Air-Core Reactor Coil Layout for Auxiliary Circuit Coupling
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Solution Overview
Problem
High-voltage power transmission systems require additional equipment to connect filters or auxiliary circuits, which increases costs and complexity, and existing solutions often necessitate the use of bulky or high-voltage components.
Innovation Solution
An air-core reactor design featuring a main coil and an auxiliary coil, where the auxiliary coil is magnetically coupled to the main coil without an iron core, allowing for the connection of low-power auxiliary devices without the need for additional high-voltage or bulky components, thereby simplifying and cost-reducing the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional equipment is used to connect filters or auxiliary circuits to high-voltage power transmission devices, then the connection function is achieved, but the system cost and complexity increase
Solution Approach 1:
The patent combines the auxiliary circuit connection function directly into the air-core reactor structure by integrating an auxiliary coil with the main coil. This merging eliminates the need for separate additional equipment to connect auxiliary circuits, thereby reducing system complexity while maintaining adaptability for connecting filters and auxiliary devices.
Solution Approach 2:
The air-core reactor is designed with multi-functionality by incorporating both main coil and auxiliary coil capabilities within a single device. The reactor can simultaneously perform main power transmission and auxiliary circuit functions (such as filter connection), reducing the need for separate dedicated equipment and lowering overall system complexity.
2Adaptability or versatility
If additional equipment is used to connect filters or auxiliary circuits, then the connection function is achieved, but the system cost increases
Solution Approach 1:
By merging the auxiliary coil into the air-core reactor structure, the patent eliminates the need to manufacture and install separate additional equipment for auxiliary circuit connections. This integration reduces material costs, manufacturing complexity, and installation expenses while maintaining the capability to connect filters and auxiliary circuits.
3Reliability
If traditional reactors with iron cores are used, then magnetic coupling is achieved, but the device becomes bulky and requires high-voltage components
Solution Approach 1:
The patent extracts the iron core from the traditional reactor design, creating an air-core reactor. This removal eliminates the bulk associated with iron cores while maintaining magnetic coupling functionality through the air-core configuration. The extraction of the iron core directly reduces device size and eliminates the need for bulky high-voltage components.
Solution Approach 2:
The patent changes the magnetic path parameter from an iron core to an air core. This parameter change fundamentally alters the magnetic coupling mechanism, enabling the reactor to achieve necessary magnetic coupling without the bulk and high-voltage component requirements associated with traditional iron-core designs.
4Volume of moving object
If air-core design is used, then device size is reduced, but achieving sufficient magnetic coupling becomes challenging
Solution Approach 1:
The patent employs a nested configuration where the auxiliary coil is positioned within or adjacent to the main coil structure. This nesting arrangement maximizes magnetic coupling between coils while maintaining a compact air-core design, achieving sufficient coupling without increasing device size or requiring iron cores.
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
This configuration enables efficient harmonic damping and fault current management in power transmission systems, reducing the need for extra equipment and maintaining system integrity while minimizing costs.
Implementation Method 1
The auxiliary coil may also be magnetically coupled to the main coil
Data Source
AI summary
Air-core reactors for use with power transmission systems are disclosed. An example air-core reactor may include a main coil and an auxiliary coil. The main coil may include a first solenoid having a first diameter and a second solenoid having a second diameter, wherein the first diameter and the second diameter are different. The auxiliary coil may include a third solenoid. The first solenoid and the second solenoid may be arranged concentrically. The auxiliary coil may also be magnetically coupled to the main coil, and the auxiliary coil may be arranged concentric to the main coil.