Dielectric Fluid Cooling Channels for Dry-Type Transformer Heat
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current transformer cooling solutions are inadequate for medium and high voltage applications, and existing methods are limited in effectively managing heat dissipation across a wide range of voltage levels, leading to performance and cost challenges.
Innovation Solution
A transformer installation featuring a non-liquid immersed design with a magnetic core and dielectric cooling fluid channels for both coil and core windings, allowing for efficient heat absorption and dissipation through a dielectric cooling fluid system that can be applied to low, medium, and high voltage transformers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If water cooling is used in transformer coil windings, then cooling efficiency is improved, but the transformer can only be used for low voltage applications (up to 1 kV)
Solution Approach 1:
The patent introduces a dielectric cooling fluid as an intermediary substance that replaces water for cooling purposes. This dielectric fluid serves as a mediator that provides both cooling functionality and electrical insulation, enabling the transformer to handle medium and high voltages while maintaining effective heat dissipation from the coil windings and core.
2Temperature
If metallic serpentines are placed between coil winding turns for cooling, then heat dissipation is improved, but insulation requirements increase and limits voltage application to low voltage only
Solution Approach 1:
The dielectric cooling fluid acts as an intermediary that eliminates the need for metallic serpentines placed between winding turns. By circulating this electrically insulating cooling fluid through channels in the core and around the windings, the system achieves effective heat dissipation without compromising insulation reliability, thus enabling medium and high voltage applications.
3Temperature
If forced convection cooling is used, then cooling performance is improved, but device complexity increases
Solution Approach 1:
The patent employs hydraulic principles by circulating a dielectric cooling fluid through integrated channels within the transformer core and around the windings. This fluid circulation system provides forced convection cooling performance while maintaining relatively simple device architecture, as the cooling pathways are built into the core structure itself rather than requiring separate external cooling components.
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 solution enhances transformer performance and longevity while reducing operational costs by effectively managing heat across a broader range of voltage applications, improving cooling efficiency and extending the lifespan of the transformer.
Implementation Method 1
a dielectric cooling fluid to cool the coil windings and the magnetic core by guiding the dielectric cooling fluid through core cooling channels arranged within the core
Implementation Method 2
The transformer installation may further comprise at least one heat exchanging device fluidically connected to the transformer and configured to dissipate heat absorbed from the transformer by the dielectric cooling fluid
Data Source
AI summary
A transformer installation including at least one non-liquid immersed transformer having a magnetic core including at least two core legs each having a winding axis. The transformer further includes at least two coil windings wound around at least one of the core legs of the magnetic core about the winding axis. The transformer installation further includes at least one coil cooling tube defining a coil cooling channel for guiding a dielectric cooling fluid. The at least one cooling tube is wound about at least one of the at least two coil windings. The transformer installation further includes at least one core cooling channel arranged within the core. The core cooling channel is configured to guide a dielectric cooling fluid through the core.