'Institute of Electrical and Electronics Engineers (IEEE)'
Doi
Abstract
This paper presents a single-phase shunt active
power filter (SAPF) with bidirectional dc-dc converter for
uninterruptible power supply (UPS) operation. The proposed
system comprises two power converters, namely a dc-ac
converter to interface the power grid and a bidirectional isolated
dc-dc converter connected to a battery pack, with both
converters sharing the same dc-link. The arrangement of the
converters allows the operation of the system in three different
modes: (1) As SAPF, during normal operation; (2) As off-line
UPS, in case of power grid outages; (3) As battery charging
system, combined with the operation as SAPF. Simulation results
of these three modes are presented in the paper to prove the
operation feasibility of the proposed system. A reduced-scale
prototype was developed, and the main parameters of the control
stage, as well as the implemented control algorithms and power
structure, are described in the paper. The experimental results
obtained highlight the main benefits of the developed prototype.This work has been supported by COMPETE: POCI-01-
0145-FEDER-007043 and FCT – Fundação para a Ciência e
Tecnologia within the Project Scope: UID/CEC/00319/2013.
This work is financed by the ERDF – European Regional
Development Fund through the Operational Programme for
Competitiveness and Internationalisation COMPETE 2020
Programme, and by National Funds through the Portuguese
funding agency, FCT Fundação para a Ciência e a
Tecnologia, within project SAICTPAC/0004/2015 POCI
01 0145 FEDER 016434.info:eu-repo/semantics/publishedVersio
