Rotatable Inner Core Multi-Phase Iron-Core Reactor Inductance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional multi-phase iron-core reactors require multiple component types and replacements to adjust inductance, leading to increased complexity and costs.
Innovation Solution
A multi-phase iron-core reactor design featuring an outer iron core with teeth and a rotatable inner iron core that can selectively provide at least two gap sizes, allowing for adjustable inductance without replacing components by changing the orientation of the inner core.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the magnitude of inductance is adjusted with the size of the gap, then the inductance value can be adjusted, but a plurality of types of support members have to be prepared and replaced, increasing device complexity
Solution Approach 1:
The inner iron core is made rotatable about the central axis, allowing dynamic adjustment of the gap size between the outer iron core and inner iron core by changing the radial position of the inner core. This dynamic mechanism eliminates the need for multiple static support member types, as the same structure can provide different gap sizes through rotation.
Solution Approach 2:
The gap size parameter is changed by altering the radial position of the inner iron core relative to the outer iron core. By rotating the inner core to different angular positions, the effective gap distance varies, thereby adjusting the inductance value without requiring multiple physical components.
2Adaptability or versatility
If the magnitude of inductance is adjusted with the number of turns of the windings, then the inductance value can be adjusted, but a plurality of types of windings have to be prepared, increasing device complexity
Solution Approach 1:
Instead of using multiple static winding configurations, the patent employs a dynamic inner iron core that can be rotated to different positions. This dynamic adjustment mechanism provides variable inductance without requiring multiple winding types, as the magnetic circuit characteristics change with the inner core position.
3Adaptability or versatility
If the magnitude of inductance is adjusted with the cross-sectional area of the iron core, then the inductance value can be adjusted, but a plurality of types of iron cores having a variety of shapes and lamination lengths have to be prepared, increasing device complexity
Solution Approach 1:
The patent uses a rotatable inner iron core with a specific shape (having a maximum radius greater than half the inner diameter of the outer iron core) that can be positioned at different radial distances from the center. This dynamic positioning effectively changes the magnetic path characteristics and inductance without requiring multiple iron core types with different shapes and lamination lengths.
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 flexible adjustment of inductance without replacing components, reducing complexity and costs by utilizing a single set of components with rotatable inner core configurations.
Implementation Method 1
The provision of the gap adjusts the amounts of magnetic fluxes Φ2 to Φ4, and hence makes an adjustment to an inductance value
Data Source
AI summary
A multi-phase iron-core reactor has an iron core and windings. The iron core includes an outer iron core and an inner iron core. The outer iron core has teeth on which the N-phase windings are wound. The inner iron core faces the teeth through gaps, and has a shape so as to be able to provide at least two gap sizes in a selective manner.