Next Article in Journal
Pressure Losses in Multiple-Elbow Paths and in V-Bends of Hydraulic Manifolds
Next Article in Special Issue
Constant DC-Capacitor Voltage-Control-Based Harmonics Compensation Strategy of Smart Charger for Electric Vehicles in Single-Phase Three-Wire Distribution Feeders
Previous Article in Journal
Theoretical and Experimental Studies of a Switched Inertance Hydraulic System in a Four-Port High-Speed Switching Valve Configuration
Previous Article in Special Issue
Modified Synchronous Reference Frame Based Shunt Active Power Filter with Fuzzy Logic Control Pulse Width Modulation Inverter
Article Menu
Issue 6 (June) cover image

Export Article

Open AccessArticle
Energies 2017, 10(6), 779; doi:10.3390/en10060779

A New Real Time Lyapunov Based Controller for Power Quality Improvement in Unified Power Flow Controllers Using Direct Matrix Converters

1
INESC-ID, 1000-029 Lisbon, Portugal, and Instituto Superior de Engenharia de Lisboa, Polytechnic Institute of Lisbon, 1959-007 Lisbon, Portugal
2
INESC-ID, 1000-029 Lisbon, Portugal, and with DEEC, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
3
Electrical Engineering Department, University of Huelva, La Rábida, 21819 Palos de la Frontera, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Frede Blaabjerg
Received: 17 March 2017 / Revised: 22 May 2017 / Accepted: 1 June 2017 / Published: 6 June 2017
(This article belongs to the Special Issue Power Electronics in Power Quality)
View Full-Text   |   Download PDF [2582 KB, uploaded 6 June 2017]   |  

Abstract

This paper proposes a Direct Matrix Converter operating as a Unified Power Flow Controller (DMC-UPFC) with an advanced control method for UPFC, based on the Lyapunov direct method, presenting good results in power quality assessment. This control method is used for real-time calculation of the appropriate matrix switching state, determining which switching state should be applied in the following sampling period. The control strategy takes into account active and reactive power flow references to choose the vector converter closest to the optimum. Theoretical principles for this new real-time vector modulation and control applied to the DMC-UPFC with input filter are established. The method needs DMC-UPFC dynamic equations to be solved just once in each control cycle, to find the required optimum vector, in contrast to similar control methods that need 27 vector estimations per control cycle. The designed controller’s performance was evaluated using Matlab/Simulink software. Controllers were also implemented using a digital signal processing (DSP) system and matrix hardware. Simulation and experimental results show decoupled transmission line active (P) and reactive (Q) power control with zero theoretical error tracking and fast response. Output currents and voltages show small ripple and low harmonic content. View Full-Text
Keywords: Unified Power Flow Controllers (UPFC); Direct Matrix Converter (DMC); digital control; real time Lyapunov Unified Power Flow Controllers (UPFC); Direct Matrix Converter (DMC); digital control; real time Lyapunov
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Monteiro, J.; Pinto, S.; Delgado Martin, A.; Silva, J.F. A New Real Time Lyapunov Based Controller for Power Quality Improvement in Unified Power Flow Controllers Using Direct Matrix Converters. Energies 2017, 10, 779.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top