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Investigation on Dynamic Voltage Restorers With Two DC Links and Series Converters for Three-Phase Four-Wire Systems

2015; Institute of Electrical and Electronics Engineers; Volume: 52; Issue: 2 Linguagem: Inglês

10.1109/tia.2015.2490040

ISSN

1939-9367

Autores

Gregory Arthur de Almeida Carlos, Cursino B. Jacobina, E. C. dos Santos,

Tópico(s)

Magnetic Properties and Applications

Resumo

This paper proposes three dynamic voltage restorer (DVR) topologies. Such configurations are able to compensate voltage sags/swells in three-phase four-wire (3P4W) systems under balanced and unbalanced conditions. The proposed systems use two independent dc links. Proposed configurations present advantages in terms of switch blocking voltages and consequently lower dc-link voltage rating. The complete control system, including the pulsewidth modulation (PWM) technique, is developed, and comparisons between the proposed configurations and a conventional one are performed. Simulation and experimental results are provided to validate the theoretical approach.

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