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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Liivik, L. Chub, A. Vinnikov, D. Zakis, J. |
| Copyright Year | 2015 |
| Description | Author affiliation: Inst. of Ind. Electron. & Electr. Eng., Riga Tech. Univ., Riga, Latvia (Vinnikov, D.; Zakis, J.) || Dept. of Electr. Eng., Tallinn Univ. of Technol., Tallinn, Estonia (Liivik, L.; Chub, A.) |
| Abstract | Quasi-Z-source DC-DC converters have attracted research interest due to their numerous advantages in emerging applications. However, they suffer from relatively low efficiency. This paper presents semiconductor loss breakdown of the quasi-Z-source DC-DC converter to show that conduction losses in semiconductors contribute most to overall losses. Synchronous rectification realized through replacement of diodes with N-channel MOSFETs was proposed to improve the converter efficiency in prior works. Our detailed experimental study of efficiency improvement with synchronous rectification was based on a 250 W prototype. Results were first obtained for replacement of diodes in the primary side only, then in the secondary side only. Finally, a converter that contains only controlled switches was evaluated. Efficiency curves measured were compared with those for the baseline diode-based topology. The experimental study was performed using operating points typical of photovoltaic module integrated converters. |
| Starting Page | 409 |
| Ending Page | 414 |
| File Size | 732609 |
| Page Count | 6 |
| File Format | |
| ISSN | 21669546 |
| e-ISBN | 9781479963010 |
| DOI | 10.1109/CPE.2015.7231110 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-06-24 |
| Publisher Place | Portugal |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | MOSFET Schottky diodes DC-DC converter synchronous rectification photovoltaic energy converter Capacitors quasi-Z-source Switching loss DC-DC power converters Inverters power losses |
| Content Type | Text |
| Resource Type | Article |
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