### List of Publications – Journal

- Extending the Linear Modulation Range to the Full Base Speed Using a Single DC Link Multilevel Inverter with Capacitor Fed H-Bridges for IM drives;Arun R. S.; Sumit Pramanick; R.S. Kaarthik; K. Gopakumar; Frede Blaabjerg,
**accepted IEEE Transactions on Power Electronics,Year: 2016, Volume: PP, Issue: 99,2016**

- Low Switch Count Nine Level Inverter Topology for Open End Induction Motor Drives; A. Kshirsagar; R. S. Kaarthik; K. Gopakumar; L. Umanand; K. Rajashekara,
**accepted IEEE Transactions on Industrial Electronics,Volume PP, Issue:99,2016**

- A Predictive Capacitor Voltage Control of a Hybrid Cascaded Multilevel Inverter With a Single DC link and With Reduced Common Mode Voltage Operation; Arun Rahul S; Sudharshan Kaarthik; K. Gopakumar; Leopoldo G. Franquelo; Jose I. Leon..
**accepted IEEE Transactions on Industrial Electronics,Volume PP, Issue:99,2016**

- Extended Linear Modulation Operation of a Common Mode Voltage Eliminated Cascaded Multilevel Inverter with a Single DC supply; Arun Rahul S; Sumit Pramanick; Mathews Boby; K. Gopakumar; Leopoldo G. Franquelo ..
**accepted IEEE Transactions on Industrial Electronics,Volume PP, Issue:99,2016**

- A Harmonic Suppression Scheme for Full Speed Range of a Two Level Inverter Fed Induction Motor Drive using Switched Capacitive Filter; Sumit Pramanick; Sudharshan Kaarthik; Najath Abdulazeez; K. Gopakumar; Sheldon Williamson; Kaushik Rajashekara..
**accepted IEEE Transactions on Power Electronics,Volume PP, Issue:99,2016**

- Generation of Higher Number of Voltage Levels by Stacking Inverters of Lower Multilevel Structures with Low Voltage Devices for Drives ; Viju Nair R., Arun Rahul S., Kaarthik S., Kshirsagar A. and Gopakumar K..
**accepted IEEE Transactions on Power Electronics,Volume PP, Issue:99,2016**

- Fifth and Seventh Order Harmonic Elimination with Multilevel Dodecagonal Voltage Space Vector Structure for IM Drive Using a Single DC Source for the Full Speed Range ; Boby M., Pramanick S., Kaarthik S., Rahul S.A., Umanand L. and Gopakumar K..
**accepted IEEE Transactions on Power Electronics,Volume PP, Issue:99,2016**

- A 3-Level Dodecagonal Space Vector based Harmonic Suppression Scheme for Open-End Winding IM Drives with Single DC Supply ; Pramanick S., Boby M., Najath Abdul Azeez, Gopakumar K. and Williamson S..
**accepted IEEE Transactions on Industrial Electronics,Volume PP, Issue:99,2016**

- Multilevel Dodecagonal Voltage Space Vector Structure Generation for Open-end Winding IM using a Single DC Source ; Boby M.,Pramanick S., Kaarthik S., Rahul S. A., Umanand L. and K. Gopakumar..
**accepted IEEE Transactions on Industrial Electronics,Volume PP, Issue:99,2016**

- Timing calculations for a general N-level dodecagonal space vector structure using only reference phase voltages; R. Sudharshan Kaarthik, K. Gopakumar, Carlo Cecati and Istvan Nagy..
**IEEE Transactions on Industrial Electronics,Volume-63, 1395-1403, Issue:3, 2016**

- Reduced common-mode voltage operation of a new seven-level hybrid multilevel inverter topology with a single DC voltage source ; Arun Rahul Sanjeevan, R. Sudharshan Kaarthik, K. Gopakumar, P.P. Rajeevan, Jose I. Leon, Leopoldo G. Franquelo..
**accepted IET Transactions on Power Electronics, 2015**

- A Voltage Space Vector Diagram formed by Ninteen Concentric Do decagons for Medium Voltage Induction Motor Drives. Sudharshan Kaarthik ; Gopakumar, K. ; Cecati, C; Istvan nagy.
**accepted IEEE Transactions on Industrial Electronics, Volume-62, 6748-6755, Issue:11, 2015″,**

- Low Order Harmonic Suppression for Open-end Winding IM with Dodecagonal Space Vector using a Single DC-link Supply. Pramanick, S. ; Abdul Azeez, N. ; Kaarthik, S. ; Gopakumar, K. ; Cecati, C..
**accepted IEEE Transactions on Industrial Electronics, Volume 62, 5340-5347, Issue:9, 2015**

- Medium Voltage Drive for Induction Machine with Multilevel Dodecagonal Voltage Space Vectors with Symmetric triangles. Sudharshan Kaarthik; Gopakumar, K; Mathew, J. ; Undeland, T.
**IEEE Transactions on Industrial Electronics, Volume-62, Page-79-87, Issue: 1,2015**

- A Seventeen-Level Inverter formed by Cascading Flying Capacitor and Floating Capacitor H-bridges. Roshan Kumar, P. ; Sudharshan Kaarthik ; Gopakumar, K. ; Leon, J.I. ; Franquelo, L.G..
**IEEE Transactions on Power Electronics, Volume: 30, Page(s): 3471-3478, Issue: 7,2015**

- A Harmonic Suppression Scheme for Open-End Winding Split-Phase IM Drive Using Capacitive Filters, For The Full Speed Range; Najath Abdul Azeez,K Gopakumar,and Carlo Cecati
**IEEE Transactions on IE, Vol-61,issue 10,pp 5213-5221, -2014**

- Hysteresis current controller for a general n-level inverter fed drive with online current error boundary computation and nearly constant switching frequency; Anubrata Dey,Najath Abdul Azeez, K.Mathew, K Gopakumar, Marian P Kazmierkowski
**IET Power Electron.,Vol.6,No.8 pp. 1640-1649,Sept.2013**

- A Three-level Common-mode Voltage Eliminated Inverter With Single DC-Supply Using Flying Capacitor Inverter and Cascaded H-Bridge ; Roshan Kumar, K.Mathew, K Gopakumar, Jose leon and Leopoldo Franquelo
**IEEE Trans On PELs,Vol.29,No.3,pp1402-1409,March -2014**

- A Medium Voltage Inverter Fed IM Drive using Multilevel 12-sided polygonal Vectors, with Nearly Constant Switching Frequency Current Hysteresis Controller ; Najath Abdul Azeez,Anubrata Dey, K.Mathew, K Gopakumar and Marian Kazmierkowski
**IEEE Trans On IE,Vol.61,no.4,pp 1700-1709,April-2014**

- A nearly constant switching frequency Current Error Space Vector Based Hysteresis Controller for an IM drive with 12-sided polygonal voltage space vectors , Najath Abdul Azeez,Anubrata Dey, K.Mathew,Jaison mathew,and K Gopakumar
**Accepted for EPE Journal, Volume: 23-4, 2013**

- A Reduced Device-Count Hybrid Multilevel Inverter Topology with single DC Source andImproved Fault Tolerance “,,Rajeevan P.P,and K Gopakumar
**EPE Journal,Vol.23,no.2,pp-14-23,June-2013**

- Nearly Constant Switching Frequency Hysteresis Current controller with fast online computation Of Boundary for a 2-level VSI Fed IM”,,Anubrata Dey ,K Mathew,K Gopakumar,and Marian P Kazmierkowski
**EPE Journal,Vol23,No.3,2013**

- Multilevel Dodecagonal Space Vector Generation for Induction Motor Drives by Cascading 3 Level and 2 Level Inverters “,K Mathew, Jaison Mathew, Najath Abdul Azeez, Anubrata Dey, L Umanand,K Gopakumar ,
**IET Power Electronics,vol.5,no.8,2012,pp.1324-1332**

- A hybrid multilevel inverter system based on dodecagonal space vectors for medium voltage IM drives “,Jaison Mathew, Member IEEE, Mathew K., Najath Abdul Azeez and Gopakumar K ,
**IEEE Transactions on Power Electronics,vol.28,no.8,2013,pp.3723-3732.**

- Medium Voltage Drive for Induction Motors using Multilevel Octadecagonal Voltage Space Vectors “,K Mathew, Jaison Mathew, Najath Abdul Azeez, Anubrata Dey, L Umanand, K Gopakumar ,
**IEEE Transactions on Industry Trans. On Power Electronics,vol.28,n0.7,2013,pp.3570-3583**

- A Hybrid Five-level Inverter with Common Mode Voltage Elimination having Single Voltage Source for IM Drive Applications”,Rajeevan P.P,K.Gopakumar,
**IEEE Transactions on Industry Applications,vol.48,n0.6,2012,pp.2037-2047.**

- A Nine-Level Inverter Topology for Medium Voltage Induction Motor Drive with Open-end Stator Winding”,Rajeevan P.P,sivakumar,K.Gopakumar,Chintan Patel, Abu-rub haitham
**IEEE Transactions on Industrial Electronics,vol.60,no.9,pp.3627-3636-2013**

- A Space Vector based Hysteresis Current Controller for a General n-level Inverter Fed Drive with Nearly Constant Switching Frequency Control”,Anubrata Dey, Rajeevan P.P,Rijil Ramchand, Mathew.K,K.Gopakumar,
**IEEE Transactions on Inductrial Electronics,vol.60,no.5,2013,pp.1989-1998**

- A Multilevel inverter scheme with dodecagonalvoltage space vectors based on flying capacitor topology for induction motor drives,Jaison Mathew,Rajeevan P.P,K.Mathew,Najath Abdul Azeez, K.Gopakumar,
**IEEE Transactions on Power Electronics,vol.8,no.1,2013,pp.516-523.**

- A five level inverter topology with single DC-power suply by cascading aflying capacitor inverter and an H-bridge, P.Roshan Kumar,Rajeevan P.P,K.Mathew, K.Gopakumar, Jose.I Leon, Leopoldo G Franquelo,
**IEEE Transactions on Power Electronics,Vol.27,No.8,Aug2012,pp.3505-3513**

- Fast Direct Torque Control of Open-end Induction Motor Drive using 12-sided Polygonal Voltage Space Vectors,Chintan Patel,Rajeevan P.P,Anubrata Dey K.Gopakumar, and Marian P Kazmierkowski, K. Sivakumar,
**IEEE Transactions on IE,Vol.27,NO.1,Jan,2012,pp.400-410**

- Low Inductance Axial Flux BLDC Motor Drive for More Electric Aircraft, K.Gopakumar,Sukumar De, K. Sivakumar,
**IET Power Electronics , Vol.5,Issue.1,2012,pp.124-133.**

- Online Computation of Hysteresis Boundary for Constant Switching Frequency Current Error Space Vector Based Hysteresis Controller for VSI fed IM Drives,Rijil Ramchand, K. Gopakumar,Chintan Patel, K. Sivakumar, Anandarup Das and Abu-Rub Haitham
**IEEE Trans on PELs,Vol.23,NO.3,2012,pp.1521-1529.**

- An asymmetric cascaded H-Bridge inverters for generating 12-sided polygonal space vector diagrams for Motor drives,Mathew.K,Anandarup Das,Chintan Patel,Rijil Ramchand, Gopakumar.K
**EPE Journal,Vol 21 no 1,2011**

- A Seven-level Inverter topology for IM Drive using Two-level Inverters and Floating Capacitor Fed H-Bridges,Rajeevan P.P,K.Sivakumar,Chintan Patel,Rijil Ramchand, Gopakumar.K
**IEEE Trans.on Power electronics,Vol.26,Issue.6,2012,pp.1733-1740.**

- Multilevel inverters for low power applications,Sukumar De, Debmalya Banerjee ,K.Sivakumar,Chintan Patel,Rijil Ramchand,Gopakumar.K
**IET, Power electronics,Vol4,Iss.4,pp.384-392,2011**

- A rotor flux estimation during zero and active vector periods using current error space vector from a hysteresis controller for a sensorless vector control of IM drve , Chintan Patel,Rijil Ramchand,K.Sivakumar, Anandarup Das,Gopakumar.K
**IEEE Trans. On Industrial Electronics,Vol.58,No.6,June 2011**

- Reecent Advances and Industrial Applications of Multilevel converters ,Samir Kouro,Mariusz Malinowski,M.Perez,J I Leon,Gopakumar.K,Joseph Pou,L.G Franquelo,Bin Wu,and Jose Rodriguez
**IEEE Trans. On Industrial Electronics,Vol.57,n0.8,Aug-2010,pp2553-2580**

- A hybrid multilevel inverter topology for an open-end winding IM drive using two-level inverters in series with a capaciotr fed H-bridge cell ,K.Sivakumar,Anandarup Das, Rjil Ramchand,Chintan Patel,and K.Gopakumar
**IEEE Trans. On Industrial Electronics,Vol.57,no.11,Nov.2010,pp.3707-3815**

- A Volatge space vector structure formed by six concentric dodecagons for IM drives. , Anandarup Das,and K.Gopakumar,
**IEEE Trans. on Power electronics,Vol25,no.6,June 2010,pp1480 – 1487**

- Two different schemes for three level voltage space vector generation for induction motor drives with reduced DC link Voltage,K.Sivakumar,Anandarup Das,Rjil Ramchand,Chintan Patel,and K.Gopakumar,
**EPE( European power electronics journal),vol.20,no.1,March2010,pp5-12**

- A survey on cascaded multilevel inverters ,Mariusz Malinowski,K.Gopakumar,Jose Rodriguez and Marcelo Perez,
**IEEE Trans. On Industrial Electronics-Vol.1, No.1,Dec.2009**

- A fivelevel inverter scheme for a four pole induction motor drive by feeding the identical volatge profile windings from both sides ,K.Sivakumar,Anandarup Das, Rjil Ramchand,Chintan Patel,and K.Gopakumar
**IEEE Trans. On Industrial Electronics,Vol.57,no.8,pp.2776-2784,2010.**

- Improved Switching Frequency Variation Control of Hysteresis Controlled VSI Fed IM Drives Using Current Error Space Vector ,Rijil Ramchand,K.Sivakumar,Anandarup Das, Chintan Patel,and K.Gopakumar
**IET Power Electronics,Vol.3,No.2,pp.219-231,March 2010**

- A Five level inverter scheme for an open end winding induction machine with less number of switches ,Sheron Figarado,K.Sivakumar,Rijil Ramchand,Anandarup Das, Chintan Patel,and K.Gopakumar
**IET Power Electronics,Vol.3,Iss.4,pp637-647-2010**

- A Pulse Width Modulated control of Induction Motor drive using multilevel 12-sided polygonal volatge space vectors ,Anandarup Das,K.Sivakumar,P.Chintan, Rijil Ramchand, and K.Gopakumar
**IEEE Trans. On Industrial Electronics,Vol.56,No.7,July 2009**

- A DC-link Capacitor Voltage Balancing with CMV Elimination using only the Switching State Redundancies fora Reduced Switch Count Multi-Level Inverter fed IM Drive, Gopal Mondal, Rijil Ramchand,F.sheron,and K.Gopakumar
**EPE( European power electronics journal),Vol.19,N0.1, March-2009**

- A dual seven level inverter supply for an open-end winding induction motor drive, Gopal Mondal,K. Gopakumar,Rijil Ramchand,Emil Levi
**IEEE Trans.on IE.Vol.56,no.5,May-2009,pp.1665-1673.**

- A combination of Hexagonal and 12-sided polygonal voltage space vector PWM control for Im drives using cascaded two level inverters, Anandarup das,K. Sivakumar, Rijil Ramchand,Chintan Patel, and K.Gopakumar
**IEEE Trans. on IE,Vol.56,NO.5,May 2009.**

- Neutral point balancing of NPC three-level inverter with a front end switched rectifier DC source for the full modulation range, K. Sivakumar,Sukumar De,K.Gopakumar, Gopal Mondal,Keith Corzine,
**IET Proceedings – Electric Power Applications,2008**

- Three level inverter scheme with reduced power devise count for an induction motor drive with coomn mode voltage elimination, Sheron Figarado, Tanmoy Bhattacharya, Gopal Mondal, and K. Gopakumar,
**IET Power Electronics -2008, vol.1, no.1, pp. 84-92, U.K.**

- An 18-sided polygonal voltage space vector based PWM control for an induction motor drive, Sanjay Lakshminarayanan, K. Gopakumar,
**IET Proceedings – Electric Power Applications, 2008, 2, (1), pp. 56-63, U.K**

- Twelve-sided polygonal voltage space vector based multi level inverter for an induction motor drive with common mode voltage elimination, Sanjay Lakshminarayanan, Gopal Mondal, P. N. Tekwani,K.K Mohapatra and K. Gopakumar,
**IEEE trans. ON IE vol.54,no.3, October 2007.pp 2761-2768.**.

- A reduced switch count five-level inverter with common-mode voltage elimination for an open-end winding induction motor drive; Gopal Mondal, K. Gopakumar, P.N. Tekwani, E. Levi, –
**IEEE Trans. on IE vol.54,no.4,August 2007.pp 2344-2351**.

- Linearization of the multi-level SVPWM signal generation in the over-modulation region extending up to six-step mode using only the sampled amplitudes of reference phase voltages; R.S Kanchan, P.N Tekwani and K.Gopakumar-
**EPE JournalVol.17,no.2,June-2007**.

- A five-level inverter topology with common-mode voltage elimination for induction motor drives, P. N. Tekwani, R. S. Kanchan, and K. Gopakumar,
**European Power Electronics (EPE) Journal vol.17,no.1, March 2007.pp 11-23**, Brussels, Belgium.

- Five-level inverter scheme for an induction motor drive with simultaneous elimination of common-mode voltage and dc-link capacitor voltage unbalance- P.N Tekwani, R.S Kanchan, K.Gopakumar
**IEE proceedings on EPA ,vol152,No.6,November 2005,pp1539-1555**

- Synchronised carrier based SVPWM signal generation scheme for the entire modulation range extending upto six-step mode using the sampled amplitudes of reference phase voltages; R.S. Kanchan, K. Gopakumar, Ralph Kennel, Accepted –
**IET – Electric Power Applications ,2007,I,(3),pp.407-415**.

- A dual Five-level Inverter Topology for Induction Motor Drive with DC-link Capacitor Voltage Balancing and Common-mode Voltage Elimination In The Complete Modulation Range, P.N Tekwani, R.S Kanchan,K.Gopakumar, ,
**IEEE – IEEE Trans. on Industrial Electronics Part-I,Vol.54,no.5, OCT 2007.pp.2600-2608.**

- A dual Five-level Inverter Topology for Induction Motor Drive with DC-link Capacitor Voltage Balancing and Common-Mode Voltage Elimination In The Complete Modulation Range – Part-II, P. N. Tekwani, R. S. Kanchan, and K. Gopakumar,
**IEEE Trans. on Industrial Electronics. Vol 54 No.5, OCT. 2007.pp2609-2617**,

- Novel Current Error Space Phasor Based Hysteresis Controller Using Parabolic Bands for Control of Switching Frequency Variations; P.N. Tekwani, R.S. Kanchan, K. Gopakumar,
**IEEE Trans. on IE, Vol 54 No.5, OCt. 2007.pp2648-2656.**

- A novel six phase induction motor drive without harmonic filters and with linear voltage control for the full modulation range – K.K Mohapatra, K.Gopakumar,
**EPE (European power electronics and drives) Journal,vol.16,no.4, December-2006**

- Three level inverter scheme with common mode voltage elimination and DC link capacitor voltage balancing for an open-end winding induction motor drive, R.S Kanchan, P.N Tekwani, K.Gopakumar,
**IEEE Trans. On Power Electronics,vol.21,No.6, November 2006**

- A sensorless field oriented control if induction motor using ripple currents in space phasor based PWM control- K.K Mohapatra, K.Gopakumar,
**EPE Journal,vol.16,no.3,September-2006**.

- A multi-level inverter with 12-sided polygonal voltage space vector locations for an induction motor drive, Sanjay Lakshminarayanan, R. S. Kanchan, P. N. Tekwani, and K. Gopakumar,
**IEE Proceedings – Electric Power Applications,vol.153,no.3, May-2006**, U.K.

- Five-Level Inverter Topology for IM Drive With DC-Link Capacitor Voltage Balancing and Common-Mode Voltage Elimination in Entire Modulation Range: A Closed-Loop Control Accepted for the
**Polish Journal Electrical Review – Przeglad Elektrotechniczny**R .82 NR 2/2006.pp 73-83.

- Independent field oriented control of two split-phase induction motors from a single six-phase inverter, K.K Mohapatra, R.S Kanchan, M.R Baiju, P.N Tekwani, K.Gopakumar,
**IEEE Transactions on Industrial electronics,Vol.52, no.5,October-2005**

- Current Error Space Vector Based Hysteresis PWM Controller for Three-level Voltage Inverter fed Drive- accepted — P.N Tekwani, R.S Kanchan, K.Gopakumar accepted for publication in
**IEE-EPA Journal**– Vol.152. No.5. Sept.2005

- A Multi level inverter system for an induction motor with open-end windings. V.T Somasekhar, M.R Baiju, K.Gopakumar, K.K Mohapatra,
**IEEE Transactions on Industrial electronics**, Vol.52, NO.3, June-2005, pp 824-836.

- Three level inverter configuration with common mode elimination for an induction motor drive, R.S Kanchan,P.N Tekwani,M.R Baiju,K.Gopakumar, A.Pittet,
**IEE Proceedings on Electric power applications**, Vol.152, No 2.April 2005, pp. 261-270

- Space vector PWM signal generation for multi-level inverters using only the sampled amplitudes of reference phase voltages, R.S Kanchan, M.R Baiju, K.K Mohapatra, P.P Ouseph, K.Gopakumar,
**IEE Proceedings on Electric power applications**, Vol.152, No.2, April 2005, pp.297-309

- A space phasor based current hysteresis controller using adjacent inverter voltage vector selection with smooth transition to six-step operation for a three phase voltage source inverter, M.R Baiju, K.K Mohapatra, R.S Kanchan, P.N Tekwani, K.Gopakumar,
**EPE Journal**, Vol.15, No.1,2005.

- A four level inverter scheme with reduced common mode voltage for an induction motor drive, R.S Kanchan, P.N Tekwani, M.R Baiju, K.Gopakumar,
**EPE (European power electronics and drives) journal**, Vol.15, No.3,2005.

- Independent speed control of two six-phase induction motors using a single six-phase inverter, K.K Mohapatra, M.R Baiju, K.Gopakumar,
**EPE Journal**, Vol.13,No.3, August 2004, pp.49-62.

- A dual two-level inverter scheme with commonmode voltage elimination for an induction motor drive : M.R.Baiju, K.K Mohapatra, R.S Kanchan, K.Gopakumar,
**IEEE Trans. On Power Electronics.**Vol.19. No.3, May 2004, pp.794-805.

- Dual two-level inverter scheme for an open-end winding IM drive with a single DC power supply and improved DC bus utilisation : V.T Somasekhar, K.Gopakumar, M.R Baiju.
**IEE Proceedings on Electric power applications. UK. March 2004**

- A harmonic elimination and suppression scheme for an open-end winding induction motor drive, K.K Mohapatra,K.Gopakumar,V.T Somasekhar, L.Umanand
**IEEE Transactions on Industrial electronics.**Vol.50,No.6, Dec.2003, pp.1187-1197

- A high resolution multi-level voltage space phasor generation for an open-end winding induction motor drive. M.R Baiju, K.Gopakumar, V.T Somasekhar, K.K Mohapatra, L.Umanand. CD Rom copy No.18.
**EPE Journal**, Vol.13, no.4. November 2003.

- A harmonic elimination scheme for an induction motor with open-end windings fed from two inverters with asymmetrical DC link voltages: K.K Mohapatra, K.Gopakumar, V.T Somasekhar,
**EPE journal.**Vol.12., no.4., November-2003.

- A five level inverter voltage space phasor generation for an open-end winding induction motor drive. M.R Baiju, K.K Mohapatra, V.T Somasekhar, K.Gopakumar, L.Umanand,
**IEE Proc.-Electr. Power Applications**, Vol.150, No.5, September 2003, pp531-538

- A space vector based PWM method using only instantaneous amplitudes of reference phase voltages for three level inverters. M.R Baiju, K.Gopakumar, V.T Somasekhar,
**EPE journal.**Vol.13.no.2.May-2003. pp 35-45.

- Three-level inverter configuration cascading two two-level inverters. V.T Somasekhar, K.Gopakumar,
**IEE Proceedings.**Electr. Power. Appl., Vol.150,No.3, May 2003. pp 245-254.

- A multilevel voltage space phasor generation for an open-end winding induction motor drive using a dual – inverter scheme with asymmetrical DC link voltages: V.T Somasekhar, K.Gopakumar, E.G Shivakumar, A.Pittet,
**EPE journal**Vol.12, no.3, August-2002, pp 7-15

- A space vector modulation scheme for a dual two level inverter fed open-end winding induction motor drive for the elimination of zero sequence currents, V.T Somasekhar, K.Gopakumar, E.G Shivakumar, S.KSinha
**EPE journal.**Vol.12.no.2.May 2002, pp.26-36.

- PWM inverter switching stratqgy for a dud two-levelinverter fed open-end winding induction motor drive with a switched neutral,V.T Somasekhar, K.Gopakumar,A.Pittet and V.T Ranganathan
**IEE Proc. -Electric Power Appln.Vol.149.no.2,March2002,pp.153-160 journal.**Vol.12.no.2.May 2002, pp.26-36.

- Space vector PWM control of Dual inverter fed open-end winding induction motor drive. E.G Shivakumar, K.Gopakumar, S.K.Sinha, A.Pittet, V.T Ranganathan,
**EPE journal.**Vol.12. no.1. February 2002, pp.9-18.

- A PWM scheme for a 3-level inverter cascading two 2-level inverters, V.T Somasekhar K.Gopakumar, M.R Baiju, K.K Mohapatra, L.Umanand
**Journal of the Indian Institute of Science**, Bangalore, vol.82,No.1, Jan-Feb.2002, pp 23-36.

- A multi Axis space Phasor Based Current Hysteresis Controller for PWM Inverters : V.Mistry, Sailesh waikar, K.Gopakumar, V.T Ranganathan, L.Umanand
**EPE journal**Vol.10. no.1. April-2000, pp.17-25.

- A sensorless vector control scheme for induction motors using space phasor based current hysteresis controller. Ebenezer.V, K.Gopakumar, V.T Ranganathan,
**EPE journal.**Vol.9.no.3-4. January 2000, pp.42-46.

- Vector Control of Induction Motor with Split Phase Stator Windings. K. Gopakumar, V.T Ranganathan, S.R Bhat.
**EPE (European Power Electronics and Drives)**journal. Vol.7. no.1-2 August-October-1997, pp.61-66

- Split – phase induction motor operation from PWM voltage source inverter. K.Gopakumar, V.T Ranganathan, S.R Bhat,
**IEEE Trans. Industry Applns.**Vol.29. No. 5. September/October 1993. pp 927-933

- Performance of Improved Dual Current Source Inverter for Induction Motor Drive. K.Gopakumar,
**et. al. IETE**, India, Vol.67, April – 1987.

- Modified Current Source Inverter fed Induction Motor Drive with Reduced Torque Pulsations. K. Gopakumar, et .al.
**IEE Proceedings, vol.131. pt. B. No. 4**July-1984

### Publications in Conferences

- An improvised algorithm for capacitor voltage balancing of symmetrically cascaded floating capacitor H-bridge inverter;Roshan KumarR, Gopakumar.K*,
**IEEE-IECON 2016, Florence, Italy.**

- A novel forty nine level stacked inverter topology using low voltage devices for drives; Viju Nair; Sumit Pramanick; Arun Rahul S; K. Gopakumar and B. Basak and Leopoldo,*,
**IEEE-IECON 2016, Florence, Italy.**

- A Multilevel Inverter Fed IM Drive with Dodecagonal Voltage Space Vector Structure using a Single DC Source with Linear Modulation Range Near to Base Speed; Mathews Boby; Sumit Pramanick; Arun Rahul S; K. Gopakumar and L. Umanand R,*,
**IEEE-EPE 2016, Carlshruhe, Germany.**

- Reduced switch count seventeen level inverter topology for open-end induction motord rives; Abhijit Kshirsagar,sudharshan Kaarthik,Arun Rahul S; K. Gopakumar and L. Umanand R,Sujit Biswas, Carlo cecati*,
**IEEE-IECON 2016,Florence,Italy.**

- A new nine level stacked inverter topology for a symmetric six phase induction motor drive with low voltage devices and usinga single DC link, Viju Nair R, Arun Rahul S, Sumit Pramanick, K.Gopakumar and Leopoldo G. Franquelo,*,
**IEEE-ISIE 2016, California, USA.**

- Timing Calculations for Three Level Dodecagonal Space Vector Structure From Reference Phase Voltages R. Sudharshan Kaarthik, Prof. K. Gopakumar,Carlo Cecati, Istvan Nagy ,*,
**IEEE-IECON 2015, Yokohama, Japan.**

- Nine Level Inverter for Open End Induction Motor with Eight Switches per Phase Abhijit Kshirsagar, R. Sudharshan Kaarthik, Prof. K. Gopakumar,Prof. L. Umanand, and Prof. Kaushik Rajashekhara,*,
**IEEE-IECON 2015, Yokohama, Japan.**

- A Hybrid seven level Inverter topologywith a single DC supply and reduced switch count,Arun Rahul S, Sudharshan Kaarthik, K Gopakumar, Rajeevan P.P, Jose I Leon and Leopoldo Franquelo,Istvan Nagy,*,
**EPE-ECCE 2015, Geneva, Switzerland.**

- A Hybrid Multilevel Inverter scheme for Induction Motor Drives and Grid-Tied Applications using a Single DC-link, Sudharshan Kaarthik, Roshan Kumar, K Gopakumar, Jose I Leon and Leopoldo Franquelo,*,
**ICIT 2015, Seville, Spain.**

- A 19 Level Dodecagonal Voltage Space Vector Structure for Medium Voltage IM Drive, Sudharshan kaarthik, Gopakumar K, Carlo Cecati and Istvan nagy,*,
**IECON 2014, Dallas, Texas, USA**

- An open-end winding IM drive with multilevel 12-sided polygonal vectors with symmetric triangles, Sudharshan Kaarthik, Gopakumar .K, jaison mathew, T. Undeland,*,
**EPE ECCE 2014, Lappeenranta, Finaland**

- A 5th and 7th order harmonic suppression scheme using capacitive filtering for 2-level VSI fed IM drive Najath Abdul Azeez , Sumit Pramanick, K. Gopakumar and Carlo Cecati,*,
**International Symposium on Power Electronics, Electrical Drives, Automation and Motion Conference 2014,Naples, Italy**

- A Seventeen-level Inverter With a Single DC-link For Motor Drives,Roshan Kumar, Sudharshan Karthik,Rajeevan P.P, K Gopakumar,Jose Leon and Leopoldo Franquelo,*,
**IEEE IECON-2013,WIEN, Austria,**

- A 5th and 7th order harmonic suppression scheme for open-end winding asymmetrical six-phase IM drive using a capacitor inverter,Najath Abdul Azeez, Jaison Mathew, K Gopakumar, and Carlo Decati,*,
**IEEE IECON-2013,WIEN, Austria,**

- A multilevel inverter topology for the generation of Dodecagonal space vectors for medium voltage induction motor with a modified SVPWM strategy for reduction of THD , Jaison Mathew, K.Mathew,Najath,Rajeevan.P.P and K Gopakumar,*,
**EPE-2013,Lille,France,**

- Simple Computation Techniques of Online Boundary to Achieve Constant Switching Frequency in any General n-level VSI fed IM Drive using Hysteresis Current Controller, Anubrata Dey,Najath, K Gopakumar, Marian Kazmierkowski*,
**IEEE-ICIT-2013,Cape Town,Sourh Africa**

- Multilevel Octadecagonal Space Vector Generation for Induction Motor Drives by Cascading Asymmetric Three Level Inverters,K Mathew, Jaison Mathew, Najath Abdul Azeez, Anubrata Dey, L Umanand, K Gopakumar*,
**IEEE-IECON-2012,Montreal,Canada**

- A Nearly Constant Switching Frequency Current Hysteresis Controller with Generalized Parabolic Boundaries using 12-sided Polygonal Voltage,Najath,Anubrata Dey,K.Mathew,Jaison Mathew and K.Gopakumar,
**IEEE-ICEM-2012,France**

- Multilevel Octadecagonal Space Vector Generation for Induction Motor Drives by Cascading Asymmetric Three Level Inverters,K.Mathew, Jaison Mathew,Najath, Anubrata, Gopakumar and L.Umanand
**IEEE-IECON-2012,Raleigh,USA**

- Direct torque control acheme of IM drive with 12-sided polygonal volatge space vectors,Chintan Patel, Rijil Ramchand,Rajeevan P.P,K.Sivakumar,Anandarup das,.K,Gopakumar.K, and Marian Kazmierkowski,
**EPE-2011,Birmingham**

- Online Computation of Current Error Boundary of a Hysteresis Controller for a General n-level VSI Fed Drive with Nearly Constant Switching Frequency,Anubrata Dev,Rajeevan P.P, Mathew.K,Gopakumar.K
**National Power electronics Conference-NPEC-2011,Kolkata.**

- Simple online computation of nearly constant switching frequency hysteresis controller boundary for a 2-level VSI fed drive Anubrata Dev,Rajeevan P.P,Rijil Ramchand, Gopakumar K,Abu-Rub Haitham
**PEIA-2011 ( Power Electronics for Industrial Application and Renewable Energy Conversion) Seminar, Qatar-2011.**

- Nearly Constant Switching Frequency Hysteresis Current Controller for General n-level Inverter Fed Induction Motor Drive Anubrata Dev,Rajeevan P.P, Chintan Patel,Mathew.K, Gopakumar K,
**IECOn-2012,Melbourne,Australia.**

- A Hybrid seven-level Inverter for IM Drive, Rajeevan P.P,Gopakumar K, Sivakumar K, Chintan Patel,Rijil, Gopakumar
**IEEE-PEDES-2010,New Delhi.**

- A Hybrid Nine-level Inverter for IM Drive Rajeevan P.P,Gopakumar K, Sivakumar K, Chintan Patel, Gopakumar K, Abu-Rub Haitham,
**ISIE-2011,Gdansk,Poland.**

- A Current Error Space Vector Based Hysteresis Controller with Constant Switching Frequency and Simple Online boundary Computation for VSI fed IM Drive , Rijil Ramchand, Chintan Patel, Anandarup Das, Sivakumar K,Gopakumar K,
**IECON-2010,Phoenix,USA.**

- Dodecagonal space vector diagram using cascaded H-brideg inverters,Anandarup das,K.Mathew,Chintan Patel,Rijil Ramchand,and K.Gopakumar,
**ISIE-2010,Bari,Italy.**

- A There level voltage space vector generation for open-end winding induction motor using single volatge source driven dual two-level inverter, K. Sivakumar,Anandarup Das,Rijil Ramchand, Chintan Patel, K.Gopakumar,
**TENCON -2009, conf.Singapore.**

- A simple five level inverter topology for induction motor drive using conventional two level inverters and flying capacitor technique,K. Sivakumar, Anandarup Das,Rijil Ramchand, Chintan Patel, K.Gopakumar,
**IECON -2009, conf.Porto, Portugal.**

- Multilevel dodecagonal space vector generation for open end winding induction motor drive using conventional three level inverters,Anandarup Das, K. Sivakumar,Rijil Ramchand, Chintan Patel, K.Gopakumar,
**EPE -2009, conf.Barcelona, Spain.**

- A High Resolution pulse wisdth modulation technique using concentric multilevel Dodecagonal voltage space vector structures,Anandarup Das, K. Sivakumar,Rijil Ramchand, Chintan Patel, K.Gopakumar,
**IEEE,ISIE-2009, conf. in Seoul, South Korea.**

- A Hysteresis PWM Controller with constant switching frequency for two level VSI fed drives with operation extending to the six -step mode,Rijil Ramchand, Anandarup Das, K.Sivakumar,Chintan Patel, K.Gopakumar,
**PCIM-Europe-2009, conf in Nurenberg, Germany ,May.-11 to May.-13.**

- A Front end switched rectifier DC source for neutral point balancing of a NPC three -level inverter for the full modulation range,K. Sivakumar,Sukumar De, K.Gopakumar, Gopal Mondal, Keith Corzine,
**IEEE,ISIE-2008, conf in Cambridge ,June-30 to July-2.**

- A multilevel inverter with hexagonal and 12-sided polygonal space vector structure for induction motor drive, Anandarup Das,K. Sivakumar,Gopal Mondal, K.Gopakumar,
**Accepted IEEE,IECON-2008, conf in Orlando,USA .**

- An improved sapce phasor based current hysteresis controller with reduced switching frequency variations using variable parabolic bands,Rijil Ramchand, K.Gopakumar,P.N Tekwani, and M.R Baiju,
**National Power electronics conference,2007, INDIA.**

- DC link capacitor balancing of NPC inverter using switched voltage source for the full modulation range ,K.Sivakumar,K.Gopakumar and V.T Somasekhar
**National Power electronics conference,2007, INDIA.**

- Three-level inverter fed open-end winding IM drive with common mode volatge elimination and reduced power devise count,Sheron Figarado, K.Gopakumar, Gopal Mondal, K.Sivakumar, N.S Dinesh The 33rd annual conference of the
**IEEE Industrial electronics society( IECON), Nov.5-8, 2007,Taipei, Taiwan,pp1238-1243.**

- Multilevel inverter with 18-sided polygonal voltage space vector for an open-end winding induction motor drive – Sanjay Lakshminarayanan,Gopal Mondal and K.Gopakumar
**IEEE, EUROCON-2007,conference,Warsaw,Poland**

- A Multilevel inverter structure with cascaded two level and three level inverters for IM drive with CMV elimination and DC link capacitor voltage balancing – Gopal Mondal,K.Gopakumar,P.N Tekwani,and Emil Levi
**IEEE, IAS-2007 conference,New Orleans,USA**

- A five level inverter scheme with common mode volatge elimination by cascading conventional two level and three level NPC inverters for an induction motor drive – Gopal Mondal, K.Gopakumar,P.N. Tekwani and E.Levi
**EPE-2007 conference**,Aalborg.

- Elimination of common monde voltage and fifth and seventh harmonics in a multilevel inverter fed IM drive using 12-sided polygonal voltage space phasor – Sanjay Lakshminarayanan, Gopal Mondal P.N. Tekwani and K.Gopakumar
**IEEE- PEDES, 2006 conference**, Delhi.

- Generation of Parabolic Trajectories for Current Error Space Phasor similar to an SVPWM Controller for Control of Switching Frequency Variation in Current Hysteresis PWM Controlled IM Drives- P.N Tekwani R.S Kanchan, and K.Gopakumar
**IEEE, ICIT-2006 conference**, MUMBAI

- Switching frequency variation control in hysteresis PWM controller for IM drives using variable parabolic bands for current error space phasor, P.N Tekwani, R.S Kanchan, Sanjay Lakshminarayanan, Gopakumar –
**IEEE-ISIE conference**, Montreal, 2006.

- Linearization of the multi-level SVPWM in the over-modulation region-
**National Power electronics conference**, Dec-22 to 24, 2005, INDIA

- A Multilevel Inverter Scheme With Inherent Common-mode Voltage Elimination and DC-link Capacitor Voltage Balancing for Open-end Winding Induction Motor Drive –
**National Power electronics conference**, Dec-22 to 24, 2005, INDIA.

- Five level inverter topology for induction motor drive with DC link capacitor voltage balancing and common mode voltage elimination in the complete modulation range. – P.N Tekwani, R.S Kanchan, K.Gopakumar, accepted of presenting in
**IEEE-PELINCEC-2005**(Power electronics and intelligent control for energy conservation-Warsaw- Poland)

- A space vector based PWM switching scheme for the reduction of common mode voltages for a dual inverter fed open-end winding induction motor drive, S.Srinivas, V.T Somasekhar, K.Gopakumar,
**IEEE, PESC-2005 conference, Brazil**.

- A self adaptive space phasor based hysteresis current controller with switching of adjacent inverter voltage vectors for three level voltage source inverter fed induction motor drives, P.N Tekwani, R.S Kanchan, K.Gopakumar, accepted for presenting in the
**IEEE, IEMDC conference, USA, San Antonio-2005**

- Three level inverter scheme with common mode voltage elimination and DC link capacitor voltage balancing for an open-end winding induction motor drive, R.S Kanchan, P.N Tekwani, K.Gopakumar, accepted for presenting in the
**IEEE IEMDC conference, USA, San Antonio-2005**

- A five level inverter topology with common mode voltage elimination for induction motor drives, P.N Tekwani, R.S Kanchan, K.Gopakumar,
**EPE conference, Sept.11-14 Dresden-2005**

- A seven level voltage space phasor generation scheme for an open-end winding induction motor drive with asymmetric DC link voltages, R.S Kanchan, P.N Tekwani, M.R Baiju, K.Gopakumar,
**IPEC, 2005, Niggata, Japan**

- A sensorless speed control using stator ripple currents for an induction motor drive with space phasor PWM. K.K Mohapatra, M.R baiju, K.Gopakumar, Balram Murty,
**IEE PEMD-2004 conference Edinburgh., UK.**pp 81-86

- A New five level inverter system for an induction motor with open-end windings. V.T Somasekhar, K.Chandrasekhar, K.Gopakumar.
**IEEE . PEDS-2003, Singapore**.

- Space vector PWM technique using only the instantaneous reference phase voltages for a three level inverter cascading two 2-level inverters. M.R Baiju, K.K Mohapatra, R.S Kanchan, K.Gopakumar.
**NPEC-2003, IIT Mumbai**

- A five level inverter voltage space vector generation for an open-end winding induction motor drive. M.R Baiju, K.K Mohapatra, K.K Mohapatra, L.Umanand,K.Gopakumar.
**IEEE,APEC-2003,USA**

- Space vector based PWM method for dual inverter fed open-end winding induction motor drive using only the instantaneous amplitudes of reference phase voltages. M.R Baiju, K.K Mohapatara, K.Gopakumar
**IEEE PEDS- 2003 conference, Singapore**.

- A novel modulation scheme for a six phase induction motor with open-end windings, K.K Mohapatra, K. Gopakumar, V.T Somasekhar,
**IEEE IECON-02**conference in Spain-2002, Nov 4th to Nov 8th.

- A multilevel inverter system for an induction motor drive with open-end winding;V.T Somasekhar, M.R baiju, K.K Mohapatra,K.Gopakumar,
**IEEE-pEDS Conf. Singapore-2002 conference**.

- Multi axis space phasor based multi level current hysteresis controller for an open-end winding induction motor fed from dual inverters; M.R baiju,K.Gopakumar, L.Umanand, Andre Pittet,
**PCIM-2002 conference**, Nurnberg, Germany, pp. 405-411.

- A multi level space phasor based PWM strategy for an open – end winding induction motor drive using two inverters with different DC link voltages.V.T Somasekhar, K. Gopakumar Andre Pittet, V.T Ranganathan,
**IEEE, PEDS**conference, Indonesia-2001, pp.169-175.

- A novel PWM inverter switching strategy for a dual two-level inverter fed open-end winding nduction motor driv: E.G Shivakumar, K.Gopakumar,S.K Sinha, Andrei Pittet, V.T Ranganathan
**IEEE APEC**conference, USA – 2001, pp.169-174

- Space vector PWM control of dual inverter fed open-end winding Induction motor drive: E.G Shivakumar, V.T Somasekhar, K.K Mohapatra, K.Gopakumar
**IEEE PEDS**conference, Indonesia – 2001, pp.169-174

- Modelling and simulation of sensorless vector control of hybrid step motor-.Muthukumar, S.K. Sinha, K.Gopakumar, L.Umanand. Proceedings, Twenty-Ninth Annual Symposium,
**Incremental Motion Control Systems & Devices**. Berkley, USA 2000, pp.171-179

- Asymmetric multilevel converter for high resolution voltage phasor generation: A Rufer, M.Veenstra, EPFL, Switzerland and K.Gopakumar CEDT, India,
**EPE conf.**Lausanne, switzerland-2000.

- A study on the parallel operation of a front end converter for a high speed electric traction drive: Hong-je Ryoo et.al KERI, changwon, Korea and K.Gopakumar, CEDT, India,
**KIEE**Annual autumn Conference-98,Korea.pp.121-124

- Configurations of high power VSI drives for traction applications using multi level inverters and multi phase induction motors: K.Gopakumar, CEDT, India, Geun-Hie Rim, KERI, Changwon, Korea.
**KIEE**(Korean Institution of Electrical and Electronic Engineers), Fall conference-Nov-97 pp.500-504

- A Multi axis space phasor based crrent hysteresis controller for Induction motor drive.Vinay M Mistry,S.P Waikar K.Gopakumar, L.Umanand V.T Ranganathan,
**IEEE PEDS Conference,Singapore- 1997.**.

- Vector control of induction motor with split phase stator winding. K.Gopakumar, V.T Ranganathan, S.R Bhat,
**IEEE IAS Conference- 1994.**.

- An efficient PWM technique for split phase induction motor operation using dual voltage source inverters. K.Gopakumar, V.T Ranganathan, S.R Bhat,
**IEEE IAS Conference- 1993.**pp582-587.

- Three Phase Voltage Source Inverter for a high Speed PCB Drilling Machine. K. Gopakumar. et.al,
**PCIM – 90 on intelligent Motion. Munich. June – 90**

- Comparative Study of the Dynamic Performance of Two Control schemes for VSI fed induction motor Drive. K. Gopakumar, et.al.
**IEEE. conf.**Computers, Systems and signal Processing, December – 1984

- Torque Analysis of a Six-Phase Induction Motor fed From a Current Source Inverter. Gopakumar,
**et.al. IEEE conf. Computers, Systems**and Signal Processing, December – 1984