Compression Housing for Inductive Current Transformer Laminate Core
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Solution Overview
Problem
Current transformers experience reduced accuracy and parasitic power due to gaps between laminate layers and electrical contacts, leading to increased core losses and inefficiencies in electrical conductivity.
Innovation Solution
A compression housing with adjustable tapered mounting members and compression wedges is used to securely align and compress the laminate core against electrical contacts, reducing gaps and maintaining alignment during repeated openings and closings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the laminate core is allowed to move freely without compression, then the device complexity is reduced and ease of manufacture is improved, but gaps form between laminate layers and electrical contacts reducing accuracy and increasing core losses
Solution Approach 1:
The compression housing is divided into separate components: a housing body, removable compression members, and mounting members. This segmentation allows for simplified manufacturing of individual parts while achieving the required compression function through their assembly, resolving the contradiction between manufacturing simplicity and compression effectiveness.
Solution Approach 2:
The compression members are pre-configured with mounting members that engage with the housing body to automatically establish proper compression when assembled. This preliminary configuration ensures accurate alignment and compression without requiring complex adjustment mechanisms during final assembly, improving both manufacturing ease and alignment precision.
2Reliability
If compression is applied to reduce gaps between laminate layers, then electrical conductivity improves and core losses reduce, but the structure becomes more complex requiring additional compression components
Solution Approach 1:
The compression function is merged with the housing structure itself. The housing body incorporates features that directly apply compression to the laminate core through integrated mounting members, eliminating the need for separate complex compression mechanisms while achieving reliable electrical contact and reduced core losses.
Solution Approach 2:
The housing body serves multiple functions: it provides structural support, contains the laminate core, and simultaneously applies compression through its integrated mounting members. This multi-functionality reduces the need for additional dedicated compression components, simplifying the overall device while maintaining reliability.
3Measurement precision
If adjustable compression members are used to maintain alignment during repeated openings and closings, then measurement precision is improved, but ease of operation is reduced
Solution Approach 1:
The compression members are designed to be removable and reconfigurable, allowing the device to dynamically adapt between operational states. During normal operation, compression is maintained for precision; during maintenance or installation, the compression members can be easily removed to allow core replacement or adjustment, balancing precision with operational ease.
Solution Approach 2:
The compression members are designed as separate, recoverable components that can be temporarily removed during assembly or maintenance operations and then reinstalled to restore compression. This allows easy operation during critical phases while maintaining measurement precision during normal operation.
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 solution enhances electrical conductivity, reduces core losses, and improves the accuracy and efficiency of current transformers by minimizing gaps and maintaining secure contact between the laminate core and electrical contacts.
Implementation Method 1
A compression housing with adjustable tapered mounting members and compression wedges is used to securely align and compress the laminate core against electrical contacts
Implementation Method 2
A current transformer transfers electrical energy between two circuits through electromagnetic induction. The current transferred to a secondary circuit by the current transformer is proportional to the current on a primary circuit
Data Source
AI summary
A compression housing for a laminate core of an inductive current transformer is disclosed herein. The laminate core may include a portion wound with a secondary winding. The laminate core may be housed in the housing operable between opened and closed configurations. The compression housing may include contact plates for providing an electrical contact to the laminate core in closed configuration. The compression housing may include compression wedges to provide compression to the laminate core between the compression wedge and the contact plate. The current transformer may be used to obtain electric power and electric current measurements from a primary conductor.