Metallized polypropylene film capacitors (MPPFCs) offer numerous advantages, including low dielectric loss, high power density, long cycling life, rapid charge–discharge capabilities, and excellent temperature stability. These attributes make MPPFCs the preferred choice for high-voltage, high-capacity power electronic systems [1, 2].
Film capacitors are versatile components that can be designed into power electronics for industries ranging from consumer and renewables to automotive, aerospace and military. These capacitors come with very specific advantages including non-polarity, a high insulation resistance, low dielectric losses and self-healing capability.
These capacitors come with very specific advantages including non-polarity, a high insulation resistance, low dielectric losses and self-healing capability. Film capacitors can be optimized through diferent materials and manufacturing methods.
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).
After successful self-healing, the metallized film capacitor can continue to work, so this type of capacitor has high reliability (Sarjeant et al., 1998). Although metallized capacitors rarely fail, once a metallized film capacitor has an accident, the impact on the application system cannot be ignored.
Film capacitors can be optimized through diferent materials and manufacturing methods. Capacitors are all unique; their fundamentals, the manufacturing processes, advantages and even technology trends are worth highlighting. There are diferent grades and applications critical to considering before choosing the best option.