Magnetostrictive Generator Layout for Uniform Magnetic Field Bias
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing inverse magnetostrictive power generation methods struggle to generate significant power due to insufficient and non-uniform magnetic fields applied to magnetostrictive materials.
Innovation Solution
A power generation element is designed with a magnetostrictive material having a fixed end, incorporating a magnetic circuit that includes a magnetostrictive portion, a magnetic portion, a coil, and magnetic field generation portions. The magnetic field generation portions are configured to generate a stronger magnetic field near the fixed end, ensuring a uniform magnetic field distribution within the magnetostrictive material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If existing inverse magnetostrictive power generation methods are used, then the structure is simple, but the power generation amount is insufficient due to non-uniform magnetic field distribution
Solution Approach 1:
The magnetic field generation portion is divided into multiple sections along the longitudinal direction of the magnetostrictive material. Each section can be independently configured to generate magnetic fields of appropriate strength, enabling uniform magnetic field distribution throughout the magnetostrictive material and thereby increasing the overall power generation amount.
Solution Approach 2:
Different regions of the magnetic field generation portion are designed with different magnetic field strengths according to the specific requirements of each local area of the magnetostrictive material. This ensures that each part of the magnetostrictive material receives the optimal magnetic field strength for maximum power generation efficiency.
2Power
If magnetic field strength is increased to improve power generation, then power generation amount increases, but magnetic field uniformity deteriorates
Solution Approach 1:
By segmenting the magnetic field generation portion into multiple sections, the total magnetic field strength can be increased while maintaining uniformity. Each section contributes to the overall power generation without creating localized magnetic field concentrations that would compromise uniformity.
Solution Approach 2:
The magnetic field generation is extended along the longitudinal dimension of the magnetostrictive material. This dimensional extension allows the magnetic field to be distributed more uniformly across the entire length of the magnetostrictive material, achieving both high power generation and field uniformity.
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 enhances the power generation amount by ensuring a uniform magnetic field distribution, thereby improving the inverse magnetostrictive effect and increasing the power generation efficiency.
Implementation Method 1
power generation using an inverse magnetostrictive phenomenon in which a magnetic flux density is changed by change in force
Implementation Method 2
a first magnetic field generation portion and a second magnetic field generation portion each of which being fixed to the magnetostrictive portion to sandwich the coil and being configured to generate a magnetic field
Implementation Method 3
a movable-magnet power generation method that vibrates a magnet by vibration in the environment to generate an induced electromotive force in a coil
Data Source
AI summary
A power generation element includes a magnetostrictive material having a fixed end in a longitudinal direction, and generates power when force is applied to the magnetostrictive material. The power generation element includes a magnetostrictive portion containing the magnetostrictive material, a magnetic portion containing a magnetic material and having surfaces at least partially fixed to the magnetostrictive portion, a coil for enclosing at least a part of the magnetostrictive material, and a first and second magnetic field generation portions to generate a magnetic field that are fixed to the magnetostrictive portion to sandwich the coil, all of which configuring a magnetic circuit. Out of the first and the second magnetic field generation portions, the magnetic field generated from the first magnetic field generation portion close to the fixed end is larger than that generated from the second magnetic field generation portion.