Nanocrystalline Cores For High Frequency Power Transformer

Nanocrystalline alloy cores have a combination advantages of silicon steel, permalloy and ferrite, and the working frequency of high frequency inverter power supply is 20 kHz ~ 50 kHz.

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Introduction:

Nanocrystalline alloys have a combination advantages of silicon steel, permalloy and ferrite, the working frequency of high frequency inverter power supply is 20 kHz ~ 50 kHz, as the heart of main power supply transformer, although the traditional ferrite core material loss at high frequency is low, but the permeability of below 100 kHz frequency is relatively low, and its saturation magnetic flux density value (Bs) is also low, the volume and weight of the iron core is still large. In addition, because of low Curie temperature, weak thermal stability, Bs value decreases quickly when little temperature rise, easy to saturation and working condition is not stable, ferrite is not suitable for high frequency power. Nanocrystalline alloys have excellent comprehensive magnetic properties, especially applicable in high-power and high-frequency inverter power core.

Features:

  1. High saturate induction—reduce volume of transformers.
  2. High permeability and low coercivity—improve efficiency, lower exciting power and reduce copper loss.
  3. Low core loss—reduce temperature rise of transformers.
  4. Excellent temperature stability—with the serving temperature of -55℃~130℃ for long time.

Applications:

    • Inverter welding machine
    • X-ray, laser, communication power supply
    • UPS power supply
    • Electrolytic and electroplate power supply
    • Charging power supply
    • High frequency heating systems

Specifications:

Part No. Core Dimensions Finish Dimension Le(cm) Ae(cm2) Weigth(g) Power(KW)
IDxODxH(mm) IDxODxH(mm)
SK-NAHF-254020 25x40x20 21.4×44.64×24.72 10.2 1.12 83.2 1-1.5
SK-NAHF-325020 32x50x20 28.4×53.7×24 12.87 1.35 126 1-1.5
SK-NAHF-406420 40x64x20 36.9×67.8×24.1 16.32 1.8 213 1-2
SK-NAHF-407020 40x70x20 36x75x25 17.27 2.25 281 1-2
SK-NAHF-508025 50x80x25 47.1×84.1×29.3 20.41 2.81 416 3
SK-NAHF-5010025 50x100x25 45x105x44 23.55 4.68 800 8
SK-NAHF-6010530 60x105x30 57x110x35 25.9 5.06 950 8-10
SK-NAHF-6011030 60X110x30 55x115x35 26.7 5.62 1088 8-10
SK-NAHF-6012030 60X120x30 57x125x35 28.26 6.75 1382 12-15
SK-NAHF-7012020 70x120x20 64.8×125.7×25.5 29.83 3.75 811 10
SK-NAHF-8013040 80x130x40 76x136x45 32.97 7.5 1792 15-20
SK-NAHF-8013050 80x130x50 76x136x55 32.97 9.37 2240 20-25
SK-NAHF-9013050 90x130x50 85x136x56 34.54 7.5 1878 20-25

Note: We can also customiz the dimenison of nanocrystalline cores according to custom’s requirement.

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