A Common Grounded Type Dual-Mode Five-Level Transformerless Inverter for Photovoltaic Applications
| Autor: | Reza Barzegarkhoo, Yam P. Siwakoti, Noman Habib Khan, Dylan Dah-Chuan Lu, Saad Ul Hasan, Mark J. Scott, Shakil Ahamed Khan, Li Li, Franciszek Sidorski, Frede Blaabjerg |
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| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
leakage current
business.industry Computer science multilevel inverter 020208 electrical & electronic engineering Photovoltaic system Mode (statistics) Electrical engineering Topology (electrical circuits) 02 engineering and technology LC circuit law.invention Capacitor Terminal (electronics) Control and Systems Engineering law Common ground 0202 electrical engineering electronic engineering information engineering Inverter Electrical and Electronic Engineering business photovoltaic (PV) system Voltage |
| Zdroj: | Khan, M N H, Siwakoti, Y, Scott, M J, Li, L, Khan, S A, Lu, D D C, Barzegarkhoo, R, Sidorski, F, Blaabjerg, F & Ul Hasan, S 2021, ' A Common Grounded Type Dual-Mode Five-Level Transformerless Inverter for Photovoltaic Applications ', I E E E Transactions on Industrial Electronics, vol. 68, no. 10, 9219234, pp. 9742-9754 . https://doi.org/10.1109/TIE.2020.3028810 |
| DOI: | 10.1109/TIE.2020.3028810 |
| Popis: | This article presents a novel dual-mode five-level common grounded type (5L-DM-CGT) transformerless inverter topology for a medium-power application with a wide input voltage range (200–400 V). It consists of nine semiconductor switches, two inner flying-capacitors, and a small LC filter at the output side. Due to the direct connection of the negative terminal of the photovoltaic to the neutral point of the grid, there is no leakage current in the 5L-DM-CGT. Depending on the magnitude of the input voltage, the converter can operate in both buck and boost mode to produce the same ac output voltage. The theoretical analysis shows the advantages of the dual-mode inverter for various industrial applications. Finally, the laboratory test results are presented to verify the theoretical analysis. Measurement results show that the proposed inverter rated at 1 kW has around 97±1% efficiency over a wide range of load with a peak efficiency of 98.96% at 130 VA in buck mode and peak efficiency of 99% at 122 VA in boost mode. |
| Databáze: | OpenAIRE |
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