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小功率高频变压器铁芯
纳米晶材料同时具备硅钢、坡莫合金和铁氧体的优点，高频逆变电源的工作频率在20kHz~50kHz, 作为电源心脏的主变压器，传统的铁芯材料铁氧体虽高频损耗较低，但其100kHz 以下频段的磁导率较低，且 其饱和磁感应值 (Bs) 较低，铁芯的体积和重量仍较大，此外，铁氧体的居里温度较低，热稳定性差，温 度稍高即导致Bs 值降低，易饱和，工作状态不稳定，不适合于高频大功率下使用。纳米晶材料，具有优良 的综合磁性能，特别是应用在高频大功率逆变电源上铁芯的首选。纳米晶铁芯不仅用于逆变焊机电源，而 且广泛用于电解电镀设备、感应加热设备、充电设备、通信电源、 UPS 电源、X 光机电源、激光电源、变频 调速电源等领域。
Nanocrystalline materials 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 materials have excellent comprehensive magnetic properties,especially applicable in high-power and high-frequency inverter power core.Nanocrystalline core not only used in inverter welding machine power source, but also widely used in electrolytic plating equipment,induction heating equipment,charging equipment,communication power supply,UPS power supply,X-ray source,laser power supply,frequency conversion power supply,etc.
一高饱和磁感应强度-有效缩小变压器体积
High saturate induction—reduce volume of transformers
一高导磁率低矫顽力-提高变压器效率、减小激磁功率、降低铜损
High permeability and low coercivity—improve efficiency,lower exciting power and reduce copper loss
—低损耗-降低变压器的温升
Low core loss—reduce temperature rise of transformers
一优良的温度稳定性-可在-55~130℃长期工作
Excellent thermal stability—with the serving temperature of-55℃~130℃ for long time
三、产品应用 (Application):
·逆变焊机电源 (Inverter welding machine power source)
·电解电镀设备 (Electrolytic plating equipment)
·感应加热设备 (Induction heating equipment)
·充电设备 (Charging equipment)
·通信电源 (Communication power supply)
·UPS 电源 (UPS power supply)
·X 光机电源 (X-ray source)
·激光电源 (Laser power supply)
·变频调速电源 (Frequency conversion power supply,etc.)
1.纳米晶与铁氧体铁芯静态磁滞回线对比
(Static Hysteresis Loop Comparison Between Nanocrystalline and Ferrite Cores)
(Core Loss Comparison Between Nanocrystalline and Ferrite Cores)
3.不同带厚铁芯损耗对比
(Core Loss Comparison of Nanocrystalline Cores Made of Different Thickness Ribbon)
The curie temperature of nanocrystalline material is 570℃ and that of ferrite is only 200℃. The main performance of nanocrystalline cores change less than 10%at the range from -40℃ to +140℃.But the changing rate of ferrite is more than 50%.Filters made of nanocrystalline cores can be better applied to high-temperature environment and adapt to environment change.
