Matrix Power Converter Layout for Stable AC-DC Wiring
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Solution Overview
Problem
Existing power converter devices for converting high-voltage three-phase AC to low-voltage DC lack a preferable configuration, particularly for devices like Solod State Transformers (SST), which face challenges in stabilizing low-voltage DC input/output, downsizing, and reducing necessary wiring.
Innovation Solution
A power converter device comprising a plurality of power conversion units arranged along two directions, with AC terminals connected in series and DC terminals connected in parallel, utilizing AC/DC and DC/DC conversion circuits to stabilize power flow and minimize wiring length.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If power conversion units are arranged in a conventional single-direction layout, then the device structure is simple, but the wiring length and device size increase
Solution Approach 1:
The patent applies dimensional change by arranging power conversion units in a two-dimensional matrix configuration rather than a conventional one-dimensional linear arrangement. The units are organized with AC terminals connected in series along a first direction and DC terminals connected in parallel along a second direction perpendicular to the first direction, creating a planar layout that reduces wiring length and device footprint while maintaining electrical functionality.
2Loss of substance
If AC and DC wiring are combined in the same direction, then the wiring structure is simple, but the wiring length and cost increase
Solution Approach 1:
The patent separates AC and DC wiring into different spatial dimensions by connecting AC terminals in series along the first direction and DC terminals in parallel along the second direction. This orthogonal wiring arrangement minimizes the total length of wiring required for both AC and DC connections while reducing wiring material costs and improving electrical isolation between AC and DC circuits.
3Reliability
If power conversion units are connected in a conventional configuration, then the connection structure is simple, but the input/output power stability decreases
Solution Approach 1:
The patent segments the power conversion system into multiple independent power conversion units arranged in a matrix, with AC terminals connected in series and DC terminals connected in parallel. This segmentation allows for modular construction and improves power stability by distributing the electrical connections across multiple units rather than relying on a single connection path.
Solution Approach 2:
The patent enhances power stability by creating a two-dimensional connection matrix where AC terminals are connected along the first direction and DC terminals along the second direction. This multi-directional connection architecture provides redundant electrical pathways and improves voltage stability compared to conventional single-direction connections.
Data Source
AI summary
Provided is a power converter device that can be properly configured. The power converter device is provided with: a plurality of power conversion units each comprising a pair of AC terminals, a pair of DC terminals, and a power conversion circuit for performing power conversion in one direction or in both directions between the AC terminals and the DC terminals and arranged along a first direction and a second direction different from the first direction; AC wiring for connecting the AC terminals of the plurality of power conversion units in series along the second direction with respect to each phase of three-phase AC; and DC wiring for connecting the DC terminals of the plurality of power conversion units in parallel along the first direction.