Converters with reduced switch counts usually face some performance tradeoffs, which make them suitable for some applications but not others. The same applies to the nine-switch converter, which is a reduced-switch version of the back-to-back twelve-switch converter. The nine-switch converter has since been shown to experience a higher voltage stress, which can be lowered in some cases. A corresponding evaluation of its current stress is however lacking, and is hence addressed now by computing its switch currents when used for ac-ac, ac-dc, dc-ac and dc-dc energy conversions. Relevant expressions, application requirements and simulation results are presented for identifying cases, where the nine-switch converter can have an improvement in performance despite its reduced switch count.
Proceedings of the Annual Conference of the Ieee Industrial Electronics Society, 2013, p. 755-760
Nine-switch converter; Twelve-switch converter; Back-to-back converter; Energy conversion systems
39th Annual Conference of the IEEE Industrial Electronics Society, 2013