Attenuation of Zero Sequence Voltage Using a Conventional Three-Wire Dynamic Voltage Restorer

Rafael Neto, Yandi Landera, Francisco Neves, Helber de Souza, Marcelo Cavalcanti and Gustavo Azevedo
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Rafael Neto: Power Electronics and Drives Research Group (GEPAE), DEE, Universidade Federal de Pernambuco, Recife 50740-530, Brazil
Yandi Landera: Power Electronics and Drives Research Group (GEPAE), DEE, Universidade Federal de Pernambuco, Recife 50740-530, Brazil
Francisco Neves: Power Electronics and Drives Research Group (GEPAE), DEE, Universidade Federal de Pernambuco, Recife 50740-530, Brazil
Helber de Souza: Department of Industry, Instituto Federal de Educação, Ciência e Tecnologia de Pernambuco, Pesqueira 55200-000, Brazil
Marcelo Cavalcanti: Power Electronics and Drives Research Group (GEPAE), DEE, Universidade Federal de Pernambuco, Recife 50740-530, Brazil
Gustavo Azevedo: Power Electronics and Drives Research Group (GEPAE), DEE, Universidade Federal de Pernambuco, Recife 50740-530, Brazil

Energies, 2021, vol. 14, issue 5, 1-14

Abstract: Voltage sags/swells and harmonics are recurring problems in electric energy distribution systems. In order to solve these issues, several dynamic voltage restorer (DVR) topologies, such as the conventional three-wire DVR, have been proposed in the literature. Despite its capability of mitigating voltage disturbances, many researchers have established that conventional three-wire DVR cannot compensate for zero sequence voltage disturbances. In this paper, an in-depth study of the conventional three-phase DVR is presented, which shows that this DVR topology can also be used to attenuate zero sequence voltage components without increasing control complexity. The necessary conditions for this to occur are discussed in details and a brief comparison between the conventional three-wire DVR and other DVR topologies that can compensate for zero sequence voltage disturbances is made. Experimental results are included to validate the theoretical study.

Keywords: dynamic voltage restorer; power quality; voltage sags/swells; zero sequence attenuation (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
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