Magnetic Three-Phase Plug Indexing for 120° Auto-Alignment
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Solution Overview
Problem
Existing three-phase electrical connection systems require user intervention for proper orientation and cannot achieve reliable mechanical coupling in multiple angular positions, limiting their adaptability and reliability.
Innovation Solution
A three-phase electrical connection system utilizing a two-part magnetic indexing device with ferromagnetic yokes and permanent magnets, allowing for magnetic attraction and stable mechanical coupling in three distinct angular positions (120° offset) without the need for user intervention, using a hexapolar magnetic architecture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If magnetic means are used to enable mechanical coupling in multiple angular positions, then adaptability and reliability are improved, but device complexity increases due to the need for precise magnetic indexing mechanisms
Solution Approach 1:
The magnetic indexing device is segmented into two independent parts: a first part integrated into the socket and a second part integrated into the plug. Each part contains its own permanent magnets arranged in specific patterns, allowing the system to achieve multi-position coupling without requiring a complex integrated mechanism. This segmentation distributes the complexity across separate components while maintaining overall system adaptability.
Solution Approach 2:
The magnetic indexing device serves multiple functions simultaneously: it provides mechanical coupling force through magnetic attraction, establishes precise angular positioning through magnetic field interactions, and enables automatic connection without user intervention. The same magnetic fields that provide attraction also create the indexing effect for angular positioning, eliminating the need for separate mechanical indexing mechanisms.
2Ease of operation
If magnetic attraction is used for mechanical bonding, then ease of operation is improved by enabling automatic connection, but manufacturing precision requirements increase to ensure proper magnetic alignment
Solution Approach 1:
The permanent magnets are pre-installed and fixed in specific positions within the socket and plug components during manufacturing. The magnetic fields are pre-configured to create attraction zones and indexing positions, so that when the plug and socket are brought together, the magnetic coupling and angular positioning occur automatically without requiring real-time adjustment or high-precision alignment during operation.
Solution Approach 2:
The magnetic indexing device is self-aligning through magnetic field interactions. When the plug approaches the socket, the permanent magnets automatically generate attractive forces that guide the components into the correct angular position without external intervention. The system self-corrects minor misalignments through magnetic attraction, reducing the need for extremely tight manufacturing tolerances.
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
Enables reliable electrical connection in multiple angular positions, reducing manufacturing complexity and size constraints, while ensuring easy adaptation to three-phase systems without user intervention, making it suitable for applications like electric vehicle charging.
Implementation Method 1
The permanent magnets of the first part being magnetically attracted to the permanent magnets of the second part
Implementation Method 2
An annular yoke made of ferromagnetic material and comprising an axis of revolution
Data Source
AI summary
A three-phase electrical connection system includes a socket, a plug, and a two-part magnetic indexing device with two parts, one being fastened to the socket and the other being integral with the plug. Both parts have an annular yoke and a magnet set comprising three permanent magnets. The yoke comprises ferromagnetic material, an axis of revolution, and at least one revolution support face formed in a plane transverse to the axis of revolution. The face is divided into three distinct annular portions, each of which extends one-hundred and twenty degrees of arc. The three magnets are attached to a distinct annular portion of the yoke and are spaced from one another by a first non-zero angular interval. The magnets all have the same magnetic orientation parallel to the axis of revolution. The magnets of the two part are attracted to each other.