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Filter‐based perturbation control of low‐frequency oscillation in voltage‐mode H‐bridge DC–AC inverter
Author(s) -
Lu Weiguo,
Zhao Naikuan,
Wu Junke,
El Aroudi Abdelali,
Zhou Luowei
Publication year - 2015
Publication title -
international journal of circuit theory and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.364
H-Index - 52
eISSN - 1097-007X
pISSN - 0098-9886
DOI - 10.1002/cta.1977
Subject(s) - control theory (sociology) , inverter , h bridge , oscillation (cell signaling) , perturbation (astronomy) , voltage , low frequency oscillation , filter (signal processing) , physics , engineering , computer science , electrical engineering , control (management) , electric power system , chemistry , power (physics) , quantum mechanics , artificial intelligence , biochemistry
Summary This paper presents a new additional perturbation control method for suppressing low‐frequency oscillation in voltage‐mode H‐bridge DC–AC inverter. The stability boundary of the H‐bridge inverter is investigated from its small‐signal averaged model. High input voltage and light load would cause low‐frequency oscillation in this system. To this end, a filter‐based perturbation control (FBPC) is proposed for eliminating this oscillation, by using an analog filter to extract the unexpected signal and applying it to the control loop. Theoretical results show a larger stability range of the controlled system with the proposed FBPC. The simulation and experiment results show that the proposed controller can control the low‐frequency oscillation in H‐bridge DC–AC inverter well. Copyright © 2014 John Wiley & Sons, Ltd.