Study on self-healing and lifetime characteristics of metallized film capacitor under high electric field

@article{Chen2011StudyOS,
  title={Study on self-healing and lifetime characteristics of metallized film capacitor under high electric field},
  author={Yaohong Chen and Fuchang Lin and Hua Li and Fei Lv and Miao Zhang and Zhiwei Li},
  journal={2011 IEEE Pulsed Power Conference},
  year={2011},
  pages={711-716}
}
High energy density capacitor is a key device in power supply source in Electromagnetic Gun (EMG) system. In order to increase the reliability of the power source equipment, the lifetime of capacitors must be lengthened. The increasing of the capacitor's lifetime is mainly beneficial from its self-healing capability. Nevertheless the self-healing is the main reason for the capacitance loss of metallized film capacitors, and it might finally lead to the failure of a capacitor. 

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References

SHOWING 1-10 OF 19 REFERENCES

Study on Metallized Film Capacitor and its Voltage Maintaining Performance

High energy density capacitor is a key device in power supply source in electromagnetic gun (EMG) system. The increase of energy density of capacitor is beneficial from emerge of metallized

On the failure mechanism of metallized polypropylene pulse capacitors

Metallized pulse capacitors has gained wider and wider usage because of their unique "self-healing" character. Their failure mechanism has many differences from film/foil capacitors. Experiments were

Diagnostic of the self-healing of metallized polypropylene film by modeling of the broadening emission lines of aluminum emitted by plasma discharge

Metallized-film capacitors have the property, even under high continuous voltage, to self-heal i.e., to clear a defect in the dielectric. The self-healing process is a consequence of a transient arc

Electric field and equivalent circuit in all-film capacitors

This work shows that the electric field enhancement of the plate edges in all-film capacitors has only a very small effect on the current value through the capacitor although this enhancement could

Calculation and measurement of metalized film capacitor's inner pressure and its influence on self-healing characteristics

Self-healing is the main cause to capacitance loss of metalized film capacitors, and it might finally lead to the failure of a capacitor. Teardown analysis shown that capacitance loss decreased

Research on electrode-end contact degradation of metallized polypropylene capacitors

The disconnection of "sprayed ends" from the electrode edges is one of the most frequent reasons for the failures of metallized film capacitors, especially in pulsed power applications. The sprayed

Calculation of Electric Field in Safety Film Capacitors

The failure mechanism of a safety film capacitor is a little different from that of an all-film capacitor. Experiments were carried out on a number of safety film pulse capacitors. A careful

High energy density capacitors

Metallized film capacitors with energy densities as high as 3 J/cc and stored energy as high as 260 kJ per unit are now commercially available. These capacitors can be custom-designed for specific