A Detailed Comparison of System Topologies for Dynamic Voltage Restorers

Nielsen, J.G.; Blaabjerg, Frede

doi:10.1109/tia.2005.855045

Cited by 465 publications

(195 citation statements)

References 7 publications

Supporting

Mentioning

187

Contrasting

Unclassified

Order By: Relevance

“…DVR configurations use the VSC to generate the voltage required to compensate for the voltage sag/swell events [18,19]. Since the majority of the voltage sags/swells observed on distribution systems are unbalanced, the VSC will often be required to operate with unbalanced switching functions for the three phases and must therefore be able to treat each phase independently.…”

Section: Fig 3: Schematic Diagram Of Dvr Configurationmentioning

confidence: 99%

A Fuzzy Logic based Dynamic Voltage Restorer for Voltage Sag and Swell Mitigation for Industrial Induction Motor Loads

Azim¹,

Hoque²

2011

IJCA

View full text Add to dashboard Cite

Power quality has been an issue that is becoming increasingly pivotal in industrial electricity consumers point of view in recent times. Modern industries employ Sensitive power electronic equipments, control devices and non-linear loads as part of automated processes to increase energy efficiency and productivity. Voltage disturbances are the most common power quality problem due to this increased use of a large numbers of sophisticated and sensitive electronic equipment in industrial systems. The Dynamic Voltage Restorer (DVR) has recently been introduced to protect the sensitive industrial loads from the detrimental effects of voltage sags/swells and other voltage disturbances. Configurations and control schemes for the DVR varies depending upon the nature and characteristics of the load to be protected. Industries with induction motors loads require a complete different approach for the design and control of a suitable DVR owing to the inherit inertia of the induction motors and their capability to withstand short-duration, shallow sags/swells, in addition to its tolerance to phase angle jumps. In this paper, a DVR with fast response, simple and efficient controller is proposed for fulfilling the voltage restoration requirements for industrial induction motor loads. The proposed DVR employs the classical Fourier Transform (FT) for sag/swell detection and quantification and a Fuzzy Logic based feedback controller which utilizes the error signal (difference between the reference voltage and actual measured load voltage) to control the triggering of the switches of an inverter using a Sinusoidal Pulse Width Modulation (SPWM) scheme. The proposed DVR utilizes the energy from available supply line feeders through a rectifier to feed the inverter. Modeling and simulation of the proposed DVR is implemented in MATLAB/SIMULINK platform. Simulation results have shown that the proposed DVR was efficient in mitigating balanced, unbalanced, multistage and consecutive sags, as well as swells.

show abstract

Section: Fig 3: Schematic Diagram Of Dvr Configurationmentioning

confidence: 99%

A Fuzzy Logic based Dynamic Voltage Restorer for Voltage Sag and Swell Mitigation for Industrial Induction Motor Loads

Azim¹,

Hoque²

2011

IJCA

View full text Add to dashboard Cite

show abstract

“…In order to resolve the energy problem during compensation, some experts are committed to introducing energy storage devices to the structure of the DVR, such as chemical battery energy storage [3], superconducting energy storage [4] and flywheel energy storage [5]. Other experts have done research on topologies and control strategies utilizing low-voltage DVRs with a three-phase three-wire [6] or a three-phase four-wire [7]. High-voltage DVRs with the neutral-point clamped type [8], flying capacitor type [9] or cascaded type [10] have also been studied.…”

Section: Introductionmentioning

confidence: 99%

Parameter Optimization of the LC filters Based on Multiple Impact Factors for Cascaded H-bridge Dynamic Voltage Restorers

Chen¹,

Zhu²,

Cai³

2014

Journal of Power Electronics

View full text Add to dashboard Cite

The cascaded H-Bridge Dynamic Voltage Restorer (DVR) is used for protecting high voltage and large capacity loads from voltage sags. The LC filter in the DVR is needed to eliminate switching ripples, which also provides an accurate tracking feature in a certain frequency range. Therefore, the parameter optimization of the LC filter is especially important. In this paper, the value range functions for the inductance and capacitance in LC filters are discussed. Then, parameter variations under different conditions of voltage sags and power factors are analyzed. In addition, an optimized design method is also proposed with the consideration of multiple impact factors. A detailed optimization procedure is presented, and its validity is demonstrated by simulation and experimental results. Both results show that the proposed method can improve the LC filter design for a cascaded H-Bridge DVR and enhance the performance of the whole system.

show abstract

“…Several ideas have been reported for compensation or mitigation of voltage disturbances [4][5][6][7][8][9]. However, in all of the voltage sag compensation or voltage sag mitigation methods, voltage sag detection is the first essential part of any voltage sag compensation systems since it has to detect voltage sag incidents as fast and initiate the next compensate processes as possible (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…There are numerous publications that have proposed voltage sag detection methods and they can be grouped as 1) synchronously rotating reference frame(SRRF)-based, or d-q transformation-based voltage sag detections [10][11][12], 2) instantaneous voltage technique-based or missing voltage-based voltage sag detections [13,14], 3) peak voltage evaluation-based voltage sag detections [15,16], 4) rms evaluation-based voltage sag detections [17,18], 5) time-frequency transformation-based voltage sag detections [19,20], 6) rectified voltage-based voltage sag detections [21] and 7) fractal-based voltage sag detections [22,23].…”

Section: Introductionmentioning

confidence: 99%

An Improvement in Synchronously Rotating Reference Frame-Based Voltage Sag Detection under Distorted Grid Voltages

Sillapawicharn¹,

Kumsuwan²

2013

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-This study proposed an improvement in synchronously rotating reference frame-based voltage sag detection under distorted grid voltages. In the past, the conventional synchronously rotating reference frame (CSRRF)-based voltage sag detection was generally used in the voltage sag compensation applications. Its disadvantage is a long delay of detection time. The modified synchronously rotating reference frame (MSRRF)-based voltage sag detection is able to detect the voltage sag with only a short delay in detection time. However, its operation under distorted grid voltage conditions is unavailable. This paper proposed the improvement of modified synchronously rotating reference frame (IMSRRF)-based voltage sag detection for use in distorted grid voltages with very fast operation of voltage sag detection. The operation of the proposed voltage sag detections is investigated via simulations and experimentations to verify the performance of the IMSRRF-based voltage sag detection.

show abstract

A Detailed Comparison of System Topologies for Dynamic Voltage Restorers

Cited by 465 publications

References 7 publications

A Fuzzy Logic based Dynamic Voltage Restorer for Voltage Sag and Swell Mitigation for Industrial Induction Motor Loads

A Fuzzy Logic based Dynamic Voltage Restorer for Voltage Sag and Swell Mitigation for Industrial Induction Motor Loads

Parameter Optimization of the LC filters Based on Multiple Impact Factors for Cascaded H-bridge Dynamic Voltage Restorers

An Improvement in Synchronously Rotating Reference Frame-Based Voltage Sag Detection under Distorted Grid Voltages

Contact Info

Product

Resources

About