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| Content Provider | IET Digital Library |
|---|---|
| Author | Ibanez, Federico Echeverria, Jose Martín Fontan, Luis |
| Abstract | This study analyses a novel technique for obtaining a voltage conversion ratio greater than one in a bidirectional series-resonant DC/DC converter (SRC). The converter works in a discontinuous mode: it transfers energy in packets, but it also accumulates some packets in order to raise the output voltage. This study presents a comprehensive theoretical analysis for the two modes: the step-down mode (common mode) and the novel step-up mode. The converter transfers energy during fixed time intervals (called states), and it is also able to accumulate energy in a novel state called the accumulation state. With this, the circuit can achieve a voltage conversion ratio of up to two. In addition, a design methodology is presented, and it is validated in the design of a high-current bidirectional DC/DC converter for battery applications. The results of the voltage conversion ratio and efficiency measurement are presented along with a comparison with an resonant LLC converter. The converter reaches an efficiency rate of 91% and the voltage conversion ratio varies from 0.8 to 1.22 at maximum power. Using this novel technique, the SRC can now be used in a bidirectional DC/DC converter applied to energy storage devices, such as batteries or supercapacitors. |
| Starting Page | 1019 |
| Ending Page | 1028 |
| Page Count | 10 |
| ISSN | 17554535 |
| Volume Number | 6 |
| e-ISSN | 17554543 |
| Issue Number | Issue 5, May (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/6/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2012.0540 |
| Journal | IET Power Electronics |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Accumulation State Bidirectional SRC DC-DC Power Converter Discontinuous Mode Fixed Time Intervals High-current Bidirectional Series-resonant DC-DC Converter LLC Alternative Power Electronics Power Supply Step-down Mode Step-up Mode Supervisory Circuit Voltage Conversion Ratio |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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