Development of A Resonant Excitation Coil of AC Magnetometer for Evaluation of Magnetic Fluid

Authors

  • Mohd Mawardi Saari Faculty of Electrical & Electronic Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • Nazatul Sharreena Suhaimi Faculty of Electrical & Electronic Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • Saifudin Razali Faculty of Electrical & Electronic Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • Nurul Akmal Che Lah Innovative Manufacturing, Mechatronics and Sports Lab (iMAMS), Faculty of Manufacturing Engineering, Universiti Malaysia Pahang, 26600 Pekan, Pahang, Malaysia
  • Kenji Sakai Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima Naka, 700-8350 Okayama, Japan
  • Toshihiko Kiwa Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima Naka, 700-8350 Okayama, Japan
  • Keiji Tsukada Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima Naka, 700-8350 Okayama, Japan

Keywords:

Coil, Impedance, Magnetometer, Resonant Circuit,

Abstract

A high-homogeneity excitation coil with a resonant circuit for AC magnetometer is developed. A solenoid coil is designed to produce a high-homogeneity and strong excitation field using a resonant frequency method. The solenoid coil is fabricated with a Litz wire to suppress the increase of AC resistance due to the skin and proximity effects in the highfrequency region. The Litz wire is composed of 60 strands of copper wires with 0.1-mm diameter. The resonant frequency method is applied to cancel the reactance component by connecting the excitation coil with a capacitor in a series configuration. To enable excitation of the magnetic field at multiple frequencies, a resonant circuit consists of multiple values of resonant capacitors is constructed. The fabricated excitation coil showed a high homogeneity of the magnetic field and was able to maintain a constant resonant current up to 32.5 kHz.

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Published

2018-01-18

How to Cite

Saari, M. M., Suhaimi, N. S., Razali, S., Che Lah, N. A., Sakai, K., Kiwa, T., & Tsukada, K. (2018). Development of A Resonant Excitation Coil of AC Magnetometer for Evaluation of Magnetic Fluid. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 10(1-2), 127–130. Retrieved from https://jtec.utem.edu.my/jtec/article/view/3339