Autonomous method of maximum power efficiency tracking for PFC- and DC/DC-converter system
Conference: PCIM Europe 2015 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/19/2015 - 05/20/2015 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2015
Pages: 4Language: englishTyp: PDF
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Authors:
Strzalkowski, Bernhard (Analog Devices, Wilhelm-Wagenfeld-Str.6, 80807 Munich, Germany)
Abstract:
Maintaining high power efficiency across entire load range for an off-line supply system consisting of PFC- and DC/DC converter is a challenge. This is because the power efficiency behaviours of PFC- and DC/DC converters are non-linear functions of their output load level. Intelligent adjustment of intermediate bus voltage level (IBV) can help increasing power efficiency of both PFC- and DC/DC converters for entire load range. This paper shows a smart system consisting of an AC/DC PFC- and DC/DC converter providing 230Vac to 12Vdc conversion with power efficiency autonomous self-tuning algorithm. The key approaches for optimum efficiency is dynamically optimization of intermediate bus voltage.