Zero-voltage and zero-current-switching PWM hybrid full-bridge three-level converter
Xinbo Ruan
Bin Li
Aero-Power Sci-tech Center, Nanjing Univ. of Aeronaut. & Astronaut., China;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Feb. 2005
Volume: 52,
Issue: 1
On page(s): 213- 220
ISSN: 0278-0046
INSPEC Accession Number: 8275545
Digital Object Identifier: 10.1109/TIE.2004.837911
Current Version Published: 2005-02-07
Abstract
This paper proposes a zero-voltage and zero-current-switching pulsewidth modulation hybrid full-bridge three-level (ZVZCS PWM H-FB TL) converter, which has a TL leg and a two-level leg. The voltage stress of the switches of the TL leg is half of the input voltage, and the switches can realize ZVS, so MOSFETs can be adopted; the voltage stress of the switches of the two-level leg is the input voltage, and the switches can realize ZCS, so IGBT can be adopted. The secondary rectified voltage is a TL waveform having lower high-frequency content compared with that of the traditional FB converters, which leads to the reduction of the output filter inductance. The input current of the converter has quite little ripple, so the input filter can also be significantly reduced. The operation principle of the proposed converter is analyzed and verified by the experimental results. Several ZVZCS PWM H-FB TL converters are also proposed in this paper.
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