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In this paper, a novel single-stage softswitching current-fed full-bridge AC/DC converter is proposed. By adding an additional commutation path, softswitching can be realized for all power devices. The power density is also enhanced by eliminating the DC capacitor. Meanwhile, the conduction loss is also lowered through the use of the additional commutation path. Furthermore, the control strategy for...
In this paper, a novel single-stage isolated AC-DC converter is proposed for single-phase high power PFC applications. The circuit is derived by combining the boost converter and the matrix-based isolated AC-DC converter. Compare to traditional PFC plus DC/DC configuration, this topology has no diode front end and the number of semiconductors in the current path is minimized. Thus the conduction loss...
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