Switchgear Energy Storage Layout for Variable Power and EMC Needs
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Solution Overview
Problem
Existing energy storage devices in switchgear cabinets lack flexibility and adaptability to different application scenarios, particularly in terms of cooling and electromagnetic compatibility, and require significant effort to reconfigure control and power electronics for varying power levels and drive systems.
Innovation Solution
The energy storage device features a scalable current controller and modular design, allowing for automated or semi-automated adaptation to different operating modes and applications without replacing modules, along with a reconfigurable cooling system and interchangeable storage blocks, including capacitors, batteries, and fuel cells, to optimize power and voltage levels. Additionally, an EMC filter can be easily inserted or removed to adjust for electromagnetic compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a cooling system is dimensioned for high performance classes, then high power applications are supported, but unnecessary cooling and weight occur for smaller power applications
Solution Approach 1:
The cooling system is designed with variable cooling capacity that can be dynamically adjusted based on the actual power level and thermal load of the installed storage blocks and power electronics. This allows the cooling system to operate efficiently across different performance classes without being overdimensioned for any single application.
Solution Approach 2:
The cooling system is designed to universally support multiple performance classes and application scenarios within a single configuration. It can adapt to different numbers and types of storage blocks (capacitors, batteries, fuel cells) and power electronic components, providing appropriate cooling capacity for each scenario without requiring separate systems.
2Object-affected harmful factors
If a switchgear cabinet is configured for high electromagnetic compatibility, then electromagnetic interference is reduced, but construction space and weight are wasted for applications with smaller electromagnetic compatibilities
Solution Approach 1:
The electromagnetic compatibility configuration is made adjustable based on the specific application requirements. EMC filters and shielding can be selectively installed or removed depending on the sensitivity of the connected equipment and the electromagnetic environment, allowing optimization between protection level and space utilization.
Solution Approach 2:
Electromagnetic compatibility measures are applied locally and selectively rather than uniformly throughout the entire switchgear cabinet. EMC filters are installed only where needed based on the specific power electronics and storage blocks present, and shielding is applied only to sensitive components or high-interference areas.
3Adaptability or versatility
If control and power electronics are replaced for different application purposes, then adaptation to different drive systems is achieved, but conversion effort increases
Solution Approach 1:
The control and power electronics are designed with universal interfaces and configurable parameters that allow them to work with different types of drive systems and storage blocks. Rather than replacing components for different applications, the existing components can be reconfigured through software or parameter adjustment to suit different operational requirements.
Solution Approach 2:
The control and power electronics are pre-configured with multiple operational modes and parameter sets that can be selectively activated based on the application. This preliminary preparation allows quick adaptation to different drive systems without requiring physical replacement or extensive reconfiguration work.
4Adaptability or versatility
If storage blocks are selectively interconnected in series or parallel, then voltage and current requirements are met, but system complexity increases
Solution Approach 1:
The interconnection configuration of storage blocks is made dynamically switchable between series and parallel arrangements. Switching devices and control logic automatically adjust the connection topology based on the required voltage and current levels, allowing the system to adapt to different operational modes without manual reconfiguration.
Solution Approach 2:
The system includes automatic detection and configuration capabilities that sense the installed storage blocks and their requirements, then automatically configure the appropriate series or parallel interconnections without user intervention. This self-service approach simplifies operation while maintaining the ability to meet various voltage and current requirements.
Data Source
AI summary
The present invention relates to an energy storage device, comprising a switchgear cabinet housing in which a plurality of receiving spaces are provided, in which receiving spaces at least one control device and a variable number of electrical storage blocks are accommodated in an exchangeable manner, wherein the storage blocks can be selectively interconnected in series or in parallel and are connected to power connections by means of a current controller. Therefore, it is initially proposed to form the control device which is installed in the switchgear cabinet housing and the associated power electronics components themselves in a reconfigurable or variable manner in order to allow the controller and power electronics to be matched to another mode of operation or another application, without having to exchange the control and power electronics module and provide corresponding wiring for this purpose.