Multipolar Isotropic Ferrite Ring Permanent Magnet, Ceramic Multi-pole Magnets, motor rotor permanent ring magnets, Radially Orientation Multi-polar Magnetic Ring, Anisotropic hard ferrite magnetic rings for electronic motors Multipolar Isotropic Ferrite Ring Permanent Magnet Features: Specification size: custom design drawing Magnetizing mode: Radial 6 poles Type: Permanent Magnet Tolerance: +0.1mm Composition: Sintered Ferrite Magnet (hard ceramic) […]
Higher Strength Precision Superior Bonding Whole Laminated Magnet, Rectangle Laminated Magnets for Synchronous BLDC Motor, eddy current simulation Lamination Magnet, NdFeB magnets for Industrial electric motors, Compact & Customized Motor Permanent Magnets Solution
Higher Strength Precision Superior Bonding Whole Laminated Magnet Part No. HSLAMIM-30 – Laminated magnet is to cut the whole magnet into many small pieces of magnet, and then use specific glue to bond together. These small magnets are insulated from each other and enable to cut down electromagnetic eddy current.
When the permanent magnet motor is running, the motor will generate harmonic and the magnets themselves will generated skin effect, these all will bring a lot of eddy current loss, and then the temperature of permanent magnet rises, which results in irreversible demagnetization and affects the safety and stability of motor operation. So, the design of laminated magnet assembly is able to cut down risk and loss, however to improve the efficiency of motor.
The eddy current simulation experiment of different piecemeal permanent magnets
Experiment: NdFeB N35UH magnet, dimensions: 20*160*5MM
Magnets are tested at different excitation frequencies in a non-piecewise and piecewise manner .
Testing results :
The eddy current loss of magnet decreases with the increase of magnet segments
1.The thickness of insulating layers is within 0.04mm.
2. In normal temperature, the bond strength of insulating layers can reach more than 50Mpa.
3. The maximum working temperature can reach 200 ℃.
4. The whole geometric tolerance is within 0.05mm.
5. These small magnets are insulated from each other.
We have developed new technologies to produce stator magnet segments.
Based on our technologies, we are offering a complete service and the know-how required to transform the full stator into a segmented version for large series production (see Engineering). Segments with bonding varnish unveil many benefits:
Better magnetic properties
Very high stiffness
No cushioning, less vibrations and therefore less noise
Higher iron filling factor and higher copper filling achievable
Now aerospace, automotive, motorsport, and industrial markets are turning to laminated rare earth magnets, and are working to balance the tradeoff between power and heat. Rectangle Laminated Magnets for Synchronous BLDC Motor
Reducing electromagnetic eddy current
Remaining the same magnetic properties with the whole magnet or ever superior
Many benefits based on bonding varnish stator magnet segments:
Higher winding density
Isotropic magnetic properties
Mechanical interconnection designed to the requirements
Sheet thickness from as thin as NO10
Simpler and more affordable stamping tools
Large material savings compared to one piece stator
Easy to insulate and wind automatically
Short delivery time from 8 weeks for samples
Steady production ramp-up according to ramp-up plan