New Control Technique Applied in Dynamic Voltage Restorer for balanced and unbalanced Voltage Sag /swell

In this paper, latest technology is introduced in substitution to conventional voltage and current type inverter with Transformer based impedance (Z) source inverter in voltage sag assessment and mitigation and compared with voltage source inverter based dynamic voltage restorer. Transformer based impedance source inverters (Trans-Z source inverters) are newly proposed inverters that can be used to overcome downside of voltage source inverter, current source inverter and impedance source (Z-source) inverter. T-Z source inverter consists of transformer with high frequency and low leakage inductance along with low reactive component compared with conventional Z source inverter. In case of T-Z source inverter, voltage stress throughout Z-source capacitor is reduced along with inrush current limitation at startup. This paper presents modeling of T-Z source inverter based dynamic voltage restorer using MATLAB/SIMULINK software along with its THD analysis which is compared with VSI based dynamic voltage restorer. Here abc to dq0 control algorithm is employed. The control technique which is employed for simulation shows excellent results for voltage sag and swell compensation.

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An Optimum UPQC with Minimum VA Requirement and Mitigation of Unbalanced Voltage Sag

International Journal of Emerging Electric Power Systems ◽

10.2202/1553-779x.1041 ◽

2005 ◽

Vol 2 (2) ◽

Cited By ~ 3

Author(s):

Y. Y. Kolhatkar ◽

S. P. Das

Keyword(s):

Active Power ◽

Voltage Sag ◽

Dynamic Voltage Restorer ◽

Active Power Filters ◽

Power Filters ◽

Voltage Restorer ◽

Unbalanced Voltage ◽

Dynamic Voltage ◽

Simulation Results ◽

Power Quality Conditioner

The paper deals with an optimized Unified Power Quality Conditioner (UPQC), which aims at the integration of series active and shunt active power filters with minimum VA loading of the UPQC. The series active filter is a Dynamic Voltage Restorer (DVR), which is operated in twofold functioning mode. During the unbalanced voltage sag, the DVR compensates the unbalance in the voltage sag. It also regulates the voltage at the load end with minimum VA loading of the overall UPQC by optimum angle voltage injection. Validity of the proposed scheme is proved through extensive simulation results.

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Performance of PI Controller Based Dynamic Voltage Restorer for Power Quality Improvement

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.818.52 ◽

2016 ◽

Vol 818 ◽

pp. 52-57 ◽

Cited By ~ 1

Author(s):

Faridullah Kakar ◽

Abdullah Asuhaimi bin Mohd Zin ◽

Mohd Hafiz bin Habibuddin

Keyword(s):

Power Quality ◽

Power Distribution ◽

Distribution System ◽

Control Technique ◽

Voltage Sag ◽

Pi Control ◽

Dynamic Voltage Restorer ◽

Power Distribution System ◽

Voltage Restorer ◽

Dynamic Voltage

Voltage sag and harmonics are the most frequent power quality problems faced by industrial and commercial customers today. Situation has been aggravated by modern sensitive industrial equipments which introduce system harmonics due to their inherent V-I characteristics. In this paper, proportional integral (PI) control technique based dynamic voltage restorer (DVR) is implemented in power distribution system to suppress voltage sag and harmonics under linear, non-linear and induction motor load conditions. Real-time power distribution system and DVR test models are built in Matlab/Simulink software. Simulation results exhibit excellent PI control approach with effective performance yielding excellent voltage regulation.

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Optimum design of dynamic voltage restorer for voltage sag mitigation in distribution network

International Journal of Power Electronics and Drive Systems (IJPEDS) ◽

10.11591/ijpeds.v10.i3.pp1364-1372 ◽

2019 ◽

Vol 10 (3) ◽

pp. 1364

Author(s):

Deshpande V. Chinmay ◽

Deshpande V. Chaitanya

Keyword(s):

Control Technique ◽

Voltage Source ◽

Voltage Sag ◽

Power Electronic ◽

Dynamic Voltage Restorer ◽

Q Theory ◽

Voltage Restorer ◽

Dynamic Voltage ◽

Simulation Results ◽

Inverter Topology

<p><span lang="EN-US">DVR is power electronic based device used for mitigation of voltage sag problem. In this paper, various inverter topologies such as Voltage source inverter, Z source inverter and Embedded Z source inverter are used and compared for operation of DVR. Here dual p-q theory is implemented as control technique which have excellent transient response and speed. Different inverter configurations are implemented for DVR and its simulation results are presented and compared. It has been observed that Embedded EZ source inverter topology is found to be effective. The Embedded EZ source inverter topology and its hardware results are presented and compared.</span></p>

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New Control Technique Applied in Dynamic Voltage Restorer for Voltage Sag Mitigation

American Journal of Engineering and Applied Sciences ◽

10.3844/ajeassp.2010.42.48 ◽

2010 ◽

Vol 3 (1) ◽

pp. 42-48 ◽

Cited By ~ 2

Author(s):

Omar

Keyword(s):

Control Technique ◽

Voltage Sag ◽

Dynamic Voltage Restorer ◽

Voltage Restorer ◽

Dynamic Voltage

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A CONTROL TECHNIQUE FOR INSTANT MITIGATION OF VOLTAGE SAG/SWELL BY DYNAMIC VOLTAGE RESTORER

International Journal of Power System Operation and Energy Management ◽

10.47893/ijpsoem.2014.1118 ◽

2014 ◽

pp. 38-43

Author(s):

ABRARKHAN I. PATHAN ◽

PROF. S. S. VANAMANE

Keyword(s):

Reference Frame ◽

Reference Voltage ◽

Control Technique ◽

Voltage Sag ◽

Dynamic Voltage Restorer ◽

Matlab Simulink ◽

Load Voltage ◽

Synchronous Reference Frame ◽

Voltage Restorer ◽

Dynamic Voltage

This paper presents a control technique using Synchronous Reference Frame (SRF) theory to compensate the voltage sag/swell by using Dynamic Voltage Restorer (DVR). DVR is the best known device for mitigation of voltage sag/swell occurred in the system. Nowadays voltage sag is the most common problem customers are facing repeatedly. There is a need for instant mitigation of voltage sag/swell and maintains the load voltage constant. Some simulations are performed in MATLAB/Simulink and results are discussed to validate this theory for instant calculation of reference voltage and quick mitigation of voltage sag or swell from the system.

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