Sage Journals: Discover world-class research

Abstract

In view of the bearing current of motor, a method of suppressing the bearing current using the field emission characteristics of carbon nanotubes is proposed. Firstly, the advantages of carbon nano-materials and their field emission properties are introduced. Secondly, the influence of the distance between the emitter tips and the anode metal plate on the electric field intensity is analyzed by software simulation. Finally, field emission experiments of TNF300 type carbon nanotube fibers under non vacuum conditions were carried out by means of probes, microscopes and other experimental equipment. After obtaining the voltage and current of carbon nano-materials at different distances, the volt-ampere characteristic curves and the field emission characteristic curve were drawn, and the experimental results from different distances were compared and analyzed.

Keywords

Field emission carbon nanotubes bearing current suppression simulation and experiment

Get full access to this article

View all access options for this article.

References

Jouanne

A.V.

Zhang

and Wallace

A.K.

, An evaluation of mitigation techniques for bearing currents, EMI and overvoltages in ASD applications, IEEE Transactions on Industry Applications 34(5) (1998), 1113–1122.

Steinke

J.K.

, Use of an LC filter to achieve a motor-friendly performance of the PWM voltage source inverter, IEEE Transactions on Energy Conversion 14(3) (2002), 649–654.

Macdonald

and Gray

, PWM drive related bearing failures, IEEE Industry Applications Magazine 5(4) (1999), 41–47.

Bai

Liu

Wang

and Zhang

, Research on shaft voltage and bearing current of induction motor driven by PWM inverter, Transactions of China Electrotechnical Society 28 (2013), 434–440.

Wang

, Key problems of high frequency bearing currents in variable frequency induction motor fed by PWM inverter. Diss. Shenyang University of Technology, 2015.

Iijima

, Helical microtubes of graphite carbon, Nature 354(6348) (1991), 56–58.

Fowler

R.H.

and Nordheim

, Electron emission in intense electric fields, Proceedings of the Royal Society of London 119(781) (1928), 173–181.

Liu

and Li

, Modeling for contact resistance between metallic carbon nanotubes and semiconducting substrates of field emission devices, in: Electron Devices and Solid-State Circuits, IEEE, 2013, pp. 1–2.

Zhang

Z.X.

Hou

S.M.

Zhao

X.Y.

Zhang

Sun

J.P.

Liu

W.M.

, A study on field emission patterns of single-walled carbon nanotubes, Acta Physica Sinica 51(2) (2002), 434–438.

10.

Xin

, Field evaporation of the end of a carbon nanotube, Acta Physica Sinica 57(7) (2008), 4596–4601.

11.

Choi

Y.S.

, Shapes of emitter surface in field emission display, Thin Solid Films 516(10) (2008), 3357–3363.

12.

Han

J.S.

Yun

K.N.

Sang

H.L.

Field emission properties of triode structure CNT film emitter, in: Vacuum Nanoelectronics Conference, IEEE, 2017, pp. 164–165.

Simulation and experiment of field emission based on carbon nanotubes

Abstract

Keywords

Get full access to this article

References