The self-healing capacitors uses a single-layer polypropylene film as the medium, and a thin layer of metal is vapor-deposited on the surface as a conductive electrode. When an excessively high voltage is applied, the electrical weakness of the polypropylene film is broken down, the resistance of the breakdown point is significantly reduced, and the current density flowing through increases sharply, causing the metallized coating to generate high heat, and the metal conductor around the breakdown point quickly evaporates and escapes. Disperse, forming a blank area of metal plating, and the breakdown point automatically restores insulation.
Reasons for the popularity of self-healing capacitors
- The practicality of self-healing capacitors
Compared with traditional power capacitors, self-healing capacitor have self-healing capabilities. When a traditional power capacitor has an electrical breakdown, the capacitor may leak oil, catch fire, etc.; in the worst case, the capacitor may explode. Although self-healing capacitor cannot completely solve these problems, they can reduce the probability of problems in these areas.
- Economic benefits of self-healing capacitor
① When we use traditional capacitor, if electrical breakdown occurs, it may cause oil leakage, oil leakage, explosion and other phenomena in the power capacitor. Enterprises need to replace power capacitor, which will incur expensive replacement costs.
②When we use self-healing capacitor, the power capacitor will experience electrical breakdown, and the power capacitor will automatically recover, reducing the occurrence of oil seepage, oil leakage, explosion and other phenomena. Therefore, the use of self-healing capacitors will help companies save investment.