Details

Autor(en) / Beteiligte

• Cha, Honnyong
• Peng, Fang Zheng
• Yoo, Dong-Wook

Titel

Distributed Impedance Network (Z-Network) DC-DC Converter

Ist Teil von

• IEEE transactions on power electronics, 2010-11, Vol.25 (11), p.2722-2733

Ort / Verlag

New York, NY: IEEE

Erscheinungsjahr

2010

Quelle

IEEE/IET Electronic Library

Beschreibungen/Notizen

• This paper presents a novel dc-dc converter incorporating a distributed impedance-source network (Z-source network, or Z-network) to achieve the buck (step-down) and boost (step-up) function of a transformer-isolated dc-dc converter. In this paper, the distributed impedance source network composed of an array of inductors and capacitors is coupled between power source and main switching devices. The great and unique feature about the distributed impedance source network dc-dc converter is that unlike the traditional V-source or I-source converters, it can be open- and short-circuited without damaging switching devices. Therefore, the desired buck and boost function can be achieved. Moreover, converter reliability can be greatly improved. A dc-dc converter using this proposed concept is built and tested. Its performances are verified with experimental results.