Stability Analysis of Grid-connected PV Farms with High Switching Frequency Power Electronics
- Resource Type
- Conference
- Authors
- Mahdavyfakhr, Mohammad; Ziyat, Isla; Palmer, Patrick
- Source
- IECON 2021 – 47th Annual Conference of the IEEE Industrial Electronics Society Industrial Electronics Society (IECON), 2021 47th Annual Conference of the IEEE. :1-5 Oct, 2021
- Subject
- Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Transportation
Industrial electronics
Switching frequency
Frequency-domain analysis
Stability criteria
Switches
Power system stability
Control systems
Dynamic behavior
high-frequency switching
solar PV farms
stability
- Language
- ISSN
- 2577-1647
High Switching Frequency Power Electronic (HSFPE) have a different dynamic behavior than conventional power electronics since HSFPE with faster switching allows an increased controller cross-over frequency. This paper assesses the dynamic characteristics of solar PV farms with a large number of HSFPE while connecting to weak grids. This is done by first obtaining closed-loop small-signal models of HSFPE and then adopting the Impedance Stability Criterion. It is demonstrated, through time- and frequency-domain analysis, that PV farms with HSFPE have far better dynamic characteristics and stability margins. Therefore, it is envisioned that future solar PV farms with HSFPE will suffer less from stability issues.