Research on an Improved Single-Phase Unisolated Grid-Connected Photovoltaic Inverter
| Autor: | Baoge Zhang, Deyu Hong |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | European Journal of Electrical Engineering. 23:123-130 |
| ISSN: | 2116-7109 2103-3641 |
| DOI: | 10.18280/ejee.230205 |
| Popis: | An improved single-phase unisolated grid-connected photovoltaic inverter topology is proposed to solve the common mode leakage current problem of unisolated grid-connected photovoltaic inverters. By analyzing the topology structure and voltage clamping principle of the improved inverter, the topology can maintain the same low input voltage as the full-bridge inverter, and ensure that the common-mode voltage in the continuation mode is clamped to the midpoint voltage of the bus, so as to effectively reduce the common-mode leakage current caused by the common-mode voltage suspension in the continuation mode. Moreover, the common-mode leakage current of the improved topology is smaller than that of the traditional H6-2D topology at similar conversion efficiency. The simulation results on MATLAB /Simulink platform show that the topology is feasible and effective. |
| Databáze: | OpenAIRE |
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