Open AccessResearch on Improved Droop Control of AC-DC Microgrid Bidirectional Converter Based on Power
Author(s) -
Wenchao Cai,
Meirong Gao,
Junqing Jia,
Chao Lv,
Shan Guo,
He Li,
Yang Yang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/514/4/042052
Subject(s) - voltage droop , microgrid , control theory (sociology) , power (physics) , inverter , computer science , voltage , ac power , power balance , control (management) , power control , engineering , electrical engineering , voltage source , physics , quantum mechanics , artificial intelligence
The bidirectional converter in AC / DC hybrid microgrid is an important link to balance the power on both sides of AC and DC, Its control method is extremely important. This paper proposes an improved droop control strategy for bidirectional converter using DC-side power amount control. This control can autonomously and smoothly switch in rectifyer, inverter and idle modes. Utilizing DC-side power control avoids normalized calculations. Strategy meets two modes of island and grid connection, eliminating the need for multiple control strategy switches. Simulation results show that the DC bus voltage and AC frequency are near the rated value, which guarantees the stable operation of the AC-DC hybrid microgrid.