Diagnostic Testing and Condition Monitoring of Transformers
Active Power Filter
Associate Professor, Indian Institute of Technology, Gandhinagar, (Nov 2015 to present)
Assistant Professor, Indian Institute of Technology, Gandhinagar, (May 2009 - Nov 2015)
Research Engineer, GE India Technology Centre Pvt. Ltd., (Dec 2007 - Feb 2009)
IP Analyst , GE India Technology Centre Pvt. Ltd., (Jan 2007 - Nov 2007)
Selected Recent Publications
E. Naveen Kumar, V. Naveen Deepak and K. Ragavan, “A Compact Expression for Cogging Torque Considering Both Radial and Tangential Fields for Surface-Mounted PM Motors”, IEEE Transactions on Magnetics, Vol. 54, No. 9, pp. 1-12, Sep. 2018.
Shah Krupa R and Ragavan K, “Assessing Mechanical Deformations in Two-Winding Transformer Unit using Reduced-Order Circuit Model”, International Journal of Electrical Power and Energy Systems (Elsevier), Vol. 79, pp. 235-244, Jul. 2016.
Chandrasekaran S and Ragavan K, “Rapid Tracking of Grid Variables Using Prefiltered Synchronous Reference Frame PLL”, IEEE Transactions on Instrumentation and Measurement, Vol. 64, No. 7, pp. 1826-1836, Jul. 2015.
Chandrasekaran S and Ragavan K, “Single-Phase Grid Voltage Attributes Tracking For the Control of Grid Power Converters”, IEEE Journal of Emerging and Selected Topics in Power Electronics, Vol. 2, No. 4, pp. 1041-1048, Dec. 2014.
Prabhakar R. J. and Ragavan K, “STATCOM-based Wind-Solar-Hydro Electric Power System with Modified Real and Reactive Power Controls”, International Journal of Emerging Electric Power Systems, Vol. 15, no. 1, Jan. 2014.