Open AccessSecond‐order RC: analysis, augmentation, and anti‐frequency‐variation for single‐phase grid‐tied inverter
Author(s) -
Li Dapeng,
Ye Yongqiang
Publication year - 2018
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2017.0808
Subject(s) - single phase , inverter , grid , phase (matter) , order (exchange) , variation (astronomy) , electronic engineering , electrical engineering , control theory (sociology) , computer science , mathematics , engineering , physics , voltage , business , geometry , control (management) , finance , quantum mechanics , artificial intelligence , astrophysics
High‐order repetitive control can deal with period variation. An augmented second‐order repetitive control (RC) scheme is presented to improve system performance under grid frequency variation. Firstly, the relationship between proportional‐integral/inertial, multiple‐resonant, multi‐quasi‐resonant control, and second‐order RC is analysed. The weight range of second‐order RC is discussed. Then, a second‐order RC approach augmented by proportional control is proposed for a single‐phase grid‐tied inverter. Experiments are provided to verify the superiority of second‐order RC compared with single‐order RC under frequency variation.