Nickel Plated Neodymium Block Rectangular Laminated Magnet N38AH For Permanent Magnet Synchronous Motor Item No. MPCO-LAMN series
Grade N38AH, or customized
Dimensions customized
Insulating Layer <20 μm
Working Temp. <200℃
Magnet Layer ≥0.5 mm, or customized
Shape block
Size Customzied Specific Requirements
Material Neodymium Iron Boron
Coating epoxy , Un-coated
MOQ 1000 pcs
Laminated magnets can reduce eddy current Loss in high efficiency motors.
High efficiency demands the best materials, and the laminated rare earth magnets are proven to reduce eddy current losses in high efficiency motors. Fewer eddy current losses means lower heat and greater efficiency. Neodymium Iron Boron Multi-layer Lamination Block Magnets N40EH
In the surfance mounted permanent magnet synchronous motor, since the rotor rotates in synchronization with the stator, we offen ignore the eddy current loss in the rotor. In fact, stator slot effect, non-sinusoidal distribution of winding magnetic force and the harmonic magnetic potential generated by the harmonic currents in the coil winding will also cause eddy current loss in the permanent magnets of the rotor, the rotor yoke, and the metal sheath of the bundled permanent magnets.
Since the highest working temperature of sintered NdFeB magnets is 220℃(N35AH), the higher working temperature, the lower magnetic properties of NdFeB magnets, the conversion and power of motor will be reduced. This is called heat loss! These eddy current loss may cause high temperature rises, causing local demagnetization of the permanent magnets, which is particularly serious in some high-speed or high-frequency permanent magnet sychronous motors. Multi-layer Bonded Neodymium Iron Boron Laminated Magnetic Block
Demagnetization curve of sintered magnet (N35AH) at different temperature
The heat loss mainly comes from the electromagnetic eddy current in the operation of the motor. Thus, multiple stacking method( it needs insulation between each magnets) to reduce this heat loss.
Scope of application: High-speed permanent magnet motor.
Advantage: It can reduce the energy loss caused by electromagnetic eddy currents.
From this research and development project to test samples, our technical team spent more than a year on this project. We always believe that technological R&D is the core competitiveness of a company. As long as customers put forward ideas, we can provide one-stop solution service. Multi-layer Bonded Magnetic Laminated NdFeB Block Magnet for Motors
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