研究目的
Investigating the suppression of bearing current in motors using the field emission characteristics of carbon nanotubes.
研究成果
The study found that when the distance between the anode and cathode is 41.65 μm, the field emission turn-on voltage is lower, and the emission effect is better. The research provides important reference value for solving the bearing current problem in motors using carbon nanotubes.
研究不足
The experiments were carried out in the air, not in vacuum conditions, which may affect the field emission results. Additionally, the distance between the emitter tip and the anode plate being too short can lead to the burning of the carbon fiber tip.
1：Experimental Design and Method Selection:
The study involves software simulation to analyze the influence of the distance between emitter tips and the anode metal plate on electric field intensity, followed by field emission experiments under non-vacuum conditions using TNF300 type carbon nanotube fibers.
2：Sample Selection and Data Sources:
TNF300 type carbon nanotube fibers with a diameter of about 66 μm were used as cathode emission material.
3：List of Experimental Equipment and Materials:
The experimental platform includes observation platform, detection platform, MPC-200 micro manipulator, and dual channel system digital source tables.
4：Experimental Procedures and Operational Workflow:
The distance between the anode material and carbon nanotube fibers was adjusted using a micro-manipulator, and the field emission current curves at different distances were measured.
5：Data Analysis Methods:
The experimental data of voltage and current were processed in Excel, and the field emission F-N curve was obtained by remapping in MATLAB.
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