scholarly journals Comparative study of Different Topologies of Solar Photovoltaic fed Impedance-Source Inverter based Dynamic Voltage Restorer

2021 ◽  
Vol 9 ◽  
Author(s):  
Miska Prasad ◽  
◽  
Almoataz Youssef Abdelaziz ◽  
Ashok Kumar Akella ◽  
◽  
...  
Keyword(s):  
Solar System ◽  
Comparative Study ◽  
Voltage Sag ◽  
Solar Photovoltaic ◽  
Nonlinear Loads ◽  
Dynamic Voltage Restorer ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Voltage Swell

All customers require quality voltage, quality current and quality power from the utility, but usage of nonlinear loads generates voltage sag, swell and harmonics. This work examines the solar energy based various topologies like 3-Leg, 4-Leg, and 6-Leg Dynamic Voltage Restorer (DVR) for minimizing the voltage swell. To get most prominent power from the solar system Perturb & Observe (P&O) scheme is also used. The most famous topologies are approved utilizing MATLAB/SIMULINK programming to limiting voltage swell. The gained results are comparable nonetheless even possibly better in 6-leg PV-ZSI-DVR diverged from 3-leg and 4-leg PV-ZSI based DVRs.

Design of Z-Source Inverter-Based Dynamic Voltage Restorer Circuitry with R-SOGI Control Scheme for Enrichment of Power Quality

2021 ◽  
pp. 2150195
Author(s):  
A. Sathik Basha ◽  
M. Ramasamy
Keyword(s):  
Power Quality ◽  
Power Distribution ◽  
Distribution System ◽  
Voltage Sag ◽  
Nonlinear Loads ◽  
Dynamic Voltage Restorer ◽  
Power Distribution System ◽  
Voltage Restorer ◽  
Control Scheme ◽  
Dynamic Voltage

Increased utilization of nonlinear loads in the power distribution system with profound integration of renewable energy requires improved power quality control. This paper proposes a Reformed Second Order Generalized Integrated (R-SOGI) control scheme for enhancing the output of the Dynamic Voltage Restorer (DVR) for the objective of achieving the desired sinusoidal voltage wave shape at the common point of services and harmonic reduction. The DVR incorporates a Solar Photovoltaic (SPV) system using the Z-source Inverter (ZSI), providing the necessary active power to mitigate the voltage sag/swell and power demand. ZSI offers step-down as well as step-up abilities, it makes the converters to operate in the conditions of shoot-through. Therefore, the application of ZSI-based DVR topology seems very promising. The compensating reference voltage is generated by the R-SOGI algorithm, which offers superior output under conditions for grid voltage irregularities, including voltage sag/swell and unbalanced and distorted utility grid voltages. In comparison to DVR based on the VSI voltage inverter (VSI), the response from ZSI-DVR to a reduction of voltage distortions and harmonics is investigated. An experimental SPV ZSI-DVR prototype is developed in the laboratory to check the effectiveness of the controller and is tested under balanced and unbalanced supply and dynamic load conditions.

A Novel Control Strategy for Compensation of Voltage Quality Problem in AC Drives

2018 ◽  
Vol 9 (1) ◽  
pp. 8
Author(s):  
Syed Suraya ◽  
P. Sujatha Sujatha ◽  
Bharat Kumar P
Keyword(s):  
Power System ◽  
Control Strategy ◽  
Electrical Machine ◽  
Dynamic Voltage Restorer ◽  
Ac Drives ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Power Switches ◽  
Dynamic Voltage ◽  
Voltage Swell

This paper presents a novel control strategy for the compensation of voltage quality issues in power system networks with AC drives. Voltage quality is one of the key parameter for power engineers and to deliver the power with good quality should be given at most priority. Voltage quality mitigation in power system network is done by employing dynamic voltage restorer (DVR). DVR consists of power switches and power switches are to be controlled. DVR in this paper is controlled using a novel control strategy. A novel control strategy can effectively control DVR by improving voltage quality reducing the adverse effects of voltage sag and voltage swell in power system networks. The paper presents the DVR controlled with novel control strategy for electrical machine (induction motor) drive load application.

Mitigation of Voltage Sag And Voltage Swell By Dynamic Voltage Restorer

2019 ◽  
Author(s):  
Pujarchana Swain ◽  
Basanta K. Panigrahi ◽  
Rama Prasanna Dalai ◽  
Jyotiranjan Mohnaty ◽  
Sidhanta S. Medinray ◽  
...  
Keyword(s):  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Voltage Swell

scholarly journals Contemporary Control of DG Integrated DVR for Sag, Swell and Harmonic Mitigation

2018 ◽  
Vol 8 (5) ◽  
pp. 2721
Author(s):  
Syed Suraya ◽  
P. Sujatha ◽  
P. Bharat Kumar
Keyword(s):  
Control Strategy ◽  
Voltage Source ◽  
Voltage Sag ◽  
Voltage Source Converter ◽  
Voltage Profile ◽  
Pv System ◽  
Dynamic Voltage Restorer ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Dynamic Voltage

This paper presents a novel control strategy to control DG integrated DVR (dynamic voltage restorer) for mitigation voltage quality problems. Power quality is the most concerning areas in power engineering and voltage quality is of prime focus. Voltage sag, voltage swell and harmonics in voltage causes deterioration in quality of voltage delivered to load. A minor disturbance in voltage profile can degrade the performance of load. Dynamic voltage restorer is a quick responsive custom power device for voltage quality improvement. Photovoltaic (PV) system is considered as DG and output voltage of PV system is boosted with a boost converter to support voltage source converter of DVR. DG integrated DVR with novel control strategy for mitigation of voltage sag, swell and voltage harmonic is presented in this paper. The power system model with DG integrated DVR is developed and results are obtained using MATLAB/SIMULINK. Results are discussed during pre and post sag/swell condition with compensation and THD in voltage is maintained within nominal values.

Review on AC-AC Converter Based Dynamic Voltage Restorer

2016 ◽  
Vol 2 (2) ◽  
pp. 297 ◽  
Author(s):  
Tamilvanan G. ◽  
Mahendran S.
Keyword(s):  
Power Systems ◽  
Power Quality ◽  
Voltage Sag ◽  
Dynamic Voltage Restorer ◽  
Quality Issue ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Voltage Swell ◽  
The Common ◽  
Ac Converters

<p>The maintain power quality is one of the major part of all kind of industry as well as power systems. Voltage sag and voltage swell the common power quality issue. The Dynamic Voltage Restorer is the common Device which is used to mitigate the above problems. In this paper provides review on various type of AC-AC converter based DVR. The use of AC-AC converter can compensate the voltage sag and swell without need of any kind of storage elements like capacitor and batteries. The absence of storage elements can reduce size and weight of the DVR. The feature various type of AC- AC converters based DVR is concentrated in this paper.</p>

scholarly journals DVR with Modified Y Source Inverter and MCFC

2019 ◽  
Vol 9 (1) ◽  
pp. 3803-3806 ◽  
Author(s):  
J. Chakravorty ◽  
G. Sharma
Keyword(s):  
Power System ◽  
Power Quality ◽  
Molten Carbonate Fuel Cell ◽  
Voltage Sag ◽  
Molten Carbonate ◽  
Dynamic Voltage Restorer ◽  
Proposed Model ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Voltage Swell

Power quality is a big challenge nowadays. Various disturbances present in the power system are voltage sag, voltage swell, harmonics, transients, interruptions, voltage collapse etc. To solve the problem of power quality, various custom power devices are generally used in a power system, dynamic voltage restorer (DVR) being one of them. DVR is used for the compensation of voltage sag and swell. In this paper, a model of DVR with molten carbonate fuel cell (MCFC) and Y source inverter is proposed. The proposed model is compared with the existing ones to check its performance characteristics. MATLAB/SIMULINK was been used to check and compare the performance of the proposed with existing models.

scholarly journals Grid-Connected Rectifier Based Dynamic Voltage Restorer To Improve Power Quality By Compensating Voltage Sag And Swell

2021 ◽  
Vol 309 ◽  
pp. 01108
Author(s):  
Someshwara Thota ◽  
Vinay Kumar Awaar ◽  
Praveen Jugge ◽  
S Tara Kalyani
Keyword(s):  
Power Quality ◽  
Power Distribution ◽  
Distribution System ◽  
Voltage Sag ◽  
Current Loop ◽  
Dynamic Voltage Restorer ◽  
Power Distribution System ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Voltage Swell

Voltage sag and voltage swell are frequently occurred power quality problems in present power distribution system, which are cause more problems to avoid these problems and maintain constant voltage at sensitive load during sag and swell Dynamic voltage restorer gives solution .we propose self-supported DVR, to minimize the cost by preventing external dc source in DVR, it is controlled by SRF PI control along with an inner current loop to stabilize the system and outer voltage loop to increase the system robustness. The proposed model provides fast voltage restoration for a short and long duration of voltage sags and swells manage wide load current variation for short and long voltage disturbances. In this paper, we present the effectiveness of the proposed method by using MATLAB/simulation results. A laboratory prototype DVR is modelled and we are using CCS studio to interface DSPTMS320F28027F

scholarly journals Influence of DVR on Adjacent Load and Its Compensation Strategy Design Based on Externality Theory

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3716 ◽  
Author(s):  
Du ◽  
Chen ◽  
Dai ◽  
Javed ◽  
Shao ◽  
...  
Keyword(s):  
Voltage Sag ◽  
Equivalent Network ◽  
Compensation Strategy ◽  
Dynamic Voltage Restorer ◽  
Voltage Quality ◽  
Voltage Change ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Compensation Device ◽  
Strategy Design

Dynamic voltage restorer (DVR) is a compensation device that can effectively improve power quality, and it is widely used to compensate the voltage sag on sensitive loads. However, DVR will affect the operation of the sensitive loads in parallel at the same busbar (such parallel are defined as adjacent loads) in the process of improving sensitive load voltage quality. With the externality theory, this paper proposes a solution to clarify the influence of DVR on the adjacent load and handle the possible controversy. This paper first establishes a simple system that consists of a DVR, sensitive loads, and adjacent loads. Based on the equivalent network, the influence of the DVR on the adjacent load is analyzed in terms of voltage change and power consumed. The externality boundaries are clearly defined when considering network parameters in order to fairly deal with the interaction of multi entities. Afterwards, an optimization compensation strategy that is based on externality theory is proposed. Finally, the simulation on compensation strategy is tested on the MATLAB/Simulink platform to demonstrate the feasibility and effectiveness of the proposed method.

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