Novel High-Efficiency High Step-Up DC–DC Converter with Soft Switching and Low Component Voltage Stress for Photovoltaic System
| Autor: | Yu-En Wu, Jyun-Wei Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
voltage doubler circuit
Materials science three-winding coupled inductor photovoltaic (PV) systems Bioengineering TP1-1185 02 engineering and technology Hardware_PERFORMANCEANDRELIABILITY Inductor law.invention law Hardware_GENERAL 0202 electrical engineering electronic engineering information engineering Hardware_INTEGRATEDCIRCUITS Chemical Engineering (miscellaneous) QD1-999 Leakage inductance Voltage doubler business.industry Chemical technology Process Chemistry and Technology 020208 electrical & electronic engineering Photovoltaic system Electrical engineering 020206 networking & telecommunications step-up DC–DC converter Chemistry Capacitor Magnetic core Inverter business Voltage |
| Zdroj: | Processes Volume 9 Issue 7 Processes, Vol 9, Iss 1112, p 1112 (2021) |
| ISSN: | 2227-9717 |
| DOI: | 10.3390/pr9071112 |
| Popis: | This study developed a novel, high-efficiency, high step-up DC–DC converter for photovoltaic (PV) systems. The converter can step-up the low output voltage of PV modules to the voltage level of the inverter and is used to feed into the grid. The converter can achieve a high step-up voltage through its architecture consisting of a three-winding coupled inductor common iron core on the low-voltage side and a half-wave voltage doubler circuit on the high-voltage side. The leakage inductance energy generated by the coupling inductor during the conversion process can be recovered by the capacitor on the low-voltage side to reduce the voltage surge on the power switch, which gives the power switch of the circuit a soft-switching effect. In addition, the half-wave voltage doubler circuit on the high-voltage side can recover the leakage inductance energy of the tertiary side and increase the output voltage. The advantages of the circuit are low loss, high efficiency, high conversion ratio, and low component voltage stress. Finally, a 500-W high step-up converter was experimentally tested to verify the feasibility and practicability of the proposed architecture. The results revealed that the highest efficiency of the circuit is 98%. |
| Databáze: | OpenAIRE |
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