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) […]
Rectangular Lamination Permanent Magnet Transformer Core for Motor, N38EH Laminated Rare Earth Block Magnets, customized permanent magnetic lamination transformer core for motors, Reducing Eddy Current Loss Neodymium Lamination Magnets, Laminated rare earth permanent magnets for eddy current loss
Rectangular Lamination Permanent Magnet Transformer Core for Motor Part No. HSLAMIM-08
Customzied Specific Requirements
Know as Lamination Magnetic Core
OEM or ODM service: Accept
Grade: 30H-48H, 30SH-45SH, 30UH-40UH, 28EH-38EH, 30AH-33AH…
Surface Treatment: Phosphate / epoxy
Tolerance: +/-0.02 – 0.05mm
Laminated Block 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.
1. The thinnest available insulating layers, <20 um;
2. Performance at temperatures up to 200˚C;
3. Magnet layers from .5 mm and up custom shapes and sizes in neodymium magnets.
Aerospace, Automotive, Motorsport, and Industrial Markets are turning to Laminated Rare Earth Square Magnets, and are working to balance the tradeoff between power and heat.
Calculation of eddy current losses with and without Lamination are shown below:
Laminated Magnets for eddy current reduction.
Rotor Eddy-Current Loss in Permanent Magnet Brushless Motor
the influence of the number of magnet segments per pole on the eddy-current loss of the modular and conventional machines, respectively, when both are supplied with sinusoidal phase current wave forms. Since the analytical prediction does not account for the effect of the stator slot openings, its results can only be compared directly with those from FE calculations with the magnets unmagnetized. Conversely, the FE results under a no-load (or open-circuit) condition represent the eddy-current loss due only to the slot openings. As will be seen for both machines, circumferential segmentation of the magnets is effective in reducing the eddy-current loss. It can also be seen that there is good agreement between results from the analytical model and FE predictions of the eddy-current loss associated with the stator mmf space harmonics. However, it will be noted that while for the modular machine the component of eddy-cur-rent loss which is associated with the variation of the magnet working point due to stator slotting is relatively small, it is significant for the conventional machine. It should also be noted that due to the influence of skin effect and saturation, which are neglected in the analytical model, the total eddy-current loss at rated load does not equal the sum of the losses calculated separately on no-load and with the magnets unmagnetized. PM Motor Laminated Rare Earth Magnets
the variation of the eddy-current loss in the permanent magnets of the conventional machine with the slot opening angle. It can be seen that the slot opening has a significant effect on the loss component associated with the variation of the permanent magnet working point due to slotting. Since the frequency of the variation is proportional to the number of slots, the eddy-current loss due to slotting in the conventional machine is more significant than that in the modular machine.Therefore, in addition to the influence of the width of the slot openings on the cogging torque and synchronous inductance, its effects on the eddy-current loss in the permanent magnets may have to be considered during the design stage.
HSMAG permanent type custom laminated rare earth magnets are made to your specification and project requirement.