Surge Voltage Reducing Member Using Parallel Winding on U-Shaped Cores

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Solution Overview

Problem

Existing surge voltage reducing members, such as those with toroidal cores, increase product size due to the winding of power supply AC wires, necessitating a compact alternative.

Innovation Solution

A surge voltage reducing member featuring a magnetic body with a long-side portion and short-side portions, where conductive paths are wound parallel along the longitudinal direction of the long-side portion, reducing the height and width compared to annular configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If power supply AC wires are wound around annular toroidal cores, then surge voltage reduction function is achieved, but product size increases

Engineering Contradiction:

Improvesurge voltage reduction functionVSAvoidproduct size

Core Design Contradiction:

ReliabilityVSVolume of stationary object

Solution Approach 1:

The patent divides the single annular toroidal core into multiple separate U-shaped magnetic cores. Each U-shaped core has conductive paths wound around its long-side portion, creating segmented magnetic circuits that collectively achieve the same surge voltage reduction function as a single large toroidal core, but with reduced overall volume

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent changes the winding arrangement from circumferential winding around an annular core to parallel winding along the longitudinal direction of U-shaped cores. This dimensional reconfiguration allows conductive paths to be arranged side by side rather than in a circular pattern, reducing the height and width of the magnetic body

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Reliability

If conductive paths are wound around annular magnetic bodies, then electrical connection is established, but height and width of magnetic body increase

Engineering Contradiction:

Improveelectrical connectionVSAvoidheight and width of magnetic body

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

Instead of winding conductive paths around the external circumference of an annular core, the patent inverts the approach by winding paths around the long-side portion of U-shaped cores with the magnetic flux path oriented perpendicular to the winding direction. This inversion reduces the external dimensions of the magnetic body

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent positions multiple U-shaped magnetic cores and their associated conductive paths in a nested or compact side-by-side arrangement. The conductive paths are wound parallel to each other along the longitudinal direction, allowing efficient space utilization and reduced overall dimensions compared to separate annular configurations

Inventive Principle:

Principle #7Nested doll (Nesting)

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 reduces the size of the surge voltage reducing member while maintaining the conductive paths' arrangement, thereby effectively reducing surge voltage and product size.

Implementation Method 1

a magnetic body including a long-side portion and short-side portions continuously formed at both ends of the long-side portion in a longitudinal direction; and a plurality of conductive paths wound around the long-side portion

Methodology Applied

Scientific EffectMagnetic flux: Magnetic Field

Data Source

PatentUS10958064B2Surge voltage reducing member with reduced size

Publication Date: 2021.03.23 YAZAKI CORP

AI summary

A surge voltage reducing member includes: a magnetic body including a long-side portion and short-side portions continuously formed at both ends of the long-side portion in a longitudinal direction; and a plurality of conductive paths wound around the long-side portion. Each of the conductive paths is wound in parallel along the longitudinal direction of the long-side portion.