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In this paper, an interleaved zero-voltage switching (ZVS) coupled-inductors buck converter with active-clamp circuits is study. Compared with passive-clamp circuits, the active-clamp circuits in the interleaved buck converter provided can have benefits of recycling the leakage energy, while minimum ringing voltage is across the active switches. Moreover, since both main and auxiliary switches can...
This paper presents a coupled-buck converter with active-clamp circuits. The active switches in the converter can sustain a long enough duty cycle while it operates with a high step-down voltage ratio, reducing current stress significantly. In the converter, the active-clamp circuits provided can have benefits of recycling the leakage energy, while minimum ringing voltage is across the active switches...
This paper presents an interleaved soft-switching buck converter with coupled inductors to extend duty ratio for high step-down voltage applications. In the proposed converter, a single-capacitor turn-off snubber is introduced to limit rising rate of active switches to reduce turn-off loss. To handle the energy trapped in the leakage inductance of the coupled inductors, simple passive-clamp circuits...
A contactless inspection method based on digital image processing technique is introduced to improve measurement of specimen deformation in triaxial test of geomaterials. Based on this method, a series of conventional triaxial compression tests under different stress paths are investigated. Then an elastoplastic constitutive model of soil is acquired through the numerical method of modeling constitutive...
In this paper, an improved current-doubler rectifier with coupled inductors is proposed. The proposed rectifier can extend duty ratio to reduce the peak current through the isolation transformer winding and lower output current ripple as well as voltage stress of the rectifier diodes. In this study, a 500-W prototype with a full-bridge phase-shift converter, the proposed rectifier, with input voltage...
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