nagabrahmendra.g | IIT Palakkad

Biosketch
- Assistant Professor at Indian Institute of Technology Palakkad, India [March 2023 - present]
- Assistant Professor at Indian Institute of Technology Mandi, India between December 2022 and March 2023.
- Post-doctoral Research Fellow at Energy Research Institute @ Nanyang Technological University (ERI@N), Singapore between September 2020 and December 2022.
- Post-doctoral Research Fellow at SembCorp-NUS Corporate Laboratory, National University of Singapore, Singapore between April 2019 and August 2020.
- Doctorate of Philosophy in Electrical Engineering from National University of Singapore, Singapore [Ph.D defense: March 2019].
- Research Engineer in Singapore Polytechnic, Singapore between October 2013 and December 2014.
- Master of Science (by Research) in Electrical Engineering from Indian Institute of Technology Madras, India [awarded in July 2013].
- Batchlor of Technology in Electrical and Electronics Engineering from Acharya Nagarjuna University, India [awarded in July 2010].
Research
Journal Publications:
- J. Saha, N. B. Y. Gorla and S. K. Panda, "Closed-form Solution for Multi-Objective Optimal Analytical Balance Control for a Single-Stage Isolated MVAC-LVDC Converter in an Electric-Vehicle Ultra-Fast Charging-Station," in IEEE Transactions on Transportation Electrification, doi: 10.1109/TTE.2024.3362830.
- R. Sarda et al., "A Control Strategy for Solid-State Transformers With Coupled Load Disturbance Attenuation Ability," in IEEE Transactions on Power Electronics, vol. 39, no. 4, pp. 4029-4041, April 2024, doi: 10.1109/TPEL.2023.3346687.
- S. Singh, N. B. Y. Gorla, K. Jayaraman and J. Pou, "Analysis and Mitigation of Common-Mode Noise With Different Modulation Strategies in SiC-Fed Three-Phase Brushless DC Motor Drive," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 12, no. 1, pp. 663-674, Feb. 2024, doi: 10.1109/JESTPE.2023.3344532.
- A. Kumaresan et al., "Improved Secant-Based Global Flexible Power Point Tracking in Photovoltaic Systems Under Partial Shading Conditions," in IEEE Transactions on Power Electronics, vol. 38, no. 8, pp. 10383-10395, Aug. 2023, doi: 10.1109/TPEL.2023.3277580.
- B. Dwiza, K. Jayaraman, N. B. Y. Gorla, S. Singh and J. Pou, "Analysis of Common-Mode Noise and Design of a Reduced-Volume Concentric Choke for Dual Active Bridge dc–dc Converter With Integrated Magnetics," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 11, no. 4, pp. 4022-4031, Aug. 2023, doi: 10.1109/JESTPE.2023.3270625.
- N. B. Y. Gorla, J. Saha, K. Jayraman and S. K. Panda, "A Modulation Strategy With Transformer Leakage Inductance Energy Management for a Three-Phase Matrix-Based Isolated AC–DC Converter," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 11, no. 3, pp. 2780-2792, June 2023, doi: 10.1109/JESTPE.2023.3235743.
- B. Dwiza, K. Jayaraman, N. B. Y. Gorla and J. Pou, "Analysis of Common-Mode Noise and Mixed-Mode Differential-Mode Noise in Dual Active Bridge Converter," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 11, no. 1, pp. 657-666, Feb. 2023, doi: 10.1109/JESTPE.2022.3201327.
- N. Beniwal et al., "Dual-Layer Pulsewidth Modulation Technique for Average Neutral Point Current Control in Neutral-Point-Clamped Converters," in IEEE Transactions on Power Electronics, vol. 37, no. 10, pp. 11762-11773, Oct. 2022, doi: 10.1109/TPEL.2022.3175253.
- G. Liang et al., "A Constrained Intersubmodule State-of-Charge Balancing Method for Battery Energy Storage Systems Based on the Cascaded H-Bridge Converter," in IEEE Transactions on Power Electronics, vol. 37, no. 10, pp. 12669-12678, Oct. 2022, doi: 10.1109/TPEL.2022.3170062.
- S. Kamala, N. B. Y. Gorla and S. K. Panda, "Small-Signal Stability Improvement of Microgrid With Battery Energy Storage System Based on Real-Time Grid Impedance Measurement," in IEEE Transactions on Industry Applications, vol. 58, no. 2, pp. 2537-2546, March-April 2022, doi: 10.1109/TIA.2021.3140017.
- J. Saha, N. B. Yadav Gorla and S. K. Panda, "Analytical Expression-Based Modulation for Soft-Switched Matrix-Based Dual-Active-Bridge (S2MB-DAB) Single-Phase AC-DC Converter," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 10, no. 6, pp. 6511-6522, Dec. 2022, doi: 10.1109/JESTPE.2021.3135630.
- S. Singh, N. B. Y. Gorla, K. Jayaraman and J. Pou, "Analysis and Mitigation of the Common-Mode Noise in a Three-Phase SiC-Based Brushless DC Motor Drive With 120° Conduction Mode," in IEEE Transactions on Power Electronics, vol. 37, no. 5, pp. 5514-5523, May 2022, doi: 10.1109/TPEL.2021.3133880.
- N. B. Y. Gorla, S. Kolluri, M. Chai and S. K. Panda, "An Open-Circuit Fault Detection and Localization Scheme for Cascaded H-Bridge Multilevel Converter Without Additional Sensors," in IEEE Transactions on Industry Applications, vol. 58, no. 1, pp. 457-467, Jan.-Feb. 2022, doi: 10.1109/TIA.2021.3123199.
- J. Saha, N. B. Y. Gorla and S. K. Panda, "Implementation of Power Balance Control Scheme for a Cascaded Matrix-Based Dual-Active-Bridge (CMB-DAB) MVAC-LVDC Converter," in IEEE Transactions on Industry Applications, vol. 58, no. 1, pp. 388-399, Jan.-Feb. 2022, doi: 10.1109/TIA.2021.3118657.
- J. Saha, N. B. Y. Gorla, A. Subramaniam and S. K. Panda, "Analysis of Modulation and Optimal Design Methodology for Half-Bridge Matrix-Based Dual-Active-Bridge (MB-DAB) AC–DC Converter," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 10, no. 1, pp. 881-894, Feb. 2022, doi: 10.1109/JESTPE.2021.3107500.
- M. W. Ahmad, N. B. Y. Gorla, H. Malik and S. K. Panda, "Noninvasive Model-Based Open-Circuit Switch Fault Detection of AC-Bypass Leg Switches in Transformerless PV Inverter," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 6, pp. 6671-6680, Dec. 2021, doi: 10.1109/JESTPE.2021.3098195.
- J. Saha, D. Hazarika, N. B. Y. Gorla and S. K. Panda, "Machine-Learning-Aided Optimization Framework for Design of Medium-Voltage Grid-Connected Solid-State Transformers," in IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 9, no. 6, pp. 6886-6900, Dec. 2021, doi: 10.1109/JESTPE.2021.3074408.
- M. W. Ahmad, N. B. Y. Gorla, H. Malik and S. K. Panda, "A Fault Diagnosis and Postfault Reconfiguration Scheme for Interleaved Boost Converter in PV-Based System," in IEEE Transactions on Power Electronics, vol. 36, no. 4, pp. 3769-3780, April 2021, doi: 10.1109/TPEL.2020.3018540.
- N. B. Y. Gorla, S. Kolluri, M. Chai and S. K. Panda, "A Novel Open-Circuit Fault Detection and Localization Scheme for Cascaded H-Bridge Stage of a Three-Stage Solid-State Transformer," in IEEE Transactions on Power Electronics, vol. 36, no. 8, pp. 8713-8729, Aug. 2021, doi: 10.1109/TPEL.2019.2918148.
- M. Chai, N. B. Y. Gorla and S. K. Panda, "Fault Detection and Localization for Cascaded H-Bridge Multilevel Converter With Model Predictive Control," in IEEE Transactions on Power Electronics, vol. 35, no. 10, pp. 10109-10120, Oct. 2020, doi: 10.1109/TPEL.2020.2978670.
- S. Kolluri, N. B. Y. Gorla and S. K. Panda, "Capacitor Voltage Ripple Suppression in a Modular Multilevel Converter Using Frequency-Adaptive Spatial Repetitive-Based Circulating Current Controller," in IEEE Transactions on Power Electronics, vol. 35, no. 9, pp. 9839-9849, Sept. 2020, doi: 10.1109/TPEL.2020.2971737.
- M. Chai, N. B. Y. Gorla and S. K. Panda, "Improved Performance With Dual-Model Predictive Control for Cascaded H-Bridge Multilevel Converter," in IEEE Transactions on Industry Applications, vol. 55, no. 5, pp. 4886-4899, Sept.-Oct. 2019, doi: 10.1109/TIA.2019.2918144.
- S. Kolluri, N. B. Y. Gorla, R. Sapkota and S. K. Panda, "A New Control Architecture With Spatial Comb Filter and Spatial Repetitive Controller for Circulating Current Harmonics Elimination in a Droop-Regulated Modular Multilevel Converter for Wind Farm Application," in IEEE Transactions on Power Electronics, vol. 34, no. 11, pp. 10509-10523, Nov. 2019, doi: 10.1109/TPEL.2019.2897150.
- N. B. Y. Gorla, S. Kolluri, M. Chai and S. K. Panda, "A Comprehensive Harmonic Analysis and Control Strategy for Improved Input Power Quality in a Cascaded Modular Solid State Transformer," in IEEE Transactions on Power Electronics, vol. 34, no. 7, pp. 6219-6232, July 2019, doi: 10.1109/TPEL.2018.2873201.
- O. Gandhi, C. D. Rodríguez-Gallegos, N. B. Y. Gorla, M. Bieri, T. Reindl and D. Srinivasan, "Reactive Power Cost From PV Inverters Considering Inverter Lifetime Assessment," in IEEE Transactions on Sustainable Energy, vol. 10, no. 2, pp. 738-747, April 2019, doi: 10.1109/TSTE.2018.284654.
- N. B. Y. Gorla and N. L. Narasamma, "An Active Soft Switched Phase-Shifted Full-Bridge DC–DC Converter: Analysis, Modeling, Design, and Implementation," in IEEE Transactions on Power Electronics, vol. 29, no. 9, pp. 4538-4550, Sept. 2014, doi: 10.1109/TPEL.2013.2284780.
Conference Publications:
- S. Singh, B. Dwiza, N. B. Y. Gorla and J. Kalaiselvi, "Design of Common-Mode Transformer for Damping of High-Frequency Leakage Current in PAM Inverter-Fed Three Phase Brushless dc Motor Drive System," 2023 IEEE 2nd Industrial Electronics Society Annual On-Line Conference (ONCON), SC, USA, 2023, pp. 1-5, doi: 10.1109/ONCON60463.2023.10430828.
- A. Kumaresan et al., "High Voltage Selective Global Flexible Power Point Tracking for Photovoltaic Systems," 2023 IEEE Energy Conversion Congress and Exposition (ECCE), Nashville, TN, USA, 2023, pp. 652-656, doi: 10.1109/ECCE53617.2023.10362044.
- R. Sarda et al., "Low-Capacitance Solid-State Transformer Control Using an Analytic Filter," 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia), Jeju Island, Korea, Republic of, 2023, pp. 2530-2535, doi: 10.23919/ICPE2023-ECCEAsia54778.2023.102136
- S. Singh, B. Dwiza, N. B. Y. Gorla and J. Kalaiselvi, "Toroidal-EE-Based Integrated Common-mode Choke for dc-side EMI filter," 2023 IEEE IAS Global Conference on Renewable Energy and Hydrogen Technologies (GlobConHT), Male, Maldives, 2023, pp. 1-5, doi: 10.1109/GlobConHT56829.2023.10087379.
- B. Dwiza, S. Singh, J. Kalaiselvi and N. B. Y. Gorla, "Analytical Modeling of Three-Winding Tunable Common-Mode Choke," 2023 IEEE IAS Global Conference on Renewable Energy and Hydrogen Technologies (GlobConHT), Male, Maldives, 2023, pp. 1-5, doi: 10.1109/GlobConHT56829.2023.10087480.
- B. Dwiza, S. Singh, J. Kalaiselvi and N. B. Y. Gorla, "New Toroidal Inductor Configurations for Improved Inductance," 2022 IEEE 1st Industrial Electronics Society Annual On-Line Conference (ONCON), kharagpur, India, 2022, pp. 1-4, doi: 10.1109/ONCON56984.2022.10126907.
- M. R. M K P, M. W. Ahmad and N. B. Y. Gorla, "Sliding Mode Observer Based Open-Circuit Fault Detection in the HERIC PV Inverter," 2022 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Jaipur, India, 2022, pp. 1-5, doi: 10.1109/PEDES56012.2022.10080686.
- S. Singh, N. B. Y. Gorla and J. Kalaiselvi, "Comparative Analysis of Two-Phase and Three-Phase Common-Mode Equivalent Circuit for Three-Phase Brushless DC Motor Drive," 2022 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Jaipur, India, 2022, pp. 1-4, doi: 10.1109/PEDES56012.2022.10080062.
- A. Kumaresan, H. D. Tafti, G. G. Farivar, N. B. Y. Gorla, N. Beniwal and J. Pou, "Performance Comparison of Flexible Power Point Tracking Algorithms on Normal and Degraded Photovolatic Modules," 2022 IEEE 7th Southern Power Electronics Conference (SPEC), Nadi, Fiji, 2022, pp. 1-6, doi: 10.1109/SPEC55080.2022.10058459.
- G. Liang, N. B. Y. Gorla, E. Rodriguez, G. G. Farivar and J. Pou, "Fault Ride-Through Control of Cascaded H-Bridge Converter-Based Battery Energy Storage Systems with Redundant Submodules," 2022 IEEE 7th Southern Power Electronics Conference (SPEC), Nadi, Fiji, 2022, pp. 1-5, doi: 10.1109/SPEC55080.2022.10058368.
- G. Liang et al., "A Comparison of PI-Based and Sorting-Based State of Charge Balancing Methods in Cascaded H - Bridge Converters," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-7, doi: 10.1109/ECCE50734.2022.9947545.
- A. Kumaresan, G. G. Farivar, H. D. Tafti, N. Beniwal, N. B. Y. Gorla and J. Pou, "Global Maximum Power Point Tracking for Photovoltaic Systems Using Hybrid Secant and Binary Search Algorithms," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-6, doi: 10.1109/ECCE50734.2022.9948026.
- N. B. Y. Gorla and S. K. Panda, "Comparative Overview of Power Balance Control for Two-stage and Single-stage Isolated MVAC-LVDC Cascaded Converters," 2022 International Power Electronics Conference (IPEC-Himeji 2022- ECCE Asia), Himeji, Japan, 2022, pp. 2465-2471, doi: 10.23919/IPEC-Himeji2022-ECCE53331.2022.9807000.
- G. Liang et al., "A Comparison of the Battery Fault Tolerance of Modular Multilevel Converters with Half-Bridge and Full-Bridge Submodules," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 153-159, doi: 10.1109/ECCE47101.2021.9595122.
- H. W. Yan et al., "Control Strategy for Effective Battery Utilization in a Stand-Alone DC Microgrid with Solar Energy," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 1046-1051, doi: 10.1109/ECCE47101.2021.9595777.
- H. W. Yan et al., "Comparative Study of Coordinated Photovoltaic and Battery Control Strategies on the Battery Lifetime in Stand-Alone DC Microgrids," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 1034-1039, doi: 10.1109/ECCE47101.2021.9595374.
- E. Rodriguez et al., "Passivity Control in Modular Battery Energy Storage Systems," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), Vancouver, BC, Canada, 2021, pp. 148-152, doi: 10.1109/ECCE47101.2021.9595894.
- A. Kumaresan, H. D. Tafti, G. G. Farivar, N. B. Y. Gorla, N. Beniwal and J. Pou, "Flexible Power Point Tracking Algorithm for Photovoltaic Systems Using the Newton’s Method," IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, Toronto, ON, Canada, 2021, pp. 1-6, doi: 10.1109/IECON48115.2021.9589958.
- J. Saha, N. B. Y. Gorla, A. Subramaniam and S. K. Panda, "Computational Feasibility of Multi-objective Optimal Design Techniques for Grid-Connected Multi-cell Solid-State-Transformers," IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, Toronto, ON, Canada, 2021, pp. 1-6, doi: 10.1109/IECON48115.2021.9589779.
- N. Beniwal, G. G. Farivar, S. Ceballos, N. B. Y. Gorla and J. Pou, "Effect of Zero-Sequence Voltage on the Maximum Average Neutral-Point Current Limit of Neutral-Point-Clamped Converters," IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, Toronto, ON, Canada, 2021, pp. 1-5, doi: 10.1109/IECON48115.2021.9590005.
- G. Liang, G. G. Farivar, N. B. Y. Gorla, E. Rodriguez and J. Pou, "Battery Fault Tolerance of Modular Multilevel Converter-Based Battery Energy Storage Systems with Redundant Submodules," IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society, Toronto, ON, Canada, 2021, pp. 1-6, doi: 10.1109/IECON48115.2021.9589060.
- S. S. Lee, N. B. Y. Gorla, S. K. Panda, K. -B. Lee, Y. P. Siwakoti and R. Barzegarkhoo, "A Common-Ground-Type Single-Stage Buck-Boost Inverter with Sinusoidal Output Voltage," 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), Singapore, Singapore, 2021, pp. 397-401, doi: 10.1109/ECCE-Asia49820.2021.9479023.
- J. Saha, N. B. Y. Gorla and S. K. Panda, "Modulation of Direct Matrix-Based Dual-Active-Bridge (MB-DAB) AC-DC Converters," 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), Singapore, Singapore, 2021, pp. 74-79, doi: 10.1109/ECCE-Asia49820.2021.9479303.
- N. B. Y. Gorla, G. Ghias Farivar, G. Liang, N. Beniwal, R. R. Ezequiel and J. Pou, "Operation of Cascaded H-bridge-Based Split-Battery Energy Storage System With Reduced Sensors," 2021 IEEE 12th Energy Conversion Congress & Exposition - Asia (ECCE-Asia), Singapore, Singapore, 2021, pp. 1572-1577, doi: 10.1109/ECCE-Asia49820.2021.9479163.
- S. Kamala, N. B. Y. Gorla and S. K. Panda, "Small Signal Stability Analysis of Three-Phase Microgrid in the Presence of Energy Storage System," 2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Jaipur, India, 2020, pp. 1-6, doi: 10.1109/PEDES49360.2020.9379564.
- S. Kolluri, N. B. Y. Gorla and S. K. Panda, "A New Architecture for Circulating Current Control in a Multi-port Hybrid Nine-Arm Modular Multilevel Converter," 2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Jaipur, India, 2020, pp. 1-6, doi: 10.1109/PEDES49360.2020.9379463.
- J. Saha, N. B. Y. Gorla and S. K. Panda, "Power Balance Control of Cascaded Matrix-Based Dual-Active-Bridge Converter," 2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Jaipur, India, 2020, pp. 1-6, doi: 10.1109/PEDES49360.2020.9379382.
- N. B. Y. Gorla, J. Saha, K. Jayraman and S. K. Panda, "Analysis and Implementation of a Three-Phase Matrix-based Isolated AC-DC Converter With Transformer Leakage Energy Management," 2020 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Jaipur, India, 2020, pp. 1-6, doi: 10.1109/PEDES49360.2020.9379626.
- N. B. Y. Gorla and S. Kumar Panda, "Survey of Open-circuit Fault Detection and Localization Methods Applicable to Cascaded H-bridge Multilevel Converters," IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, Singapore, 2020, pp. 3988-3994, doi: 10.1109/IECON43393.2020.9254851.
- R. Chandra et al., "A Survey of Failure Mechanisms and Statistics for Critical Electrical Equipment in Buildings," IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, Singapore, 2020, pp. 1955-1961, doi: 10.1109/IECON43393.2020.9254225.
- J. Saha, N. B. Y. Gorla and S. Kumar Panda, "A Bidirectional Matrix-Based AC-DC Dual-Active Bridge for Modular Solid-State-Transformers," IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society, Singapore, 2020, pp. 1136-1141, doi: 10.1109/IECON43393.2020.9255301.
- N. B. Y. Gorla, J. Saha, R. Chandra and S. k. Panda, "Analysis of Balance Controllers for Cascaded Modular Solid-State Transformer during Steady-state, Transient and Fault Conditions," 2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe), The Hague, Netherlands, 2020, pp. 939-944, doi: 10.1109/ISGT-Europe47291.2020.9248868.
- R. Chandra, N. B. Y. Gorla and S. K. Panda, "Transactive Control of Air-Conditioning Systems in Buildings for Demand Response," 2020 IEEE PES Innovative Smart Grid Technologies Europe (ISGT-Europe), The Hague, Netherlands, 2020, pp. 81-85, doi: 10.1109/ISGT-Europe47291.2020.9248885.
- N. B. Y. Gorla, S. Kolluri, M. Chai and S. Kumar Panda, "A New Model-Based Fault Detection and Localization Scheme for Cascaded H-bridge Multilevel Converter," 2020 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2020, pp. 4981-4987, doi: 10.1109/ECCE44975.2020.9236140.
- J. Saha, N. B. Y. Gorla and S. Kumar Panda, "A Review on Bidirectional Matrix-Based AC-DC Conversion for Modular Solid-State-Transformers," 2019 IEEE 4th International Future Energy Electronics Conference (IFEEC), Singapore, 2019, pp. 1-8, doi: 10.1109/IFEEC47410.2019.9015013.
- N. B. Y. Gorla, S. Kolluri, M. Chai and S. K. Panda, "A New Control Scheme to Process Ripple Power Through Isolation Stage of the Three-stage Solid State Transformer," 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia), Busan, Korea (South), 2019, pp. 1662-1667, doi: 10.23919/ICPE2019-ECCEAsia42246.2019.8796927.
- J. Saha, N. B. Y. Gorla and S. K. Panda, "A Matrix-Based Solid-State-Transformer For A Hybrid Nanogrid," 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Chennai, India, 2018, pp. 1-6, doi: 10.1109/PEDES.2018.8707623.
- M. Chai, N. B. Y. Gorla and S. K. Panda, "Dual-Model Predictive Control for Cascaded H-Bridge Multilevel Active Rectifier with DC Voltage Balancing in a Solid-State Transformer," 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, OR, USA, 2018, pp. 5657-5663, doi: 10.1109/ECCE.2018.8557993.
- S. Kolluri, N. B. Y. Gorla, R. Sapkota and S. K. Panda, "Spatial repetitive controller for improved steady state performance of droop regulated modular multilevel converter in wind farm application," 2018 IEEE Applied Power Electronics Conference and Exposition (APEC), San Antonio, TX, USA, 2018, pp. 1673-1678, doi: 10.1109/APEC.2018.8341242.
- N. B. Y. Gorla, S. Kolluri and S. K. Panda, "Solid state transformer control aspects for various smart grid scenarios," 2017 IEEE Innovative Smart Grid Technologies - Asia (ISGT-Asia), Auckland, New Zealand, 2017, pp. 1-6, doi: 10.1109/ISGT-Asia.2017.8378443.
- S. Kolluri, N. B. Y. Gorla, R. Sapkota and S. K. Panda, "A new control approach for improved dynamic performance of MMC based HVDC subsea power transmission system," 2017 IEEE Innovative Smart Grid Technologies - Asia (ISGT-Asia), Auckland, New Zealand, 2017, pp. 1-6, doi: 10.1109/ISGT-Asia.2017.8378458.
- S. Kolluri, N. B. Y. Gorla, R. Sapkota and S. K. Panda, "A repetitive and Lyapunov function-based control approach for improved steady state and dynamic performance of modular multilevel converters," IECON 2017 - 43rd Annual Conference of the IEEE Industrial Electronics Society, Beijing, China, 2017, pp. 687-692, doi: 10.1109/IECON.2017.8216119.
- N. B. Y. Gorla, S. Kolluri, P. J. Chauhan and S. K. Panda, "A fault tolerant control approach for a three-stage cascaded multilevel solid state transformer," 2017 IEEE 18th Workshop on Control and Modeling for Power Electronics (COMPEL), Stanford, CA, USA, 2017, pp. 1-6, doi: 10.1109/COMPEL.2017.8013310.
- N. B. Y. Gorla, K. Ali, P. Das and S. K. Panda, "Analysis of active power decoupling in single-phase rectifier using six-switch topology," 2016 IEEE 2nd Annual Southern Power Electronics Conference (SPEC), Auckland, New Zealand, 2016, pp. 1-6, doi: 10.1109/SPEC.2016.7846133.
- K. Ali, S. Kolluri, N. B. Y. Gorla, P. Das and S. K. Panda, "Design of a novel APWM half-bridge DC-DC resonant converter with load-independent soft-switching and reduced circulating current," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2016, pp. 2491-2496, doi: 10.1109/APEC.2016.7468215.
- N. B. Y. Gorla, S. Kolluri, P. Das and S. K. Panda, "A new control scheme to improve load transient response of single phase PWM rectifier with Auxiliary Current Injection Circuit," 2016 IEEE Applied Power Electronics Conference and Exposition (APEC), Long Beach, CA, USA, 2016, pp. 552-557, doi: 10.1109/APEC.2016.7467926.
- S. M. Shiva, N. B. Y. Gorla, P. Das and S. K. Panda, "A new phase shedding and phase adding control scheme for interleaved DAB converter operating in IPOP configuration," 2015 IEEE International Telecommunications Energy Conference (INTELEC), Osaka, Japan, 2015, pp. 1-6, doi: 10.1109/INTLEC.2015.7572420.
- N. B. Y. Gorla, K. Ali, C. C. Lin and S. K. Panda, "Improved utilization of grid connected voltage source converters in smart grid through local VAR compensation," IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society, Yokohama, Japan, 2015, pp. 002532-002537, doi: 10.1109/IECON.2015.7392483.
- S. M. Shiva, N. B. Y. Gorla, P. Das and S. K. Panda, "Tap changing transformer based dual active bridge bi-directional DC-DC converter," 2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia), Seoul, Korea (South), 2015, pp. 2025-2030, doi: 10.1109/ICPE.2015.7168056.
- N. B. Y. Gorla and N. L. Narasamma, "A new active soft-switching circuit for full bridge converters," 2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), Bengaluru, India, 2012, pp. 1-6, doi: 10.1109/PEDES.2012.6484380.
Teaching

EE5514 - Renewable Energy Systems

EE5103 - Power Converters Design Laboratory

EE5021 - Power Converter Analysis and Design

EE4170 - Power Systems and Renewable Energy Laboratory

EE3170 - Electrical Machines Laboratory
Research Group

Ph.D Scholars:

1. Miss. Theertha P A (Research Topic: Reliability Assessment of Power Electronic Systems in Photovoltaic Applications)

2. Miss. Anju James (Research Topic: Fault Detection and Fault Tolerant Control of Transformer-less Photovoltaic Inverters)

M.S Students:

1. Miss. Arthy K (Research Topic: Highly Efficient and Power Dense DC-DC Converter for Mild-Hybrid Electric Vehicles)

2. Mr. Shubham Naryani (Research Topic: Matrix-based AC-DC Converter for Electric Vehicle Charging Applications)

Project Staff:

1. Mr. Nithin Francis
Additional Information
Title

OUTREACH
Description
Delivered a tutorial on “Solid State Transformers (SSTs) for Future Power Grids: Design and Control Challenges” in National Power Electronic Conference (NPEC) 2023 along with Dr. Sriram Vaisambhayana, IEEE Member and Dr. Sanjib Kumar Panda, IEEE Fellow, held at IIT Guwahati.

Delivered a tutorial on “Modular Multilevel Power Converters for Medium Voltage Grid Applications” in 49th Annual Conference of the IEEE Industrial Electronics Society (IES) - IECON 2023 along with Prof. Josep Pou, IEEE Fellow, Dr. Glen Ghias Farivar, IEEE SM and Dr. Ezequel Ramos, IEEE Member.

Delivered a tutorial on “Emerging and Disruptive Applications of Solid-State Transformers” in in 49th Annual Conference of the IEEE Industrial Electronics Society (IES) - IECON 2023 along with Dr. Jaydeep Saha, IEEE Member, Dr. Harish S. Krishnamoorthy, IEEE SM and Dr. Sanjib Kumar Panda, IEEE Fellow.

Delivered a tutorial on “Modular Multilevel Power Converters for Medium Voltage Grid Applications” in IEEE Southern Power Electronics Conference, SPEC 2022 along with Prof. Josep Pou, IEEE Fellow and Dr. Glen Ghias Farivar, IEEE SM.

Delivered a tutorial on “Solid State Transformers (SSTs): A Potential Game Changer for Future Power Distribution Grids” in 2022 IEEE International Conference on Power Electronics, Drives and Energy Systems (IEEE PEDES 2022) along with Dr. Jaydeep Saha, IEEE Member, Dr. Sriram Vaisambhayana, IEEE Member and Dr. Sanjib Kumar Panda, IEEE Fellow.

Organizing Chair for the special session titled “Fault identification and fault-tolerant control schemes for multi-modular power converter systems” in IEEE IECON 2021, Singapore.

Organizing Chair for the special session titled “Multilevel Converters: Topologies, Control and Protection” in IEEE ECCE-Asia 2021, Singapore.

Served as publication co-chair for 12th International Conference on Electrical and Electromechanical Energy Conversion – ECCE Asia (Energy Conversion Congress and Exposition – Asia, 2021) held in Singapore between May 24-27, 2021.

Guest lecturer for Power Electronics activity-based learning module (TEE3501) during semester-II AY2019/2020 and semester-II AY2020/2021 at NUS, carried out 20% of the teaching duty and taught magnetics for power electronics.

Delivered a tutorial on “Modular Multilevel Power Converters for Medium Voltage Grid Applications” in IEEE ECCE-Asia 2021 along with Prof. Josep Pou, IEEE Fellow and Dr. Glen Ghias Farivar, IEEE SM.

Delivered an expert lecture on Power Electronic Applications in Electric Vehicles and Energy Storage in TEQIP-III sponsored faculty development program organized by National Institute of Technology Karnataka, Surathkal, on 25th to 29th January 2021.
Title

Awards and Recognition
Description
Second price for the co-authored paper titled “A Comparison of PI-Based and Sorting-Based State of Charge Balancing Methods in Cascaded H-Bridge Converters" at the IEEE Energy Conversion Congress and Exposition (IEEE ECCE 2022) held on 09 - 13 Oct 2022 in Detroit, Michigan, USA (Virtual Conference).

Best paper award for the co-authored paper titled “Modulation of Direct Matrix-Based Dual-Active-Bridge (MB-DAB) AC-DC Converters" at the IEEE Energy Conversion Congress and Exposition - Asia (IEEE ECCE-Asia 2021) held on 24 - 27 May 2021 in Singapore (Virtual Conference).

Participated in IEEE’s Empower a Billion Lives (EBL) as a member of POWER@NUS team from National University of Singapore, Singapore. The team has won the best student team award for south asia regional round at IEEE PEDES 2018 and got shortlisted for global round.

Received three travel fellowships from IEEE Industrial Electronics Society, IEEE Singapore PELS/IAS Student chapter between 2015 and 2020.

Participated in SHELL Eco-Marathon challenge held in Singapore in 2016 as a part of electrical team from National University of Singapore, Singapore. The team has designed and developed an electric vehicle prototype from the scratch and was qualified for the final round along with few global teams.
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Projects
Description
Project Title: Compact and Efficient GaN-based Battery Pre-heater Module for Operations in Subzero Climatic Conditions [Funding Organization: IPTIF-IMPACT, Status: Ongoing]

Project Title: High Power Density and High Efficiency Isolated dc-dc Converter for Mild-Hybrid Electric Vehicles [Funding Organization: IITPKD-ERG, Status: Ongoing]