Which are the new developments of grid-forming converters in harmonics issues?
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Grid-forming converters have seen new developments in addressing harmonics issues. One significant advancement is the analytical derivation of DC-link oscillations caused by harmonic current injection into the grid, impacting the DC-link capacitor's lifetime. Additionally, a method for calculating Harmonic Power-Flow (HPF) in three-phase grids with Converter-Interfaced Distributed Energy Resources (CIDERs) has been proposed, considering the coupling between harmonics and utilizing modular representations for system components. Furthermore, an extension of harmonic analysis frequency to the entire frequency range has been achieved by addressing aliasing and sideband effects, enabling comprehensive analysis of grid-connected converters' harmonic performances. These developments highlight the ongoing efforts to enhance grid-forming converters' capabilities in mitigating harmonics and improving grid stability.
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| Papers (5) | Insight |
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4 Citations | The paper introduces extended harmonic analysis for grid-connected converters, addressing high-frequency harmonic challenges through regression and artificial neural networks, enhancing harmonic instability, resonance, and overvoltage analysis. |
| Grid-forming converters in harmonics issues benefit from linear r(,) functions, aiding in their minority representation. The paper emphasizes their distinct behavior compared to grid-following converters. | |
| Grid-forming converters address harmonics by injecting currents, causing DC-link voltage oscillations. This study highlights the impact on capacitor lifespan, urging designers to consider these dynamics to prevent premature failures. | |
Open access•Posted Content 23 Jun 2021 | The paper introduces a method for Harmonic Power-Flow (HPF) analysis in grids with Converter-Interfaced Distributed Energy Resources, considering coupling between harmonics and grid-forming control laws. |
| Grid-forming converters address harmonics by injecting currents, causing dc-link voltage oscillations. This stresses the capacitor, potentially reducing its lifetime by up to 52%. |
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