Open AccessThree‐phase buck–boost PFC rectifier with common‐mode free output voltage and low semiconductor blocking voltage stress
Author(s) -
Miniböck Johann,
Mauerer Mario,
Huber Jonas E.,
Kolar Johann W.
Publication year - 2019
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2018.5850
Subject(s) - power factor , rectifier (neural networks) , mains electricity , total harmonic distortion , voltage , three phase , control theory (sociology) , topology (electrical circuits) , switched mode power supply , electrical engineering , electronic engineering , computer science , engineering , stochastic neural network , control (management) , machine learning , artificial intelligence , recurrent neural network , artificial neural network
Three‐phase buck–boost power‐factor correction (PFC) rectifiers are characterised by a unity power‐factor mains behaviour and/or sinusoidal input currents and are providing a wide‐output voltage range. In this study, an extension of a state‐of‐the‐art three‐phase buck–boost PFC rectifier topology is proposed. The DC output of the new topology does not suffer from a high‐frequency common‐mode voltage with respect to the (grounded) mains star point, which alleviates electromagnetic interference concerns. Also, the blocking voltage requirements of the AC‐side switches are reduced significantly (almost by a factor of two for a 400 V line‐to‐line mains and a 400 V DC output), which facilitates a broad selection of cost‐effective power semiconductors for the system's realisation. The rectifier can be controlled with a simple feedback system and the concept is especially suitable for low‐power applications. A 1 kW hardware demonstrator is employed to verify the results of theoretical considerations. The system seamlessly operates in the buck and boost regime and achieves conversion efficiencies of 95.3% and mains current total harmonic distortion figures in the range of 1–5%.