Fault ride through (FRT) capability in wind turbines to maintain the grid stability during faults has become mandatory with the increasing grid penetration of wind energy. Doubly fed induction generator based wind turbine (DFIG-WT) is the most popularly utilized type of generator but highly susceptible to the voltage disturbances in grid. Dynamic voltage restorer (DVR) based external FRT capability improvement is considered. Since DVR is capable of providing fast voltage sag mitigation during faults and can maintain the nominal operating conditions for DFIG-WT. The effectiveness of the DVR using Synchronous reference frame (SRF) control is investigated for FRT capability in DFIG-WT during both balanced and unbalanced fault conditions. The operation of DVR is confirmed using time-domain simulation in MATLAB/Simulink using 1.5 MW DFIG-WT. © 2017 ISA

Palanisamy K

Department of Energy and Power Electronics

School of Electrical Engineering

Vellore Campus

Rini Ann Jerin A

Subramaniam U.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

ISA Transactions

This paper investigates the fault ride through (FRT) capability improvement of a doubly fed induction generator (DFIG)-based wind turbine using a dynamic voltage restorer (DVR). Series compensation of terminal voltage during fault conditions using DVR is carried out by injecting voltage at the point of common coupling to the grid voltage to maintain constant DFIG stator voltage. However, the control of the DVR is crucial in order to improve the FRT capability in the DFIG-based wind turbines. The combined feed-forward and feedback (CFFFB)-based voltage control of the DVR veries good transient and steadystate responses. The improvement in performance of the DVR using CFFFB control compared with the conventional feed-forward control is observed in terms of voltage sag mitigation capability, active and reactive power support without tripping, dc-link voltage balancing, and fault current control. The advantage of utilizing this combined control is veried through MATLAB/Simulink-based simulation results using a 1.5-MW grid connected DFIG-based wind turbine. The results showgood transient and steady-state response and good reactive power support during both balanced and unbalanced fault conditions. © 2017 IEEE.

Fulltext

IEEE Access

Improved Fault Ride Through Capability in DFIG Based Wind Turbines Using Dynamic Voltage Restorer With Combined Feed-Forward and Feed-Back Control

In this paper, Dynamic Voltage Restorer (DVR) based series compensation of the voltage to provide Fault Ride Through (FRT) and reactive power support is discussed. The control of DVR is crucial in order to improve the FRT capability in Doubly Fed Induction Generator (DFIG) based wind turbines. This is observed in terms of voltage sag mitigation capability, active and reactive power support without tripping and fault current control. To achieve a flexible control solution for balanced and unbalanced fault conditions, a combination of Feed-forward and Feed-back control is discussed in this paper. The advantage of utilizing this combined control is verified through MATLAB/Simulink based simulation results of a 1.5 MW grid connected DFIG based wind turbine. The results show good transient and steady-state response and good reactive power support during various fault scenarios. The results are verified for the recent updated grid code standards. © 2017 The Authors. Published by Elsevier Ltd.

Energy Procedia

FRT Capability in DFIG based Wind Turbines using DVR with Combined Feed-Forward and Feed-Back Control

Recently multilevel inverters (MLI) have attracted more attention in research and industry, as they are changing into a viable technology for several applications. The concept of MLI was introduced for high power and high/medium voltage applications as they can provide an effective interface with renewable energy sources. Developing of reduced switch MLI topology has been a rapid research topic since the past decade, which has not been reviewed so far. Therefore, this review article focuses on the different reduced switch MLI topologies under three categories such as symmetric, asymmetric and hybrid configurations. The important knowledge on these topologies is carefully tabulated based on the three categories in the comparison tables to understand the essential parameters of the MLI topologies. These configurations are not only generating higher voltage levels to improve the power quality but also to reduce the passive filter requirements. Also, this review includes a detailed perspective of various modulation techniques and control strategies for MLI topologies. In addition to that, the different performance parameters of MLI and its calculation methods are discussed with appropriate mathematical expression. This review will help in the selection of appropriate MLI topology for FACTS, motor drives and renewable applications. © 2017 Elsevier Ltd

Renewable and Sustainable Energy Reviews

A comprehensive review on reduced switch multilevel inverter topologies, modulation techniques and applications

IEEE Transactions on Industry Applications

Control of Reduced-Rating Dynamic Voltage Restorer With a Battery Energy Storage System

IEEE Transactions on Applied Superconductivity

Comparison of Superconducting Fault Current Limiter and Dynamic Voltage Restorer for LVRT Improvement of High Penetration Microgrid

IEEE Transactions on Energy Conversion

Nonlinear Control-Based Modified BFCL for LVRT Capacity Enhancement of DFIG-Based Wind Farm

Electric Power Systems Research

Enhanced crowbarless FRT strategy for DFIG based wind turbines under three-phase voltage dip

Improved fault ride through capability of DFIG based wind turbines using synchronous reference frame control based dynamic voltage restorer

Journal	Data powered by TypesetISA Transactions
Publisher	Data powered by TypesetElsevier BV
ISSN	0019-0578
Open Access	0