Modular Converter Cabinet System for Voltage Adaptation
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Solution Overview
Problem
Existing converter systems are not easily adaptable to different output voltages, requiring extensive modifications and additional components when higher output voltages are needed, limiting their flexibility and efficiency.
Innovation Solution
A modular converter cabinet system where converter cells are housed in multiple valve cabinets, allowing for individual adaptation of power converter output voltage by combining different configurations of valve cabinets with a separate reactor cabinet, enabling easy adjustment of the number of converter cells and branch inductors to achieve desired output voltages.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If converter systems use a fixed configuration of converter cells, then the system structure is simple and stable, but the system cannot be easily adapted to different output voltage requirements
Solution Approach 1:
The converter system is divided into modular valve cabinets, each containing a specific number of converter cells (e.g., two-valve cabinet with 4 cells, four-valve cabinet with 8 cells). These modular units can be independently combined in series to achieve different output voltages, enabling flexible adaptation without redesigning the entire system.
Solution Approach 2:
The system allows dynamic reconfiguration by connecting multiple valve cabinets in series with different numbers of converter cells. The output voltage can be adjusted by changing the series connection configuration of modular units, making the system adaptable to varying voltage requirements while maintaining a standardized modular structure.
2Power
If additional converter cells are added to achieve higher output voltages, then the output voltage capability increases, but the number of components and system complexity increase significantly
Solution Approach 1:
Instead of adding individual converter cells, the system uses pre-configured modular valve cabinets containing multiple cells (4 cells or 8 cells per cabinet). This segmentation allows voltage scaling by simply adding modular units rather than individual cells, reducing component count and system complexity.
Solution Approach 2:
Multiple valve cabinets are combined in series connection to achieve higher output voltages. Each cabinet is a self-contained module with integrated converter cells and support structures, so combining them increases voltage capability without proportionally increasing overall system complexity.
3Adaptability or versatility
If converter cells are distributed across multiple valve cabinets, then the system becomes adaptable to different voltages, but the busbar connection complexity increases
Solution Approach 1:
Each valve cabinet is designed as an independent modular unit with complete internal busbar connections for its converter cells. This segmentation isolates the busbar complexity within each module, so adding more cabinets does not linearly increase overall busbar complexity.
Solution Approach 2:
The standardized valve cabinet design provides universal busbar connection interfaces that can be consistently applied regardless of the number of cabinets or converter cells. This universal interface design simplifies the busbar connection process when scaling the system to different voltage levels.
Data Source
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AI summary
The invention relates to a modular converter cabinet system of a converter comprising at least one phase module (1, 3, 5) having an upper and a lower converter valve (T1,..., T6), wherein each converter valve (T1,..., T6) has at least two converter cells (2) and a branch inductor (LT1,..., LT6), which are electrically connected in series. According to the invention, the modular converter cabinet system comprises a first valve cabinet (24), a second valve cabinet (26) and an inductor cabinet (48), wherein the valve cabinets (24, 26) each have a plurality of valve levels (V1,..., V6) spaced apart one above another and having a plurality of honeycomb cells (46) arranged alongside one another, wherein the inductor cabinet (48) has a plurality of phase levels (P1, P2, P3) spaced apart one above another, and wherein in each case two valve levels (V1, V2; V3, V4; V5, V6) of at least one valve cabinet (24, 26) are electrically conductively connected in each case to a phase level (P1, P2, P3) of the inductor cabinet (48), which are arranged alongside one another. A converter cabinet system which can be individually adapted to different converter output voltages in a simple manner is thus obtained.