Cooperative regulation of imbalances in three-phase four-wire microgrids using single-phase droop control and secondary control algorithms
Author
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Espina González, Enrique
Author
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Cárdenas Dobson, Roberto
Author
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Espinoza-B, Mauricio
Author
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Burgos Mellado, Claudio
Author
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Sáez Hueichapan, Doris
Admission date
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2020-11-09T22:21:24Z
Available date
dc.date.available
2020-11-09T22:21:24Z
Publication date
dc.date.issued
2020
Cita de ítem
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IEEE Transactions on Power Electronics. Vol. 35 (2): 1978-1992
es_ES
Identifier
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10.1109/TPEL.2019.2917653
Identifier
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https://repositorio.uchile.cl/handle/2250/177613
Abstract
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Collaborative control of power converters operating in microgrids with unbalanced single-phase loads is difficult to achieve, considering that the voltages and currents have positive-, negative-, and zero-sequence components. In this paper, a new control scheme for collaborative control of four-leg microgrids is proposed. The main advantage of the proposedmethodology is simplicity, because the sharing of the powers produced by the positive-, negative-, and zero-sequence voltage and currents is simple to achieve using the easy to implement and well-known droop control algorithms, i.e., as those based onP-. andQ-v droop control. The proposed droop algorithms do not require high bandwidth communication channels and the application of virtual impedances, whose design usually demands extensive simulation work, is not required. Three secondary control systems are also analyzed, discussed, and implemented in this paper to regulate the frequency, voltage, and phase at the point of common coupling (PCC), to achieve a balanced 50-Hz three-phase voltage supply in the PCC during steadystate operation. For these secondary control systems, single-phase phase-locked loop based on quadrature signal generators are implemented. Small signal modeling and design are discussed in this paper. A microgrid prototype of similar to 5 kW, implemented using two power converters of 3 kW(each), is used to experimentally validate the proposed algorithms.
es_ES
Patrocinador
dc.description.sponsorship
Comisión Nacional de Investigación Científica y Tecnológica (CONICYT)
CONICYT FONDECYT
1170683
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT PIA/BASAL
FB0008
CONICYT-PIA-FB0816
CONICYT-PCHA/Doctorado Nacional/2017-21171858
es_ES
Lenguage
dc.language.iso
en
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Publisher
dc.publisher
Institute of Electrical and Electronics Engineers (IEEE)