Why do metallized film capacitors have a high energy storage density?

The thickness of the electrode of the metallized film capacitor is thin, and the dielectric film does not need extra space for the penetration of the impregnant, so the energy storage density is high, which will help us to reduce the external size of the capacitor and reduce the cost.

What is a film capacitor?

Film capacitors belong to the non-polarized type with a capacitance range from nF to mF. They have a variety of applications such as electronic circuits, analog filter networks, resonant circuits, and high-voltage power transmission systems [2, 3].

Why is there a gap between polymer dielectric film and film capacitors?

This gap is largely due to a lack of awareness of commercial film capacitors, which hinders the further development of polymer dielectrics. This review aims to provide a comprehensive summary and understanding of both the polymer dielectric film materials and film capacitor devices, with a focus on highlighting their differences.

Can metallized polymer film capacitors improve heat-sinking capability?

In respect of improving heat-sinking capability, Lee et al. developed a numerical model to simulate the dynamics of heat generation and transfer under the switching impact of an external (Direct Current) DC voltage in metallized polymer film capacitors (Lee and Kong, 2001).

What determines the operation performance of film capacitors?

In other words, the operation performance of film capacitors is largely determined by the properties of polymer films, such as dielectric constant (ε r), dielectric loss (tan δ), breakdown strength (Eb) and electrical resistivity, glass transition temperature (Tg).

Why are polymer-based materials used in film capacitors?

Polymer-based materials have stood out from other materials and have become the main dielectrics in film capacitors because of their flexibility, cost-effectiveness, and tailorable functional properties.