Progress in performance of high voltage aluminum electrolytic capacitors

Conference: PCIM Europe 2014 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/20/2014 - 05/22/2014 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2014

Pages: 5Language: englishTyp: PDF

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Andoralov, Victor; Larsson, Christer; Eliasson, Leif (KEMET Electronics AB, Sweden)

Development results of high performance aluminum electrolytic capacitors for up to 250 V applications are discussed in the article. Complex improvements to the key parameters allow the achievement of enhanced characteristics for the capacitors in conjunction with relatively low cost. Life time of at least 3500 hrs. at 125 oC, low ESR and maximum drift of 10% for the main characteristics (ESR, tan(δ) and C) during the life time result from using the electrolyte. Special design techniques give the capability of extremely high ripple current of around 14 A at 105 oC for a 150 ??F, 200 V, Ø20xL35 mm, heat-sink mounted capacitor.