Single-Phase Shunt Active Power Filter Based on a 5-Level Converter Topology

José Gabriel Oliveira Pinto, Rui Macedo, Vitor Monteiro, Luis Barros, Tiago Sousa and João L. Afonso
Additional contact information
José Gabriel Oliveira Pinto: Centro ALGORITMI—University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
Rui Macedo: Department of Industrial Electronics, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
Vitor Monteiro: Centro ALGORITMI—University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
Luis Barros: Centro ALGORITMI—University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
Tiago Sousa: Centro ALGORITMI—University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal
João L. Afonso: Centro ALGORITMI—University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal

Energies, 2018, vol. 11, issue 4, 1-26

Abstract: This paper presents a single-phase Shunt Active Power Filter (SAPF) with a multilevel converter based on an asymmetric full-bridge topology capable of producing five distinct voltage levels. The calculation of the SAPF compensation current is based on the Generalized Theory of Instantaneous Reactive Power ( p - q theory) modified to work in single-phase installations, complemented by a Phase-Locked Loop algorithm and by a dedicated algorithm to regulate the voltages in the DC-link capacitors. The control of the SAPF uses a closed loop predictive current control, followed by a multilevel Sinusoidal Pulse-Width Modulation technique with two vertical distributed carriers, which were specially conceived to deal with the asymmetric nature of the converter legs. Along the paper, some simulation results are used to show the main characteristics of the 5-level converter and control algorithms, and the hardware topology and control algorithms are described in detail. In order to demonstrate the feasibility and performance of the proposed SAPF based on a 5-level converter, a laboratory prototype was developed and experimental results obtained under diverse conditions of operation, with linear and non-linear loads, are presented and discussed in this paper.

Keywords: Shunt Active Power Filter; digital control; harmonics; multilevel converter; power quality; p - q theory (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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