Abstract
In this paper, a single-stage AC/DC boost-zeta converter with soft switching operation is presented. To make power factor high, a boost PFC cell with discontinuous conduction mode (DCM) is presented. Two switch zeta DC-DC module with critical conduction mode (CRM) is introduced for galvanic isolation and soft-switching operation. In addition, the output diode turned off under zero-current-switching (ZCS) condition and its reverse-recovery problem is alleviated. Besides, voltage stresses of the main switches are clamped to dc-bus voltage by clamping diodes and the current in the leakage inductor is absorbed by clamping diodes into dc-bus capacitor and it is reprocessed by the two switch zeta DC-DC module. The operational principle and a steady-state analysis of the proposed converter are provided in detail. In order to verify the theoretical analysis, experimental results based on a 24[V]-60[W] prototype are presented.
| Original language | English |
|---|---|
| Pages (from-to) | 889-897 |
| Number of pages | 9 |
| Journal | International Review of Electrical Engineering |
| Volume | 9 |
| Issue number | 5 |
| DOIs | |
| State | Published - 1 Oct 2014 |
Keywords
- AC/DC converter
- Critical-Conduction Mode (CRM)
- Power Factor Correction (PFC)
- Single stage
- Soft switching operation
- Zeta converter
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