LAPSE:2023.29216
Published Article
LAPSE:2023.29216
Quadrature Voltage Compensation in the Isolated Multi-Modular Converter
April 13, 2023
Series connections of modules in cascaded multilevel converters are prone to power imbalances due to voltage differences on their DC side. When modules are connected to direct current (DC) sources, such as photovoltaic panels, the capability of withstanding power imbalances is crucial for generating the maximum power. In order to provide a possible solution for this requirement, this paper proposes a control strategy called Quadrature Voltage Compensation, which allows a wide range of power imbalances. The proposed control strategy regulates the power by introducing a circulating current between the arms and a phase angle in the output voltage. The impact of the circulating current and its effect on the phase voltage are studied. To highlight the features of the proposed strategy, an analytical model based on vector superposition is also described, demonstrating the strong capability of tolerating power differences. Finally, to validate the effectiveness of the Quadrature Voltage Compensation, simulation and experimental results are presented for a three-phase isolated multi-modular converter.
Record ID
Keywords
cascaded-transformer multilevel inverter, energy balance operation, isolated multi-modular converter
Subject
Suggested Citation
Verdugo C, Candela JI, Rodriguez P. Quadrature Voltage Compensation in the Isolated Multi-Modular Converter. (2023). LAPSE:2023.29216
Author Affiliations
Verdugo C: Electrical Department, Technical University of Catalonia, 08222 Terrassa, Spain
Candela JI: Electrical Department, Technical University of Catalonia, 08222 Terrassa, Spain
Rodriguez P: Electrical Department, Technical University of Catalonia, 08222 Terrassa, Spain; Luxembourg Institute of Science and Technology (LIST) , 4362 Belval, Luxembourg [ORCID]
Candela JI: Electrical Department, Technical University of Catalonia, 08222 Terrassa, Spain
Rodriguez P: Electrical Department, Technical University of Catalonia, 08222 Terrassa, Spain; Luxembourg Institute of Science and Technology (LIST) , 4362 Belval, Luxembourg [ORCID]
Journal Name
Energies
Volume
14
Issue
3
First Page
529
Year
2021
Publication Date
2021-01-20
ISSN
1996-1073
Version Comments
Original Submission
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PII: en14030529, Publication Type: Journal Article
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LAPSE:2023.29216
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https://doi.org/10.3390/en14030529
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Apr 13, 2023
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