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| Format: | Artículo Open Access |
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Wiley
2025
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| Online-Zugang: | https://onlinelibrary.wiley.com/doi/10.1002/cta.4521 |
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| _version_ | 1867013169131552768 |
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| author | Yu Chen Guiping Du Boyou Li |
| author_facet | Yu Chen Guiping Du Boyou Li Yu Chen Guiping Du Boyou Li |
| collection | Wiley Open Access |
| contents | Controller Voltage Feedback‐Based Power Synchronization Control for Grid‐Forming Inverters Under Wide SCR Fluctuations Yu Chen Guiping Du Boyou Li International Journal of Circuit Theory and Applications ABSTRACT Grid‐forming inverter (GFI) suffers the small‐signal stability issue during grid strength fluctuations. Yet either complex control structures or additional parameters are required to enhance stability under wide short‐circuit ratio (SCR) fluctuations. In this article, controller voltage feedback‐based power synchronization control (CVF‐PSC) is proposed for GFI with simple structure and minimized parameters. The controller voltages rather than the sampled voltages are introduced to power synchronization control (PSC) and reactive power control (RPC) to generate the phase angle and voltage magnitude through controller voltage feedback loop (CVFL). Moreover, CVFL is imported into voltage error calculation to avoid low‐frequency resonance in stiff grid. Additionally, virtual resistance (VR) in the current feedback loop is replaced by the notch filter (NF) to guarantee low gain of power coupling terms across the subsynchronous frequency band during wide SCR variations. The small‐signal impedance model and power dynamic coupling behaviors are analyzed to verify the enhancement of the positive‐sequence impedance of CVF‐PSC and suppression on low‐frequency resonance under SCR fluctuations. From both theoretical and experimental results obtained from a grid‐connected GFI platform, the proposed CVF‐PSC are indicated to improve the stability and dynamic response under wide SCR fluctuations. 10.1002/cta.4521 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| doi_str_mv | 10.1002/cta.4521 |
| format | Artículo Open Access |
| id | wiley_oa_10_1002_cta_4521 |
| institution | Wiley Open Access |
| license_str_mv | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| publishDate | 2025 |
| publisher | Wiley |
| record_format | wiley_oa |
| spellingShingle | Controller Voltage Feedback‐Based Power Synchronization Control for Grid‐Forming Inverters Under Wide SCR Fluctuations Yu Chen Guiping Du Boyou Li International Journal of Circuit Theory and Applications Controller Voltage Feedback‐Based Power Synchronization Control for Grid‐Forming Inverters Under Wide SCR Fluctuations Yu Chen Guiping Du Boyou Li International Journal of Circuit Theory and Applications ABSTRACT Grid‐forming inverter (GFI) suffers the small‐signal stability issue during grid strength fluctuations. Yet either complex control structures or additional parameters are required to enhance stability under wide short‐circuit ratio (SCR) fluctuations. In this article, controller voltage feedback‐based power synchronization control (CVF‐PSC) is proposed for GFI with simple structure and minimized parameters. The controller voltages rather than the sampled voltages are introduced to power synchronization control (PSC) and reactive power control (RPC) to generate the phase angle and voltage magnitude through controller voltage feedback loop (CVFL). Moreover, CVFL is imported into voltage error calculation to avoid low‐frequency resonance in stiff grid. Additionally, virtual resistance (VR) in the current feedback loop is replaced by the notch filter (NF) to guarantee low gain of power coupling terms across the subsynchronous frequency band during wide SCR variations. The small‐signal impedance model and power dynamic coupling behaviors are analyzed to verify the enhancement of the positive‐sequence impedance of CVF‐PSC and suppression on low‐frequency resonance under SCR fluctuations. From both theoretical and experimental results obtained from a grid‐connected GFI platform, the proposed CVF‐PSC are indicated to improve the stability and dynamic response under wide SCR fluctuations. 10.1002/cta.4521 http://onlinelibrary.wiley.com/termsAndConditions#vor |
| title | Controller Voltage Feedback‐Based Power Synchronization Control for Grid‐Forming Inverters Under Wide SCR Fluctuations |
| topic | International Journal of Circuit Theory and Applications |
| url | https://onlinelibrary.wiley.com/doi/10.1002/cta.4521 |