scholarly journals Current Injection Control Scheme of Voltage Sag Compensation by Parallel Type Compensator with Series Inductor

2006 ◽  
Vol 126 (10) ◽  
pp. 1382-1391 ◽  
Author(s):  
Sumate Naetiladdanon ◽  
Yushi Miura ◽  
Toshifumi Ise
Keyword(s):  
Current Injection ◽  
Voltage Sag ◽  
Control Scheme ◽  
Injection Control ◽  
Series Inductor ◽  
Parallel Type

Design of a 1-kVA parallel-type AC voltage sag compensator

2012 ◽  
Vol 5 (5) ◽  
pp. 591 ◽  
Author(s):  
H.-C. So ◽  
Y.-S. Lee ◽  
M.H.L. Chow
Keyword(s):  
Voltage Sag ◽  
Parallel Type

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.

scholarly journals DESIGN AND SIMULATION STUDIES OF D-STATCOM FOR VOLTAGE SAG, SWELL MITIGATION

2013 ◽  
pp. 169-175
Author(s):  
D.R. PATIL ◽  
KOMAL K. MADHALE
Keyword(s):  
Distribution System ◽  
Voltage Source ◽  
Voltage Sag ◽  
Voltage Source Converter ◽  
Voltage Sags ◽  
Simulation Studies ◽  
Control Scheme ◽  
Static Compensator ◽  
A Current

This paper presents the design of a prototype distribution static compensator (DSTATCOM) for voltage sag mitigation in an unbalanced distribution system. The D-STATCOM is intended to replace the widely used static Var compensator (SVC). The model is based on the Voltage Source Converter (VSC) principle. A new PWM based control scheme has been implemented to control the electronic valves in two level of VSC. The D-STATCOM injects a current into the system to mitigate the voltage sags. In this work, the 6-pulse D-STATCOM configuration with IGBT has been designed using MATLAB SIMULINK. Accordingly, simulations are first carried out to illustrate the use of D-STATCOM in mitigating voltage sag in a distribution system. Simulation results prove that the D-STATCOM is capable of mitigating voltage sag as well as improving power quality of a system.

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