Seminar by Prof. Sanjib Kumar Panda @ 3pm

Title: Single-phase inverter control techniques for interfacing renewable energy sources with micro-grid – Parallel connected inverter topologies with active and reactive power flow control along with grid current shaping

Time: 20 April 2022, 3:00 pm

Venue: MMCR EE

Abstract: Renewable energy sources (RESs) have been receiving significant attention recently worldwide as a sustainable alternative type of energy supply in the energy mix. Inverters are being used to convert the dc voltage into ac voltage before being injected into the grid or isolated loads. In this presentation, a novel current control technique is proposed to control both active and reactive power flow from a renewable energy source feeding a micro-grid system through a single-phase parallel connected inverter. The parallel-connected inverter ensures active and reactive power flow from the grid with low current THD even in the presence of non-linear load. A p-q theory-based approach is used to find the reference current of the parallel-connected converter to ensure desired operating conditions at the grid terminal. The proposed current controller is simple to implement and gives superior performance over the conventional current controllers such as rotating frame PI controller or stationary frame Proportional Resonant (PR) controller. The stability of the proposed controller is ensured by the direct Lyapunov method. A new technique based on the Spatial Repetitive Controller (SRC) is also proposed to improve the performance of the current controller by estimating the grid and other periodic disturbances. Detailed experimental results are presented to show the efficacy of the proposed current control scheme along with the proposed non-linear controller to control the active and reactive power flow in a single-phase micro-grid under different operating conditions

Speaker’s Bio: Sanjib Kumar Panda (Student 98’, Member ’92, SM 00’, F 21’) received a Bachelor of Engineering Degree with 1st Class Honours from Sardar Vallabhabhai Regional College of Engineering and Technology, Surat, India, in 1983. He was awarded the Gold Medal for securing the highest marks not only amongst the B. Engg. (Electrical) but also for securing the highest marks amongst all the B. Engg. (Civil, Mechanical and Electrical) students. He also earned a Masters of Technology Degree from the Institute of Technology, Banaras Hindu University, Varanasi, India in 1987. He was awarded the Gold Medal for securing the highest marks amongst all the M. Tech. (Electrical) students. Subsequently, he earned a PhD. Degree from the University of Cambridge, U.K., in 1991. He was awarded the Nehru Cambridge Fellowship and Overseas Research Studentship from the Cambridge Commonwealth Trust for Cambridge University for his PhD studies, 1987-1991.

He joined the Department of Electrical and Computer Engineering at the National University of Singapore as a Lecturer in 1992. He is currently serving as an Associate Professor and Director of the Power & Energy Research Area. He has served as Director (Education) at the Design Technology Institute, a joint-venture between NUS and TU/e, The Netherlands and funded by EDB, Singapore. He has served as the Group Head of the Drives, Power and Control Group from 2007-2009. He was appointed as Area Director, Power & Energy Research Group of the Department of Electrical & Computer Engineering at NUS on 1st January 2010 and serving in this position till date.

Dr. Panda has won the Annual Teaching Excellence Award at the National University of Singapore in 2004 and 2009. Besides these two University Level Awards, he has also been awarded several Teaching Awards at the Faculty of Engineering and at the Department of Electrical and Computer Engineering Department consistently since the year 2000.

Dr. Panda has carried out extensive research in various areas of control of electric drives and power electronic converters. He has co-authored 1 book, several book chapters, published more than 450 papers in international refereed journals and conferences and holds 6 patents to his credit. Dr. Panda has an h-index of 44 and has citations almost close to 10,000. He has received research funding to the tune of S$25mil over the past 15 years or so. Dr. Panda is the co-founder of three start-up companies: (1) ENBED Pte. Ltd., (2) REPMIX Pte. Ltd. and (3) SPCSCAN Pte. Ltd. along with his PhD students and research staff. His current research interests are in high-performance control of motor drives, control of distributed renewable energy sources and their integration with grid, condition monitoring, preventive and predictive maintenance.

Dr. Panda has been an active member of the IEEE. He has served in various capacities as Chapter Officer in the IEEE Singapore Section’s Joint Power Electronics and Industry Applications Society Chapter since 1994 till date. He has served in various capacities in the IEEE Singapore Section during the period 2000-2004 and served as the Section Chairman during the period 2004. He was the recipient of the IEEE 3rd Millennium Medal. He was the Organizing Chairman for the International IEEE Power Electronics and Drives Systems Conference (PEDS) in 2003. Dr. Panda served as the founding Chairman for the International Conference on Sustainable Energy Technologies (ICSET) in 2008. He was awarded the Best Volunteer Award by the IEEE Singapore Section in 2006. He was awarded the Best Volunteer Award by IEEE R-10 in 2014. Since 2012, Dr. Panda has been a volunteer serving in the Membership and Chapter Development for the IEEE PELS and presently serving as R-10 Coordinator. The IEEE PELS has seen the consistent membership growth rate of more than 15% for the R-10. Dr. Panda also proposed the Regional Distinguished Lecture (RDL) Program for the IEEE PELS and the initiated as a part of the R-10 RDL Speakers to be implemented in June 2020. Dr. Panda is the Organizing Chair for the IEEE ECCE-ASIA 24-27th May, 2021 to be held at Singapore. Dr. Panda has also served as a Member in the Program Committee in the IEEE Section Congress 2014 at Amsterdam, The Netherlands. He also presented in the IEEE Section Congress 2017 at Sydney, Australia. Dr. Panda has been serving as an Associate Editor of the IEEE Transactions in Power Electronics, the Journal of Emerging and Selected Topics in Power Electronics since 2012 till date. Dr. Panda has been elevated to the IEEE Fellowship w.e.f. form 1st Jan. 2021. Dr. Panda is the IEEE PELS DL for the period 1st Jan. 2022 – 31st December 2023.

All are welcome.