scholarly journals A Two-Grid Interline Dynamic Voltage Restorer Based on Two Three-Phase Input Matrix Converters

2021 ◽  
Vol 11 (2) ◽  
pp. 561
Author(s):  
Sergio Constantino Yáñez-Campos ◽  
Gustavo Cerda-Villafaña ◽  
José Merced Lozano-García
Keyword(s):  
Reference Frame ◽  
Pulse Width ◽  
Pulse Width Modulation ◽  
Voltage Sag ◽  
Input Matrix ◽  
Dynamic Voltage Restorer ◽  
Matrix Converters ◽  
Voltage Restorer ◽  
Three Phase ◽  
Dynamic Voltage

Energy quality problems can cause diverse failures of sensitive equipment. Dynamic voltage restorers (DVRs) are devices that have been proposed to protect sensitive loads from voltage sag effects. However, the compensation capacity of DVRs is limited by the amount of energy stored in the restorer. One way to overcome this limitation is to use the interline DVR (IDVR) structure in which two or more DVRs connected to different feeders share a common DC-link. This paper proposes a new IDVR topology based on two three-phase input matrix converters (TTI-MC) without a capacitor in the dc-link. The TTI-MC integrates the power from two feeders and synthesizes the dc-link voltage. The inverters take the dc-link voltage and generate the appropriate compensation voltages to keep the load voltages stable. Each one of the inverters has its own modulation algorithm which are synchronized with the TTI-MC control. Inverter control is carried out in the reference frame dq and a modified space vector pulse width modulation (MSV-PWM) technique is used. TTI-MC control is performed in the dq reference frame with proportional-integral controllers and the modulation is based on the carrier-based pulse width modulation (MCB-PWM) technique. The proposed Two Input Interline DVR (TI-IDVR) extends its compensation range and has multifunctional capabilities. The efficiency of the proposed TI-IDVR is corroborated by simulations on MATLAB/Simulink.

scholarly journals Enhancing the power of quality issues using superconducting magnetic storage devices–based dynamic voltage restorer–aided switched coupled inductor inverter with space vector pulse width modulation techniques

2019 ◽  
Vol 52 (9-10) ◽  
pp. 1329-1343 ◽  
Author(s):  
P Sivaperumal ◽  
Subranhsu Sekhar Dash ◽  
K Saravanan
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Discrete Wavelet ◽  
Magnetic Storage ◽  
Dynamic Voltage Restorer ◽  
Storage Devices ◽  
Voltage Restorer ◽  
Modulation Techniques ◽  
Dynamic Voltage ◽  
Magnetic Storage Devices

This paper emphasizes on proposing a dynamic voltage restorer–based superconducting magnetic storage devices have utilized to power quality issues. Dynamic voltage restorer can be used for different topologies of the inverter. The conventional topology of dynamic voltage restorer possessing voltage source inverter or Z-source inverter is modified into a switched coupled inductor inverter which has the clear edge in power transfer over the former. The versatility of the controller is enhanced by this work by deploying a fuzzy combine discrete wavelet transforms. The proposed system in this paper, switched coupled inductor inverter–based dynamic voltage restorer-superconducting magnetic storage devices on mitigating the interruption, harmonics and voltage sag/swell. The operating of switched coupled inductor inverter has buck/boost function capability and reduced number of passive components. Due to digitalization, higher utilization factor and reduced harmonic content, controller of fuzzy logic–space vector pulse width modulation techniques with filter application of discrete wavelet transform is used to operate of switched coupled inductor inverter. The hysteresis controller is used to perform the superconducting magnetic storage devices device, has the ability in the storage of real power with high energy density and protects the consumer from grid fluctuation. To detect the power quality disturbances quickly response and improve the compensation capability of dynamic voltage restorer-superconducting magnetic storage devices. The whole of the suggested system is simulated in MATLAB/Simulink and realized as a prototype whose control pulses are duly generated and fed by dSPACE 1104 controller.

scholarly journals Improved Analysis of DVR Performance for Voltage Sag Mitigation

2018 ◽  
Vol 17 (3) ◽  
pp. 36-40
Author(s):  
Hannah Naqiah Abdul Razak ◽  
Dalila Mat Said ◽  
Nasarudin Ahmad
Keyword(s):  
Power System ◽  
Power Distribution ◽  
Load Condition ◽  
Voltage Sag ◽  
Voltage Sags ◽  
Dynamic Voltage Restorer ◽  
Power Distribution System ◽  
Voltage Restorer ◽  
Three Phase ◽  
Dynamic Voltage

Dynamic Voltage Restorer (DVR) provides the most reliable solution to the voltage quality problem in power distribution system from the effectiveness of DVR performance for voltage sag mitigation. As a custom power device, DVR offers the best solution to three phase power system in order to improve the power quality issue as the magnitude and phase of the voltage is added during the sags occurrence to restore the load condition to compensate the voltage sags. The suitable controller, Proportional-Integral (PI) Controller is used along with the Pulse Width Modulation (PWM)-based control scheme to calculate the exact error and generate the missing voltage to be injected to the three-phase power system through injection transformers. Simulation results of various fault types using MATLAB/SIMULINK are shown in this paper to demonstrate the successful compensation of voltage sags by mitigation technique using Dynamic Voltage Restorer in three-phase power distribution. 

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.

scholarly journals Compensador série de tensão em onda quadrada para mitigação de afundamentos de tensão

2012 ◽  
Vol 23 (2) ◽  
pp. 164-178 ◽  
Author(s):  
Igor Amariz Pires ◽  
Braz de Jesus Cardoso Filho ◽  
Sidelmo Magalhães Silva
Keyword(s):  
Pulse Width ◽  
Pulse Width Modulation ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage

Compensadores Série de Tensão (CST) são utilizados para mitigação de fenômenos de qualidade da energia elétrica relacionados a distúrbios na tensão. Os mais conhecidos en-TM tre os CSTs são o DVR (Dynamic Voltage Restorer) e o TM DySC (Dynamic Sag Corrector), utilizados para proteção de cargas elétricas sensíveis a afundamentos de tensão. A tensão injetada pelo restaurador é senoidal, sintetizada através de um inversor em ponte-H modulado em alta frequência por PWM (Pulse Width Modulation), em conjunto com um filtro de saída senoidal. Considerando a duração típica dos afundamentos da ordem de centenas de milisegundos, este artigo propõe a implementação de um CST com injeção de tensão em onda quadrada, sendo incluídos, ainda, aspectos relativos à estratégia de controle para injeção de tensão. Resultados experimentais mostram a eficácia da injeção em onda quadrada na proteção de cargas eletrônicas

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