Open AccessResearch on Dual Mode Unified Control Strategy of Grid Connected Inverter Based on Droop Control
Author(s) -
Ying Zhang,
Wei Jiang,
Xiaohuan Wang
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1754/1/012117
Subject(s) - voltage droop , islanding , inverter , grid , control theory (sociology) , computer science , mode (computer interface) , voltage , dual (grammatical number) , microgrid , dual mode , control (management) , power (physics) , grid tie inverter , electronic engineering , engineering , maximum power point tracking , distributed generation , electrical engineering , voltage source , mathematics , renewable energy , physics , art , artificial intelligence , literature , operating system , geometry , quantum mechanics
There is a big difference between the two modes of grid connected inverter in micro-grid operation. In order to avoid large voltage and current impact, advanced control strategy is needed to realize smooth conversion during operation mode switching. A droop control method based on voltage amplitude change rate is proposed, which is suitable for dual-mode unified control of inverter. While ensuring the stability of the system, the reactive power of the inverter can be accurately shared during islanding operation. This method can realize smooth switching between grid connected inverter and islanding mode. The feasibility of the method is verified by simulation and experiment.