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| Content Provider | IET Digital Library |
|---|---|
| Author | Chen, Manxin Cheng, Eric Ka Wai |
| Abstract | This study proposes a method of integrating the voltage-lift technique with multiple-winding coupled inductor to form non-isolated DC–DC converters that are able to provide high-voltage gain. Voltage-lift structures containing one diode and one capacitor are inserted in the primary and secondary sides of the coupled inductor, similar to available switched-coupled-inductor boost converters. This idea is further developed in this study, and generalised converters are derived by increasing the number of coupled-inductor windings, with voltage-lift structures applied to all windings. Improved converters with reduced capacitors count are also derived based on the generalised converters. They all feature high-voltage gain and low-voltage stress, which facilitates the selection of low-voltage-rating switch with low on-resistance to increase conversion efficiency. Low-voltage-rating capacitors can also be used to minimise converter cost. Operational principles of the selected converter during four switching stages, and steady-state analysis results of its improved converter are presented. A voltage-clamp passive snubber for dealing with leakage effect is introduced. Prototype converters as well as its improved version are built in laboratory to validate the proposed method. The improved converter achieves maximum efficiency of 94.1% at 200 W nominal output. |
| Starting Page | 1964 |
| Ending Page | 1973 |
| Page Count | 10 |
| ISSN | 17554535 |
| Volume Number | 11 |
| e-ISSN | 17554543 |
| Issue Number | Issue 12, Oct (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/11/12 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0805 |
| Journal | IET Power Electronics |
| Publisher Date | 2018-06-19 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Capacitor Coupled-inductor Windings DC-DC Power Converter General Circuit Analysis And Synthesis Method Inductor Inductors And Transformer Multiple-winding Coupled Inductor Network Analysis Nonisolated DC-DC Converter Power 200 W Power Electronics Power Supply Snubbers Supervisory Circuit Switched-coupled-inductor Boost Converter Switching Converter Ultrahigh-voltage Conversion Ratio Voltage-clamp Passive Snubber Voltage-lift Technique |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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