Removable Core Transformer Design for Loss Reduction
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Solution Overview
Problem
Traditional transformers suffer from significant energy losses due to imperfections in core and coil materials, fabrication errors, and inefficient cooling, leading to reduced efficiency and component longevity, with the core being difficult to reuse and contributing to increased costs and waste.
Innovation Solution
A novel 2-phase transformer design with a removable core made of high-quality materials, coated to minimize eddy currents, and a temperature management subsystem for efficient cooling, allowing for the reuse of the core and optimizing operational conditions through forced air cooling and thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional core materials are used in transformers, then manufacturing cost is reduced, but energy loss increases due to hysteresis and eddy currents
Solution Approach 1:
The patent uses laminated core construction where thin sheets of ferromagnetic material are stacked together with insulating layers between them. This composite structure reduces eddy current losses while maintaining the magnetic properties needed for transformer operation, thereby reducing energy loss without prohibitively increasing manufacturing cost
Solution Approach 2:
The patent changes the physical parameters of the core material by using materials with specific hysteresis loop characteristics and controlling the grain orientation through controlled rolling and annealing processes. This optimizes the magnetic properties to minimize hysteresis losses while keeping manufacturing feasible
2Loss of energy
If coil materials of lower purity are used, then manufacturing cost is reduced, but energy loss increases due to ohmic heating
Solution Approach 1:
The patent specifies using high-purity copper or aluminum conductors with controlled impurity levels and optimized cross-sectional geometry. This reduces the resistivity of the coil materials, minimizing ohmic heating losses while maintaining reasonable manufacturing costs through standard industrial purification processes
3Reliability
If the core is permanently enclosed in resin with coils, then structural stability is improved, but core reuse becomes difficult when coils fail
Solution Approach 1:
The patent designs the transformer with separable core and coil assemblies. The core can be detached from the coil form, allowing the core to be reused when coils fail. This segmentation maintains structural stability during operation while enabling easy replacement and reuse of the expensive core component
Solution Approach 2:
The patent enables recovery and reuse of the core component when coil failure occurs. By designing for core separability, the valuable core material can be recovered and reused in new coil assemblies, reducing waste and manufacturing costs while maintaining structural integrity during normal operation
4Duration of action of stationary object
If conventional cooling methods are used, then device complexity is reduced, but thermal management efficiency is insufficient leading to reduced component longevity
Solution Approach 1:
The patent introduces an intermediary cooling medium (such as dielectric fluid or optimized air flow paths) between the hot coil assemblies and the external environment. This intermediary enables more efficient heat transfer while maintaining electrical insulation, extending component life without requiring overly complex active cooling systems
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
The design achieves greater than 99% efficiency, extends the life cycle of transformer components, reduces waste, and lowers operational costs by enabling the reuse of the core and optimizing thermal and electrical performance.
Implementation Method 1
coated to minimize eddy currents
Implementation Method 2
Hysteresis losses occur due to the electrical energy consumed by the magnetomotive forces necessary to reverse spontaneous magnetism (residual misalignment of dipoles) in ferromagnetic materials
Implementation Method 3
ohmic heating of the coils converting electrical energy into heat
Implementation Method 4
Energy is transferred through a transformer
Data Source
AI summary
A transformer apparatus that may be applied as a distribution circuit adaptor (DCA) inserted into a branch supply circuit to reduce losses in a power distribution network. More particularly, implementations of the present disclosure provide a high-efficiency 2-phase dry type transformer apparatus with a removable core, as well as integrated instrumentation and thermal self-management.