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

  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},
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. 

Lifetime evaluation of high energy density capacitor based experimental investig ations

  • Zhiwei LiHua Li Qin Zhang
  • Materials Science
    2013 Abstracts IEEE International Conference on Plasma Science (ICOPS)
  • 2013
High energy density (HED) capacitor made of metallized polypropylene film possesses characteristics of high reliability and is widely used in the pulsed power system. Self-healings in HEDC result in

Detection of Self-Healing Discharge in Metallized Film Capacitors Using an Ultrasonic Method

Benefiting from self-healing features, metallized film capacitors (MFCs) are widely employed to compensate reactive power (VAR) and thus improve the performance of AC systems. To ensure the

Lifetime Improvement of Metallized Film Capacitors by Inner Pressure Strengthening

Metallized polypropylene film capacitors (MPPFCs) are widely used in pulse power systems for their characteristics of high reliabilities, high energy densities, and excellent pulse power handling

Lifetime estimation of high-temperature high-voltage polymer film capacitor based on capacitance loss

Self-healing in segmented metallized film capacitors: Experimental and theoretical investigations for engineering design

A significant increase in the efficiency of modern metallized film capacitors has been achieved by the application of special segmented nanometer-thick electrodes. The proper design of the electrode

DC Voltage Endurance of Capacitor BOPP Films at High Temperature

A large-area method for determining the voltage endurance of capacitor films is presented. The method was used to characterize the high field - high temperature performance of a commercial biaxially

Effect of inter-layer pressure on dielectric breakdown characteristics of metallized polymer films for capacitor applications

Relatively high level of inter-layer pressure is often promoted for wound metallized film capacitors as it has been found to reduce the capacitance loss during self-healing breakdown. However, the

Recovery of Alumina Nanocapacitors after High Voltage Breakdown

It is demonstrated that the insulating properties of atomic-layer-deposited Al2O3 thin films in Al/Al 2O3/Al trilayers can recover after the breakdown, which holds promise for a new generation of capacitors capable of restoring their properties after the dielectric breakdown.



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