Low-Frequency Passivity-Based Analysis and Damping of Power-Synchronization Controlled Grid-Forming Inverter

Autor:	Fangzhou Zhao, Xiongfei Wang, Tianhua Zhu
Rok vydání:	2023
Předmět:	Eigenvalues and eigenfunctions Grid-forming inverter passivity index Frequency control Resistance Energy Engineering and Power Technology Indexes Admittance Inverters Synchronization stability Electrical and Electronic Engineering virtual reactance
Zdroj:	Zhao, F, Wang, X & Zhu, T 2022, ' Low-Frequency Passivity-Based Analysis and Damping of Power-Synchronization Controlled Grid-Forming Inverter ', IEEE Journal of Emerging and Selected Topics in Power Electronics, pp. 1 . https://doi.org/10.1109/JESTPE.2022.3218845
ISSN:	2168-6785 2168-6777
Popis:	This paper presents a passivity-based analysis and damping method for the low-frequency dynamics of grid-forming (GFM) control. A closed-form analytical solution to the positive realness of control input admittance is developed, which reveals the inherent non-passive property of GFM control. This feature gives rise to the risk of instability, especially in connection with a nearby non-passive GFM inverter, which may induce undesired control interactions. It is further revealed that the passivity index is determined by a low-frequency resonance around 10 Hz in the dq-frame, and this resonance can be better dampened, therefore with enhanced passivity index, by using a virtual reactance than using a virtual resistance. Finally, the theoretical findings are verified by the experimental results.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e20bef19993c557531fccb18d1bad411 https://doi.org/10.1109/jestpe.2022.3218845 Zobrazit plný text záznamu