Nanocrystalline Power Transformer Cores
Nanocrystalline power transformer core is made by transverse magnetic-heat treatment to reduce core loss and residual magnetic induction, so as to obtain large working magnetic induction △B. This kind of core is suitable for push-pull type (full-bridge, half-bridge) converters.
Characteristics
High initial permeability: Larger insert loss, better inhibiting effect on conducted interference than ferrite.
High saturation induction: about 2-3 times higher than ferrite, hardly magnetized to saturate in the cases of current strong interference.
Excellent temperature stability: higher Curie temperature, the changes in alloy performance obviously lower than ferrite under the circumstance of larger temperature fluctuations, showing excellent temperature stability
Flexible frequency characteristic: More flexible to obtain the required frequency characteristic through adjustment process.
Physical Properties
| Saturation Magnetization(Bs) | 1.25T | Saturation Magnetostrictive Coefficient(λs) | <2×10-6 |
|---|---|---|---|
| Curie Temperature(Tc) | 560℃ | Density(d) | 7.3g/cm3 |
| Crystallization Temperature(Tx) | 510℃ | Resistivity(ρ) | 130μΩ-cm |
| Hardness(Hv) | 800 | Continuous Operating Temperature Range | -55~130℃ |
Magnetic Properties
| Annealing Method | Non-magnetic Annealing |
|---|---|
| Initial Permeability | >150,000 |
| Maximum Permeability | >600,000 |
| Residual Magnetic Flux Density | 0.6T |
| Coercivity | <0.8A/m |
| Iron Loss P(20kHz,0.5T) | <25W/kg |
| Iron Loss P(100kHz,0.3T) | <150W/kg |
| Iron Loss Change Rate (-55℃~125℃) | <15% |
Applications
Frequency converter
Inverter welding machine power supply
Telecom power system
High frequency induction heating power supply
UPS
Laser power supply
Electrolytic plating power supply
High-power switching power supply
Performance Curves
Core Dimension
OD-Outside Diameter ; ID-Inside Diameter ; HT- Height
Specification
Cores with other specifications can be provided concerning to customer demand.
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