Novel Five-Level ANPC Bidirectional Converter for Power Quality Enhancement during G2V/V2G Operation of Cascaded EV Charger

Jorge Lara, Lesedi Masisi, Concepcion Hernandez, Marco A. Arjona and Ambrish Chandra
Additional contact information
Jorge Lara: División de Estudios de Posgrado e Investigación, TNM Instituto Tecnológico de La Laguna, Torreón 27000, Mexico
Lesedi Masisi: School of Electrical and Information Engineering, University of the Witwatersrand, Johannesburg 2000, South Africa
Concepcion Hernandez: División de Estudios de Posgrado e Investigación, TNM Instituto Tecnológico de La Laguna, Torreón 27000, Mexico
Marco A. Arjona: División de Estudios de Posgrado e Investigación, TNM Instituto Tecnológico de La Laguna, Torreón 27000, Mexico
Ambrish Chandra: Department of Electrical Engineering, École de Technologie Supérieure (ÉTS), Montreal, QC H3C 1K3, Canada

Energies, 2021, vol. 14, issue 9, 1-19

Abstract: This paper presents a novel single-phase (SP) active-neutral point clamped (ANPC) five-level bidirectional converter (FLBC) for enhancing the power quality (PQ) during the grid-to-vehicle (G2V) and vehicle-to-grid (V2G) operation of an electric vehicle (EV) charger connected in series. This EV charger is based on a dual-active half-bridge DC-DC converter (DAHBC) with a high frequency isolation transformer. Unlike the comparable ANPC topologies found in literature, the proposed one has two more switches, i.e., ten instead of eight. However, with the addition of these components, the proposed multilevel converter not only becomes capable of properly balancing the voltage of the DC-link split capacitors under various step-changing conditions but it achieves a better efficiency, a lower stress of the switching devices and a more even distribution of the power losses. The resulting grid-tied ANPC-SPFLBC and DAHBC are accurately controlled with a cascaded control strategy and a single-phase shift (SPS) control technique, respectively. The simulation results obtained with MATLAB-SimPowerSystems as well as the experimental results obtained in laboratory validate the proposed ANPC-SPFLBC for a set of exhaustive tests in both V2G and G2V modes. A detailed power quality analysis carried out with a Fluke 43B alike demonstrates the good performance of the proposed topology.

Keywords: single-phase five-level converter; ANPC topology; DC-link split capacitors voltage balancing; power quality enhancement; electric vehicle charger; G2V/V2G operation modes (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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