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Laminated Magnet
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Laminated Magnet Assembly are made by cutting the whole magnet into many small magnets and then gluing them together. When the permanent magnet motor is running, it will produce harmonic and the magnet generate skin effect. These cause the eddy current loss, and then the temperature of the magnets rise up, which result in the irreversible demagnetization and the influence on safety and stability motor.The laminated magnets are proven to reduce eddy current loss in high-efficiency motors. Less eddy current lose means less heat and less waste. It improves the motor performance.
It is now widely used in the drive motors of new energy vehicles, which greatly improves the endurance and longevity of new energy vehicles.
TECHNICAL REQUIREMENT
The thickness of insulating layers is within 0.04mm.
The bond strength of insulating layers can reach more than 50MPa.
The whole geometric tolerance is within 0.05mm.
These small magnets are insulated from each other.
The maximum working temperature can reach 200℃.
FEATURES
Reducing electromagnetic eddy current.
Remaining the same magnetic properties with the whole magnet or even superior.
THE EDDY CURRENT SIMULATION EXPERIMENT OF DIFFERENT PIECEMEAL PERMANENT MAGNETS
Experiment: N35UH Magnet, Dimension:20*160*5mm.
Magnets are tested at different excitation frequencies in a non-piecewise and piecewise manner.
Eddy current simulation of different piecemeal permanent magnets
Trend of Eddy Current Loss
TESTING RESULTS
The eddy current loss of magnet decreases with the increase of magnet segments.
The eddy current loss of magnet increases with the Excitation frequency.
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The company operates in the production and sales of magnetic materials, with main products including neodymium iron boron magnets and neodymium iron boron magnet components.
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