Indirect Current Source Inverter with Regenerative Snubber Circuit

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: 8Language: englishTyp: PDF

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Austermann, Johann; Studen, Christian; Borcherding, Holger (Ostwestfalen-Lippe UAS, Germany)
Boecker, Joachim (University of Paderborn, Germany)

This paper introduces a high efficient circuit (η ˜ 98,1%) for feeding back regenerative power from frequency inverters into the grid. The circuit essentially consists of a synchronous rectifier and a buck converter with an additional regenerative snubber circuit. Due to the regenerative snubber circuit a high switching frequency can be achieved without the disadvantage of high switching losses. The circuit can be connected between the DC link and the mains to control the regenerative power. As a major advantage compared to active front end converters the uncontrolled rectifier of the frequency inverter can be preserved.