AC Networks With Microgrids: Passivity-Based Controllers in Single Phase Electric Network

Abstract

—This paper is an investigation of the possible integration of distributed energy resources (DERs) in single-phase alternating current networks, using voltage-controlled converters, based on passivity-based control theory. In closed-loop operation, Hamiltonian representations facilitate the development of passive controllers that guarantee stability. The trajectory tracking problem can be solved as a regulation problem by transforming the non-autonomous dynamical model into an incremental model. In this work, the primary contribution is the ability to control active and reactive power flows between DERs and the grid according to the availability of primary energy resources and converter capacity. Simulated results indicate that all passive controllers achieve the control objective, maintaining asymptotic stability and achieving the same dynamic performance as integral proportional controllers. SimPowerSystems library is used to develop all simulations under the MATLAB/Simulink environment. The paper presents a novel approach to integrating distributed energy resources into single-phase alternating current networks, utilizing voltage-controlled converters and leveraging passivity-based control theory.

Keywords:

• passivity–based control
• distributed energy resources
• voltage source converters
• single–phase ac grids

DISCLOSURE STATEMENT

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

S. Hemalatha

S. Hemalatha is currently working as Professor in the Department of Electrical and Electronics Engineering at St.Joseph’s Institute of Technology, Chennai. She obtained her Ph. D under the Faculty of Electrical Engineering from Anna University (2013), Chennai. She completed her M.E in NIT, Trichirappalli in 2003.She completed her BE in Alagappa Chettiar college of Engineering and Technology, Karaikudi in the year 1994. She has published more than 8 Scopus indexed journals and 1 SCI journals in her field. She has 26 years of teaching experience. Her area of interest is Power system restoration, Renewable energy and Micro Grid.

G. Swapna

Ganapaneni Swapna completed her M. Tech. from JNTU Kakinada. She has completed her Ph.D. from K L Deemed to be University. Her area of research includes Power Systems, Electric Vehicles in smart grid and Energy management using Electric Vehicles. She has published research papers in various international journals. Now, she is working as Assistant Professor in EEE Dept., K L University, Guntur, Andhra Pradesh, India.

S. Govinda Rao

S Govinda Rao working as Professor in Computer Science and Engineering at Gokaraju Rangaraju Institute of Engineering and Technology (GRIET), Hyderabad. completed his Ph.D from Jawaharlal Nehru Technological University Kakinada (JNTUK) year of 2017 under the Supervision of Dr A Govardhan, Rector at JNTUH. His Ph.D work on “A Novel Approach in K Means Clustering Algorithm to Evaluate and Assess H and G Indices of Scientific Authors”. He is around 18 years of Teaching and Research Experience. He completed M.Tech. From A.U College Of engineering at Andhra University, Visakhapatnam year of 2006. His Research interesting areas are Data Mining, Computer Networking, network Security, Machine Learning and its application areas. He had published around 35 papers in various International SCI/Scopus Indexed Journals and Conferences and also he has Filed 2 Patents from Intellectual Property of India.

C. Suresh

C. Suresh working as Professor in the Department of Electrical and Electronics Engineering, Dhanalakshmi Srinivasan University, Samayapuram, Trichy. He had obtained Bachelor of Electrical and Electronics Engineering Degree from Alagappa Chettiar College of Engineering and Technology, Madurai Kamaraj University in 1996. Master of Engineering in Power Electronics & Drives from Alagappa Chettiar College of Engineering and Technology, Anna University Chennai in 2008. Ph.D in Power Electronics at Prist University Thanjavur. Filed four Patents.