Reactor Core Potential Inversion for High-Power Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
High-voltage high-power supplies face challenges with reactor core grounding, leading to increased volume and cost due to stringent insulation requirements, which compromise efficiency, power density, and reliability.
Innovation Solution
The core of the reactor is electrically connected to a potential point within the high-power conversion system, allowing for alternative grounding configurations that reduce volume and cost while maintaining safety and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cores of reactors are grounded, then the safety requirement on windings to cores is basic insulation, but the electric clearance distances and creepage distances become more stringent resulting in higher volumes and costs
Solution Approach 1:
Instead of grounding the reactor cores to ground potential, the patent inverts the approach by connecting the cores to a neutral point of the power supply system. This reversal eliminates the need for basic insulation between windings and cores, allowing for reduced electric clearance distances and smaller reactor volumes while maintaining safety through functional insulation requirements instead.
Solution Approach 2:
The patent changes the potential reference parameter from ground potential to power supply neutral point potential. This parameter change transforms the insulation requirement from basic insulation (with stringent clearance distances) to functional insulation, thereby reducing the volume requirements for reactors while maintaining equivalent safety levels.
2Reliability
If the cores of reactors are grounded, then safety is ensured, but the costs of reactors increase due to larger volumes
Solution Approach 1:
The patent inverts the traditional grounding approach by connecting reactor cores to the power supply neutral point instead of ground. This inversion reduces the required electric clearance distances and allows for smaller reactor volumes, directly lowering manufacturing costs while maintaining safety through functional insulation requirements.
Solution Approach 2:
By changing the potential reference from ground to neutral point, the patent reduces the insulation distance parameters required for basic insulation. This parameter change enables smaller, less expensive reactors to be manufactured while achieving equivalent safety performance through functional insulation standards.
3Reliability
If the cores of reactors are grounded, then floating voltage is eliminated, but the volumes of reactors become larger
Solution Approach 1:
Instead of using ground connection to control floating voltage, the patent inverts the approach by connecting cores to the neutral point of the power supply. This alternative connection method effectively controls floating voltage through the neutral point reference, eliminating the need for larger reactor volumes that would result from traditional grounding with basic insulation requirements.
4Reliability
If basic insulation is used for windings to cores, then safety is ensured, but the electric clearance distances are more stringent compared to functional insulation
Solution Approach 1:
The patent inverts the insulation approach by changing the potential reference from ground to neutral point. This inversion allows the use of functional insulation instead of basic insulation between windings and cores, significantly reducing the required electric clearance distances while maintaining equivalent safety levels.
Solution Approach 2:
The patent changes the insulation type parameter from basic insulation to functional insulation by altering the potential reference configuration. This parameter change reduces the electric clearance distance requirements while maintaining the same safety performance, enabling more compact reactor designs.
Data Source
AI summary
A high-power conversion system includes a switching circuit and at least one reactor, the at least one reactor being electrically connected to the switching circuit, and the core of the at least one reactor being electrically connected to a potential point of the high-power conversion system.