Capacitors: revisiting a classical technology to face new challlenges
Résumé
Capacitors used in power electronics for automotive are of two main kinds : metallized film and electrolytic. Their strengths and weaknesses are analysed, in particular relating to electromagnetic compatibility, reliability, thermal properties. Some innovative designs are proposed and discussed. They concern modifications in the shape of capacitors, alternate placement of connections, integration of passive components, use of “smart” electrolytic capacitors which include monitoring circuitry