Control of dynamic voltage restorer for injecting active power using synchronous reference frame theory

2015 ◽  
Author(s):  
J. Kohila ◽  
S. Kannan ◽  
V. Suresh Kumar
Keyword(s):  
Reference Frame ◽  
Active Power ◽  
Frame Theory ◽  
Dynamic Voltage Restorer ◽  
Synchronous Reference Frame ◽  
Voltage Restorer ◽  
Dynamic Voltage

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

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.

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

2005 ◽  
Vol 2 (2) ◽  
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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