Decentralized and distributed solutions for microgrids

Add to your list(s) Download to your calendar using vCal

• Dr. Qianwen Xu, Nanyang Technological University, Singapore
• Monday 16 March 2020, 13:30-14:30
• 1109b.

If you have a question about this talk, please contact Fei Teng.

Modern power grids are shifting towards more renewable, more power electronics, more DC and more distributed. The conventional centralized management is not suitable, calling for decentralized/distributed solutions for the complex future grids. Microgrids are building blocks for the future grids. There are many operational challenges to be addressed, including the critical demand-supply balance under the intermittent renewable generations, the economic operation requirement and the stability issue emerged from the high penetration of power electronic converters. This talk will present decentralized and distributed solutions for the above challenges. To compensate the power unbalance caused by the intermittency of renewable generations, a decentralized power management strategy is proposed for hybrid energy storage systems to achieve dynamic power sharing, bus voltage restoration and supercapacitor state of charge recovery; a distributed finite-time controller is further proposed to achieve bus voltage restoration and state of charge balancing of batteries. To achieve economic operation, an incremental cost based droop scheme is proposed for economic power sharing in autonomous AC, DC and hybrid AC/DC microgrids; a distributed and robust energy management system is proposed for networked hybrid microgrids. For stability issue, advanced control strategies are proposed for classical DC/DC converter, interleaved converter and multiple paralleled converter systems for stabilizing DC microgrids with constant power loads in a large signal sense.

Bio： Dr. Qianwen Xu received the B.Sc. degree from Tianjin University, China in 2014 and PhD degree from Nanyang Technological University, Singapore in 2018, both in electrical engineering. She has worked as a research associate in Hong Kong Polytechnic University and a postdoc research fellow in Aalborg University. Currently, she is a Wallenberg-NTU Presidential Postdoc Fellow in Nanyang Technological University in Singapore. She is also awarded the Alexander von Humboldt Research Fellowship for Postdoctoral Researchers, Chinese Government Award for Outstanding Self-Financed Students Abroad 2018, Excellent Doctorate Research Work in Nanyang Technological University, etc. Her research interests include control, stability, reliability and optimization of microgrids and power electronics based power systems.

This talk is part of the Control and Power Seminars series.

This talk is included in these lists:

• 1109b
• Andrea Picciau's list
• Control and Power Seminars

Note that ex-directory lists are not shown.