New Concepts of Capacitor Designs in Power Electronics

Conference: PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/16/2017 - 05/18/2017 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2017

Pages: 5Language: englishTyp: PDF

Personal VDE Members are entitled to a 10% discount on this title

Authors:
Ebel, Thomas (FTCAP GmbH, Germany)

Abstract:
A clear trend in power electronics is to increase the power density of the passive components like Aluminium electrolytic capacitors and metallized film capacitors. That means to increase the ripple load current of given capacitors, further to increase lifetime of the component and/or to operate the components at higher switching frequencies. FTCAP has developed new concepts for those applications. Cuboid axial capacitors with entire laser welded Al-metal housing are one candidate to increase significant the ripple current load, having a 27% bigger surface and allowing a better heat sink connection and a significant life time enhancement. Whereas the patented Fischer-Link concept of metallized film capacitors reduces the parasitic inductances to the half compared to standard capacitors, allowing low loss operation of an assembled capacitor bank at higher switching frequencies.