Half‐cascaded multilevel inverter coupled to photovoltaic power source for AC‐voltage synthesizer of dynamic voltage restorer to enhance voltage quality

2021 ◽  
Author(s):  
Ali Darvish Falehi
Keyword(s):  
Power Source ◽  
Multilevel Inverter ◽  
Dynamic Voltage Restorer ◽  
Photovoltaic Power ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Dynamic Voltage ◽  
Cascaded Multilevel Inverter

scholarly journals Symmetrical Multilevel Inverter based TDVR for Voltage Quality Enhancement

2019 ◽  
Vol 8 (3) ◽  
pp. 3887-3893
Keyword(s):  
Real Time ◽  
Harmonic Distortion ◽  
Multilevel Inverter ◽  
Dynamic Voltage Restorer ◽  
Load Voltage ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Sinusoidal Waveform ◽  
Filter Size ◽  
Dynamic Voltage

This Article Presents Symmetrical Multilevel Inverter With Reduced Number Of Switches Based Transformer Less Dynamic Voltage Restorer (SMLI-TDVR) For Voltage Quality (VQ) Enhancement. Reduction Of Transformer From Conventional Voltage Restorer Leads To Increase In Size Of Passive Filters, Which Can Even Reduce By Using Presented SMLI-TDVR. Reduced Filter Size And Less Load Voltage Total Harmonic Distortion Are The Added Advantage Of SMLI-TDVR. The Control Scheme Provides Switching Pulses For Closed Loop Operation Of SMLI-TDVR To Maintain Load Voltage Constant. Real Time Implementation Of Controller Is Done By Utilizing FPGA Based Real-Time Simulator Called OP4500, A Product Of OPAL-RT. Real Time Testing Of SMLI-TDVR Is Carried Out By Power Hardware In Loop Testing Method (P-HIL). Results Of P-HIL Testing Prove That SMLI-TDVR Can Able To Compensate VQ Problems To Make Load Voltage Constant With Smooth Sinusoidal Waveform.

scholarly journals Protection of Sensitive Loads in Distribution Systems Using a BSFCL-DVR System

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1615
Author(s):  
Mehdi Firouzi ◽  
Saleh Mobayen ◽  
Hossein Shahbabaei Kartijkolaie ◽  
Mojtaba Nasiri ◽  
Chih-Chiang Chen
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Fault Current ◽  
Dynamic Voltage Restorer ◽  
Voltage Quality ◽  
Voltage Restorer ◽  
Point Of Common Coupling ◽  
Dynamic Voltage ◽  
Bridge Type ◽  
In The Beginning

In this paper, an incorporated bridge-type superconducting fault current limiter (BSFCL) and Dynamic Voltage Restorer (DVR) is presented to improve the voltage quality and limiting fault current problems in distribution systems. In order to achieve these capabilities, the BSFCL and DVR are integrated through a common DC link as a BSFCL-DVR system. The FCL and DVR ports of the BSFCL-DVR system are located in the beginning and end of the sensitive loads’ feeder integrated to the point of common coupling (PCC) in the distribution system. At first, the principle operation of the BSFCL-DVR is discussed. Then, a control system for the BSFCL-DVR system is designed to enhance the voltage quality and limit the fault current. Eventually, the efficiency of the BSFCL-DVR system is verified through the PSCAD/EMTDC simulation.

scholarly journals Adoption of Multilevel Inverter based Dynamic Voltage Restorer for Power Quality Improvement with Adjustable DC-Link

2020 ◽  
Vol 184 ◽  
pp. 01055
Author(s):  
Kummari Geethika ◽  
Vinay Kumar Awaar ◽  
Praveen Jugge
Keyword(s):  
Power Distribution ◽  
Electrical Power ◽  
Current Source ◽  
Multilevel Inverter ◽  
Voltage Sag ◽  
Voltage Profile ◽  
Frequency Method ◽  
Dynamic Voltage Restorer ◽  
Voltage Restorer ◽  
Dynamic Voltage

Dynamic Voltage Restorer (DVR) is a method of overcoming voltage sag and swell in electrical power distribution. To boost up voltage levels on load side on power disturbances DVR can be used so as the equipment connected will have good voltage profile In this Pulse Width Modulation inverter is in solid-state electronic switching device were employed along with Integrated Gate Bipolar Transistor by the DVR, the alternating current voltage is controllable at real and reactive powers which are made independently. The MLI; is organized as the cascaded H-bridge inverter units. The function of Multilevel Inverter; is to arrange the voltages from a significant direct current source. Here in the DVR, there is no need for external output filters. In the planned DVR, a dc-dc converter is combined with an MLI. By considering the voltage sag magnitude of a dc-dc converter can regulate the dc-link voltage. Hence the output voltage of the multilevel inverter; always has a last number of levels. Instead of using the PWM based technique, the fundamental frequency method can be used in the multilevel inverter. The proposed DVR operation range of mathematical analysis is specified in detail. The simulation results are prepared by using Simulink/MATLAB.

scholarly journals Simplified Four-Level Inverter-Based Dynamic Voltage Restorer With Single DC Power Source

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 137461-137471 ◽  
Author(s):  
Jian Ye ◽  
Hoay Beng Gooi ◽  
Xinan Zhang ◽  
Benfei Wang ◽  
Josep Pou
Keyword(s):  
Power Source ◽  
Dynamic Voltage Restorer ◽  
Dc Power ◽  
Voltage Restorer ◽  
Dynamic Voltage
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