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Investigation of electrical and magnetic properties of ferro-nanofluid on transformers.

Tsai TH, Chen PH, Lee DS, Yang CT - Nanoscale Res Lett (2011)

Bottom Line: The ferro-nanofluid was fabricated by a chemical co-precipitation method.The experimental results indicated that the inductance and coupling coefficient of coils grew with the increment of the ferro-nanofluid concentration.The presence of ferro-nanofluid increased resistance, yielding to the decrement of the quality factor, owing to the phase lag between the external magnetic field and the magnetization of the material.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Mechanical Engineering, National Taiwan University, No, 1, Sec, 4, Roosevelt Rd,, Taipei 10617, Taiwan. phchen@ntu.edu.tw.

ABSTRACT
This study investigated a simple model of transformers that have liquid magnetic cores with different concentrations of ferro-nanofluids. The simple model was built on a capillary by enamel-insulated wires and with ferro-nanofluid loaded in the capillary. The ferro-nanofluid was fabricated by a chemical co-precipitation method. The performances of the transformers with either air core or ferro-nanofluid at different concentrations of nanoparticles of 0.25, 0.5, 0.75, and 1 M were measured and simulated at frequencies ranging from 100 kHz to 100 MHz. The experimental results indicated that the inductance and coupling coefficient of coils grew with the increment of the ferro-nanofluid concentration. The presence of ferro-nanofluid increased resistance, yielding to the decrement of the quality factor, owing to the phase lag between the external magnetic field and the magnetization of the material.

No MeSH data available.


The transformer on a capillary that loads the oil-based Fe3O4 nanofluid.
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Figure 4: The transformer on a capillary that loads the oil-based Fe3O4 nanofluid.

Mentions: A liquid magnetic core of a transformer was used in this study; the capillary served as a container in which the Fe3O4 nanofluid was loaded. The coils of the transformer were made by winding enamel-insulated wires on a capillary. Figure 4 shows the transformer on a capillary, which loads the oil-based Fe3O4 nanofluid. The diameter of the enamel-insulated wire used was 0.45 mm, and the thickness of the enamel layer was approximately 0.05 mm. The primary and secondary windings had 20 turns. The outer and inner diameters of the capillary were 3.2 and 2.3 mm, respectively, and the capacity of the capillary was 100 μL.


Investigation of electrical and magnetic properties of ferro-nanofluid on transformers.

Tsai TH, Chen PH, Lee DS, Yang CT - Nanoscale Res Lett (2011)

The transformer on a capillary that loads the oil-based Fe3O4 nanofluid.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3211327&req=5

Figure 4: The transformer on a capillary that loads the oil-based Fe3O4 nanofluid.
Mentions: A liquid magnetic core of a transformer was used in this study; the capillary served as a container in which the Fe3O4 nanofluid was loaded. The coils of the transformer were made by winding enamel-insulated wires on a capillary. Figure 4 shows the transformer on a capillary, which loads the oil-based Fe3O4 nanofluid. The diameter of the enamel-insulated wire used was 0.45 mm, and the thickness of the enamel layer was approximately 0.05 mm. The primary and secondary windings had 20 turns. The outer and inner diameters of the capillary were 3.2 and 2.3 mm, respectively, and the capacity of the capillary was 100 μL.

Bottom Line: The ferro-nanofluid was fabricated by a chemical co-precipitation method.The experimental results indicated that the inductance and coupling coefficient of coils grew with the increment of the ferro-nanofluid concentration.The presence of ferro-nanofluid increased resistance, yielding to the decrement of the quality factor, owing to the phase lag between the external magnetic field and the magnetization of the material.

View Article: PubMed Central - HTML - PubMed

Affiliation: Department of Mechanical Engineering, National Taiwan University, No, 1, Sec, 4, Roosevelt Rd,, Taipei 10617, Taiwan. phchen@ntu.edu.tw.

ABSTRACT
This study investigated a simple model of transformers that have liquid magnetic cores with different concentrations of ferro-nanofluids. The simple model was built on a capillary by enamel-insulated wires and with ferro-nanofluid loaded in the capillary. The ferro-nanofluid was fabricated by a chemical co-precipitation method. The performances of the transformers with either air core or ferro-nanofluid at different concentrations of nanoparticles of 0.25, 0.5, 0.75, and 1 M were measured and simulated at frequencies ranging from 100 kHz to 100 MHz. The experimental results indicated that the inductance and coupling coefficient of coils grew with the increment of the ferro-nanofluid concentration. The presence of ferro-nanofluid increased resistance, yielding to the decrement of the quality factor, owing to the phase lag between the external magnetic field and the magnetization of the material.

No MeSH data available.