to additional components and control mechanisms
Solution Approach 1:
The electrical load serves multiple functions: it acts as a temporary power sink during rapid ramp-up events, provides a safety mechanism during fault conditions, and enables the system to meet transmission system operator requirements. This multi-functionality justifies the added component by providing several critical benefits from a single addition
Solution Approach 2:
The control system continuously monitors the electrolyzer's power processing capacity and the grid's requirements, dynamically adjusting the power distribution between the electrolyzer and electrical load. This feedback mechanism ensures optimal performance while maintaining system stability during transient conditions and fault events
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 system meets the transmission system operators' requirements for rapid return to pre-fault conversion levels, enhancing AC grid stability by reducing the ramp-up duration to less than 1 second.
Implementation Method 1
the electrolysis converter is adapted to convert an electrical power output provided by the electrical energy source into the electrical power input
Implementation Method 2
an electrolyzer which is electrically connected to an electrical energy source via an electrolysis converter and adapted to absorb an electrical power input and to convert the electrical power input into an energy carrier
Implementation Method 3
an electrical load which is adapted to absorb the electrical power input, particularly all of the electrical power input, instead of the electrolyzer
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The invention relates to an electrolysis system (1) and a method for operating the electrolysis system (1) comprising an electrolyzer (2) which is electrically connected to an electrical energy source (3) via an electrolysis converter (4) and adapted to absorb an electrical power input (PEL) and to convert the electrical power input (PEL) into an energy carrier, wherein the electrolysis converter (4) is adapted to convert an electrical power output (POutput) provided by the electrical energy source (3) into the electrical power input (PEL) and to provide the electrical power input (PEL) to the electrolyzer (2). In order to reduce the ramp-up duration (tRecovery,1, tRecovery,2) of the electrolysis system (1), the electrolysis converter (4) is adapted to redirect the electrical power input (PEL) at least partly to an electrical load (5) which is adapted to absorb the electrical power input (PEL) faster than a ramp-up rate of the electrolyzer (2).