Abstract
This paper analyzes the maximum power transfer capability of the grid-connected renewable energy generation system, which is mainly influenced by the short circuit ratio (SCR) and the resistance-inductance ratio (R/X) of grid impedance. It is revealed that an inverter connected to the AC grid with a larger SCR or a smaller R/X ratio has more power transfer capability. Besides, it is found that the critical conditions for the inductive grid and the resistive grid are different. Under an inductive grid, SCR = 1 is a critical point for effective power transmission. However, under a resistive grid, the SCR needs to be at least higher than 5 for effective power transmission. Finally, simulation results verify the effectiveness of the analysis.
| Original language | English |
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| Journal | 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia) |
| Pages (from-to) | 1487-1490 |
| Number of pages | 4 |
| DOIs | |
| Publication status | Published - 2021 |
| Event | 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia) - , Singapore Duration: 24 May 2021 → 27 May 2021 |
Conference
| Conference | 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia) |
|---|---|
| Country/Territory | Singapore |
| Period | 24/05/2021 → 27/05/2021 |
Keywords
- grid impedance
- grid-connected inverter
- power transfer capability
- short circuit ratio