SMART Power Flow Controllers for Smart Grid Applications

October 12, 2017 @ 4:00 pm – 7:00 pm America/Toronto Timezone
1 Apple Hill Dr
Natick, MA 01760

Power Electronics Society

Kalyan K. Sen, PhD, PE, MBA – Fulbright Scholar

4:00 – 4:15 Arrival and sign in
4:15 – 6:15 Technical Presentation
6:15 – 7:00 Dinner (Pizza and Salad) and Networking

Increasing transmission capacity is essential to meet an increased demand of electricity, integration of renewable generation and so on. The power industry’s pressing need for the most economical ways to transfer bulk power along a desired path may be met by building new transmission lines, which is a long and costly process. Alternately, it may be quicker and cheaper to increase the available transfer capacity of the existing transmission lines with a power flow controller. Power flow control techniques have been practiced, from using inductors, capacitors, transformers and load tap changers in the earlier days of electrical engineering to power electronics-based solutions in recent years. Even though the costs and complexities of the available solutions vary widely, the basic underlying theory of power flow control is still the same as it always has been. To recommend proper solutions, SMART Power Flow Controllers (SPFC) are designed based on functional requirements and cost-effective solutions.

A SPFC is a Power Flow Controller that is derived from utilizing the best features of all the technical concepts that are developed in the power flow control area until now. A SPFC fulfills the true needs of a utility for its everyday use and they are high reliability, high efficiency, low installation and operating costs, component non-obsolescence, fast enough response for utility applications, high power density, interoperability, and easy relocation to adapt to changing power system’s needs while providing the optimal power flow control capability. The audience will hear from an expert who actually designed and commissioned a few power electronics-based power flow controllers since its inception in the 1990s.

The presentation will be of particular interest to all utility power engineering professionals. The required background is an equivalent of an electrical engineering degree with familiarity in power engineering terminology. Topics include principles of active and reactive power compensation; traditional power flow controllers – voltage regulating transformer, phase angle regulator, shunt inductor/capacitor, series inductor/capacitor; voltage-sourced converter (VSC), VSC-based technology and its implementation, comparison of simulation and field results; Sen Transformer.

Speaker: Kalyan Sen, a newly-selected Fulbright Scholar, is the Chief Technology Officer of Sen Engineering Solutions, Inc. ( that specializes in developing SMART power flow controllers—a functional requirements-based and cost-effective solution. He spent 30 years in academia and industry and became a Westinghouse Fellow Engineer. He was a key member of the Flexible Alternating Current Transmission Systems (FACTS) development team at the Westinghouse Science & Technology Center in Pittsburgh. He contributed in all aspects (conception, simulation, design, and commissioning) of FACTS projects at Westinghouse. He conceived some of the basic concepts in FACTS technology. He has authored or coauthored more than 25 peer-reviewed publications, 8 issued patents, a book and 4 book chapters in the areas of FACTS and power electronics. He is the coauthor of the book titled, Introduction to FACTS Controllers: Theory, Modeling, and Applications, IEEE Press and John Wiley & Sons, Inc. 2009, which is also published in Chinese and Indian paperback editions. He is the co-inventor of Sen Transformer. He received BEE, MSEE, and PhD degrees, all in Electrical Engineering, from Jadavpur University, India, Tuskegee University, USA, and Worcester Polytechnic Institute, USA, respectively. He also received an MBA from Robert Morris University, USA. He is a licensed Professional Engineer in the Commonwealth of Pennsylvania. He is a Distinguished Toastmaster who led District 13 of Toastmasters International as its Governor to be the 10th-ranking District in the world in 2007-8.

Kalyan, a Senior Member of IEEE, has served the organization in many positions. Under his leadership, IEEE Pittsburgh Section and its three chapters (PES, IAS and PELS) received the Best Section and Chapter Awards. His other past positions included Editor of the IEEE Transactions on Power Delivery (2002 – 2007), Technical Program Chair of the 2008 PES General Meeting in Pittsburgh, Chapters and Sections Activities Track Chair of the 2008 IEEE Sections Congress in Quebec City, Canada, PES R2 Representative (2010 and 2011) and Member of the IEEE Center for Leadership Excellence (CLE) Committee (2013, 2014). He has been serving as an IEEE PES Distinguished Lecturer since 2002. In that capacity, he has given presentations on power flow control technology more than 100 times in 15 countries. He is an inaugural class (2013) graduate of the IEEE CLE Volunteer Leadership Training (VOLT) program. Kalyan is the recipient of the IEEE Pittsburgh Section PES Outstanding Engineer Award (2004) and Outstanding Volunteer Service Award for reviving the local Chapters of PES and IAS from inactivity to world-class performance (2004). He has been serving as the Special Events Chair of the IEEE Pittsburgh Section for the last decade. He is the Region 1-3 Coordinator of Power Electronics Society. For more details, click on

Selected publications:
K. K. Sen, M. L. Sen, “Phase Angle Regulation Versus Impedance Regulation: Which Offers Greater Control Of Power Flow On the Grid?,” Today, February, 2017.
K. K. Sen, “Overview Of Voltage Regulation Schemes For Utility And Industrial Applications,” Today, September, 2015.
K. K. Sen, “Practical Power Flow Controller Brings Benefits of Power Electronics to the Grid,” Today, March, 2015.
M. L. Sen and K. K. Sen, “Introducing the SMART Power Flow Controller – an Integral Part of Smart Grid,” IEEE Electrical Power and Energy Conference, Paper no. 4, October 2012, London, Canada.