Symmetrical Multilevel Inverter based TDVR for Voltage Quality Enhancement
Mohanasundaram Ravi1, Chendur Kumaran.R2

1Mohanasundaram Ravi, School of Electrical Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu, India.
2Chendur Kumaran.R, Associate Professor with School of Electrical
Engineering, Vellore Institute of Technology, Chennai, Tamil Nadu, India.

Manuscript received on 01 August 2019. | Revised Manuscript received on 06 August 2019. | Manuscript published on 30 September 2019. | PP: 3887-3893 | Volume-8 Issue-3 September 2019 | Retrieval Number: C5110098319/2019©BEIESP | DOI: 10.35940/ijrte.C5110.098319
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Abstract: 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. Keywords: Power Quality (PQ), Voltage compensation, Dynamic Voltage Restorer (DVR), Multilevel Inverter (MLI) , Power Hardware in Loop (P-HIL), OPAL-RT
Scope of the Article:
Quality Control