NDLI: Contactless energy transmission for an isolated 100W gate driver supply of a medium voltage converter

Content Provider	IEEE Xplore Digital Library
Author	Steiner, R. Steimer, P.K. Krismer, F. Kolar, J.W.
Copyright Year	2009
Description	Author affiliation: ABB Switzerland Ltd. Power Electronics and MV Drives, Turgi, Switzerland (Steiner, R.; Steimer, P.K.) \|\| Swiss Federal Institute of Technology - ETH Power Electronics Systems Laboratory, Zürich, Switzerland (Krismer, F.; Kolar, J.W.)
Abstract	In this paper, an innovative DC-DC converter is investigated which provides electrical power to the gate driver units of medium voltage level converters. For the discussed DC-DC converter, a galvanic isolation (isolation voltages of up to 35 kV) is required. This electrical isolation is achieved with a coreless transformer in order to obtain a cost-effective solution. Furthermore, the DC-DC converter contains a full-bridge converter being operated with low switching losses, a resonant compensation network to achieve a high overall efficiency and an output side rectifier. In this paper, the design of the coreless transformer, the appropriate compensation networks and the power electronics are discussed in detail. Moreover, measurement results obtained from a 100 W prototype, operated at a switching frequency of 410 kHz, are presented. With the proposed setup, a high overall efficiency of up to 80% and a transformer breakdown voltage of 55 kVrms is achieved. Thus, the proposed converter concept represents a very competitive solution with respect to the typically employed DC-DC converters with dry-type cast coil transformers.
Starting Page	302
Ending Page	307
File Size	910602
Page Count	6
File Format	PDF
ISBN	9781424446483
ISSN	1553572X
e-ISBN	9781424446506
DOI	10.1109/IECON.2009.5414939
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-11-03
Publisher Place	Portugal
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Medium voltage DC-DC power converters Transformer cores Switching converters Contacts Galvanizing Switching loss Resonance Rectifiers Power electronics coreless power transformer GUSP gate unit power supply insulation coordination contactless energy transmission
Content Type	Text
Resource Type	Article

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