Design of seven level Dynamic Voltage Restorer for voltage sag and harmonics mitigation

K. Chandrasekaran, V. K. Ramachandaramurthy

Research output: Contribution to journalConference article


The power quality disturbance in a power distribution network was voltage sag and swell and voltage harmonic. New ideas, methods and techniques had been introduced by researchers to improve the quality of supply particularly at the sensitive load end. Many of these methods have their own drawbacks such as complexity, slow response and sensitivity to parameter variations. In this research, an improved Dynamic Voltage Restorer (DVR) topology has been designed and modeled to be used on a 415 Volts distribution network. A seven level cascaded multilevel inverter using multicarrier SPWM technique controller was proposed to handle the voltage imperfections. An innovative controller based on the Synchronous Rotating Reference Frame (SRRF) to overcome the disadvantages of the existing controller schemes by reducing the complexity, number of signal measurements and computing time has been developed. The controller was able to control the zero sequence voltage during unbalance fault period. The switching frequency of the phase shift SPWM was low and hence, the switching loss was low. The Total Harmonic Distortion (THD) with the proposed DVR was significantly reduced to 1.64 % as compared to other traditional models and was within the IEEE Standards 519-2014. The proposed controller algorithm provides excellent voltage compensation.

Original languageEnglish
Pages (from-to)1614-1622
Number of pages9
JournalProceedings of the International Conference on Industrial Engineering and Operations Management
Issue numberMAR
Publication statusPublished - 01 Jan 2019
Event9th International Conference on Industrial Engineering and Operations Management, IEOM 2019 - Bangkok, Thailand
Duration: 05 Mar 201907 Mar 2019

All Science Journal Classification (ASJC) codes

  • Strategy and Management
  • Management Science and Operations Research
  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering

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