Three phase power factor correction front-end for variable frequency networks

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Three phase power factor correction front-end for variable frequency networks

Groke, Holger / Christ, Timo / Orlik, Bernd / Raffel, Holger / Thal, Christian / Tenhagen, Andre

In modern aircraft, the electrical generators are directly coupled to the turbines, hence driven by a varying rotational speed. The voltage is varying between 90 VRMS and 130 VRMS at frequencies between 360 Hz and 800 Hz. In order to realize a power factor corrected front end for various loads, a digitally controlled three phase power factor correction unit was designed, which achieves a constant DC-link voltage of 400 V and is targeted for loads up to 2 kVA, but designed for a maximum load of 100 kVA by changing a few power devices. The paper presents an innovative approach and scalable architecture for a digitally controlled three phase PFC stage when input voltage amplitude and frequency are varying, as specified for a modern aircraft system. The outlined system is a cost-, weight- and size efficient way to fulfil the specified constraints and serves as front end for multi purpose loads up to 2 kVA - like DC/DC converters, uninterruptible power supplies or inverters - by generating a constant DC link voltage of 400 V. Together with a DC/DC converter and an Output converter the presented PFC-Front-End can be used to generate a constant three phase voltage output of 115 VRMS at a fixed frequency of 400 Hz like in former standards for fixed frequency networks for aircrafts.

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Document information

Title :

Three phase power factor correction front-end for variable frequency networks

Additional title:

Korrektur des dreiphasigen Leistungsfaktors in Netzwerken mit variabler Frequenz

Contributors:

Groke, Holger (author) / Christ, Timo (author) / Orlik, Bernd (author) / Raffel, Holger (author) / Thal, Christian (author) / Tenhagen, Andre (author)

Published in:

PCIM Europe, International Exhibition & Conference for Power Electronics, Intelligent Motion, Power Quality, 2008 ; 1-5

Publication date :

2008

Size :

5 Seiten, 15 Bilder, 5 Quellen

Remarks:

(ohne Paginierung)

ISBN :

978-3-89838-605-0

Type of media :

Conference paper