A vector control strategy to eliminate active power oscillations in four-leg grid-connected converters under unbalanced voltages
dc.creator | Mora Castro, Andrés Felipe | |
dc.creator | Cárdenas Dobson, Jesús Roberto Pedro Alejandro | |
dc.creator | Urrutia O., Matías | |
dc.creator | Espinoza Bolaños, Mauricio | |
dc.creator | Díaz Díaz, Matías | |
dc.date.accessioned | 2024-10-30T19:19:24Z | |
dc.date.available | 2024-10-30T19:19:24Z | |
dc.date.issued | 2020-06 | |
dc.description.abstract | The problems associated with active power oscillations (APOs) in grid-connected converters are well-known. Imbalances in the grid usually produce double-frequency oscillations in the dc-link voltage and current which could reduce the useful life of solar panels, batteries, and capacitors connected to this point. Moreover, as reported in the literature, double-frequency reactive power oscillations (RPOs) also produce adverse effects in distribution systems, and it is desirable to eliminate or mitigate them. When a four-leg power converter is connected to an unbalanced grid, the zero-sequence current provides extra degrees of freedom to compensate or even eliminate the power oscillations at the converter dc-link side. In this paper, a new methodology to regulate these double-frequency power components is proposed. It is based on a closed-loop vector control approach, where the active power oscillations (APOs) at converter side are transformed into a synchronous frame rotating at twice the grid frequency and regulated using the zero-sequence current. To avoid overcurrent produced by the circulation of positive-, negative-, and zero-sequence components a current limiter is also proposed in this paper. Experimental results obtained with a 4-kW four-leg power converter prototype are presented and discussed in this paper. | |
dc.description.procedence | UCR::Vicerrectoría de Docencia::Ingeniería::Facultad de Ingeniería::Escuela de Ingeniería Eléctrica | |
dc.description.sponsorship | Fondo Nacional de Desarrollo Científico y Tecnológico/[1180879]/Fondecyt/Chile | |
dc.description.sponsorship | Centro Avanzado de Ingeniería Eléctrica y Electrónica/[FB0008]/AC3E/Chile | |
dc.description.sponsorship | Comisión Nacional de Investigación Científica y Tecnológica-Programa Formación de Capital Humano Avanzado/[2013-21130042]/CONICYT-PCHA/Chile | |
dc.identifier.citation | https://ieeexplore.ieee.org/abstract/document/8732350 | |
dc.identifier.doi | 10.1109/JESTPE.2019.2921536 | |
dc.identifier.issn | 2168-6777 | |
dc.identifier.issn | 2168-6785 | |
dc.identifier.uri | https://hdl.handle.net/10669/100005 | |
dc.language.iso | eng | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | en |
dc.source | IEEE Journal of Emerging and Selected Topics in Power Electronics, 8(2), 1728-1738 | |
dc.subject | DC–AC converters | |
dc.subject | distribution system | |
dc.subject | symmetrical components | |
dc.subject | Reactive power | |
dc.subject | DC-AC power converters | |
dc.subject | Power distribution | |
dc.subject | Power control | |
dc.title | A vector control strategy to eliminate active power oscillations in four-leg grid-connected converters under unbalanced voltages | |
dc.type | artículo original |
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