Autor segons l'article: Ramos, ER; Leyva, R; Farivar, GG; Townsend, CD; Pou, J
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: Leyva Grasa, Ramon
Paraules clau: Steady-state Statcom Oscillators Harmonic analysis Cascaded h-bridge (chb) Capacitors Capacitance Automatic voltage control thin dc capacitor steady-state static compensator (statcom) statcom star performance oscillators optimization methods multilevel converter linear programming index terms harmonic analysis converters compensation region of negative-sequence currents circulating current injection cascaded h-bridge (chb) capacitance automatic voltage control
Resum: The cascaded H-bridge (CHB) low-capacitance static compensator (LC-StatCom) has a limited negative-sequence current injection capability compared to a conventional CHB StatCom, due to the comparatively larger oscillations on the capacitor voltages. Placing limits on the ability to provide negative-sequence current to the grid for a given capacitor size is required to prevent overmodulation. This paper shows that these limits can be maximised by injecting an optimal third-harmonic circulating current. The effects of injecting the third-harmonic current on the capacitor voltages, both in balanced and unbalanced grid voltage conditions, are analyzed. Specifically, the procedure allows the knowledge of the potential capability of the LC-StatCom when injecting negative-sequence currents. The procedure is based on a linear programming approach. Although the procedure is applicable to any CHB StatCom, regardless of the submodule capacitor size, it is particularly important in LC-StatComs. To corroborate the proposed analysis, simulation and experimental results under balanced and unbalanced grid voltage conditions are presented.
Àrees temàtiques: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: ramon.leyva@urv.cat
Identificador de l'autor: 0000-0001-6431-3688
Data d'alta del registre: 2024-08-03
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: Ieee Transactions On Power Electronics. 38 (4): 4544-4558
Referència de l'ítem segons les normes APA: Ramos, ER; Leyva, R; Farivar, GG; Townsend, CD; Pou, J (2023). Negative-Sequence Current Capability in Low-Capacitance Cascaded H-Bridge Static Compensators With Optimal Third-Harmonic Circulating Current Injection. Ieee Transactions On Power Electronics, 38(4), 4544-4558. DOI: 10.1109/TPEL.2022.3233033
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2023
Tipus de publicació: Journal Publications
Repositori URV