Transformer Coil Line Layout for Magnetic Field Cancellation
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Solution Overview
Problem
Transformers with high isolation between the primary and secondary sides generate significant magnetic field interference, leading to increased ripple noises and electromagnetic interferences.
Innovation Solution
The transformer apparatus includes an iron core, coil units, and current transmission lines with insulation layers, where the insulation layers of adjacent current transmission lines are configured to touch each other, allowing the magnetic fields generated by currents in one line to counteract those in another, thereby reducing overall magnetic field interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the wire length of the coil is elongated to achieve high isolation between primary and secondary sides, then isolation performance is improved, but magnetic field interference increases
Solution Approach 1:
The patent applies the principle of converting harm into benefit by using the magnetic field interference generated by the elongated coil wires as a beneficial counteracting force. Specifically, the current transmission lines are arranged such that their magnetic fields interfere with each other in a way that reduces the overall external magnetic field interference. The insulation layers touching each other creates a configuration where adjacent current-carrying conductors generate opposing magnetic fields that cancel each other out, thus converting the harmful magnetic field effect into a beneficial cancellation mechanism.
2Object-generated harmful factors
If current transmission lines are arranged with touching insulation layers, then magnetic field interference is reduced, but device complexity increases
Solution Approach 1:
The patent applies the merging principle by combining multiple current transmission lines into a tightly integrated configuration where insulation layers touch each other. This merging of conductors into a compact arrangement allows the magnetic fields to cancel each other effectively. By merging the transmission lines in this specific configuration, the patent achieves magnetic field reduction while the increased complexity is offset by the functional benefit of reduced electromagnetic interference.
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 effectively minimizes magnetic field interference outside the transformer coils, reducing ripple noises and electromagnetic interferences.
Implementation Method 1
the insulation layers of adjacent current transmission lines are configured to touch each other, allowing the magnetic fields generated by currents in one line to counteract those in another, thereby reducing overall magnetic field interference
Implementation Method 2
Transformers are electronic circuits that can increase the voltage or decrease the voltage by applying the Faraday's electromagnetic induction law
Data Source
AI summary
A transformer apparatus reducing magnetic field interference includes an iron core, a first side coil unit, a second side coil unit, a first current transmission line, a second current transmission line and a third current transmission line. Both the first side coil unit and the second side coil unit are wound around the iron core. The first side coil unit is connected to the first current transmission line and the second current transmission line. The second current transmission line is connected to the third current transmission line. The first current transmission line includes a first current conduction segment and a first insulation layer. The first insulation layer coats the first current conduction segment. The third current transmission line includes a second current conduction segment and a second insulation layer. The second insulation layer coats the second current conduction segment. The second insulation layer touches the first insulation layer.