Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications

Sandoval, Jose M.; Cardenas, Victor; Barrios, Manuel A.; Garcia, Mario Gonzalez; Alcala, Janeth

doi:10.3390/electronics9020280

Open AccessArticle

Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications

by

Jose M. Sandoval

¹,

Victor Cardenas

^1,*,

Manuel A. Barrios

¹

,

Mario Gonzalez Garcia

² and

Janeth Alcala

³

¹

Engineering Department, Autonomous University of San Luis Potosi, Dr. Manuel Nava No. 8, Col. Zona Universitaria Poniente, 78290, San Luis Potosí, S. L. P., Mexico

²

Engineering Department, Conacyt - Autonomous University of San Luis Potosi, San Luis Potosí, S. L. P., 78290, Mexico

³

Faculty of Electromechanical Engineering, University of Colima, Manzanillo, Colima, 28864, Mexico

^*

Author to whom correspondence should be addressed.

Electronics 2020, 9(2), 280; https://doi.org/10.3390/electronics9020280

Submission received: 29 December 2019 / Revised: 29 January 2020 / Accepted: 30 January 2020 / Published: 6 February 2020

(This article belongs to the Special Issue Power Converters in Power Electronics)

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Abstract

In order to address power imbalance in large-scale PV systems, this paper presents a multiport isolated medium-frequency (MF) link to process different power levels from PV arrays, using current-fed Z-source inverters (CZSI) modules to drive the energy from the PV array to the MF link in a single power stage. The MF link provides the galvanic isolation required by many codes and standards to integrate a system to the grid. The multiport configuration of the MF link allows the system to process different power levels on each primary port and, being all ports magnetically coupled, provide balanced power levels on secondary ports which can be used for multilevel converters applications. Additionally, the current-fed version of the Z-source topology offers natural protection against short-circuit damage enhancing reliability of the system. The analysis of CZSI cells and the study of asymmetrical power levels transference, as well as simulation and experimental results are presented.

Keywords: Photovoltaics; Z-Source; Current-fed; Medium-Frequency; Power-Imbalance

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MDPI and ACS Style

Sandoval, J.M.; Cardenas, V.; Barrios, M.A.; Garcia, M.G.; Alcala, J. Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications. Electronics 2020, 9, 280. https://doi.org/10.3390/electronics9020280

AMA Style

Sandoval JM, Cardenas V, Barrios MA, Garcia MG, Alcala J. Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications. Electronics. 2020; 9(2):280. https://doi.org/10.3390/electronics9020280

Chicago/Turabian Style

Sandoval, Jose M., Victor Cardenas, Manuel A. Barrios, Mario Gonzalez Garcia, and Janeth Alcala. 2020. "Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications" Electronics 9, no. 2: 280. https://doi.org/10.3390/electronics9020280

APA Style

Sandoval, J. M., Cardenas, V., Barrios, M. A., Garcia, M. G., & Alcala, J. (2020). Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications. Electronics, 9(2), 280. https://doi.org/10.3390/electronics9020280

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

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Multiport Isolated link with Current-Fed Z-Source Converters to Manage Power Imbalance in PV Applications

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