Zhang, Mengfan

Mengfan Zhan

PROJECT TITLE: Real-Time Impedance Identification and Control for Three-Phase Power Electronic Systems

PhD period: 2018.09.01 – 2021.08.31.
Section: Power Electronic Systems
Research Programme: Electronic Power Grid (eGrid)
Supervisor: Xiongfei Wang
Co-Supervisors: Mads Græsbøll Christensen and Dongsheng Yang
Contact Information

Collaborator: To be announced later. 
Funding: Dept. of Energy Technology.


With the development of the distributed generation systems, the application of grid-connected inverter is extremely widespread. The existence of the grid impedance will deteriorate the control of inverter and affect the system stability, which makes the harmonic resonance between the grid-connected inverter and the grid more and more frequent. The impedance analysis method has become an important method to study the interactive stability of a grid-connected inverter and grid.

Grid impedance affects the stability and control performance of grid-connected power electronic devices such as inverters used to integrate wind and solar energy. Adaptive control of such inverters to guarantee stability under different grid conditions requires real-time measurement of the grid impedance performed online by the inverters themselves. This Ph.D. project is expected to provide the systematic research results about real-time impedance identification and control for three-phase power electronic systems. The research results are expected to be helpful for the application of impedance analysis method into the power system research.


Publications in journals and conference papers may be found at VBN.