Adaptive fuzzy controller for electric spring

Electric Spring (ES) provides one new solution for solving various power quality problems, which caused by intermittent and unsustainable renewable energy sources (RES). But on the user side, traditional controllers have weak robustness and adaptive capacity. For optimizing the dynamic performance of ES, this paper presents an adaptive fuzzy controller (AFC) with a regulatory factor, which makes a fuzzy controller (FC) has stronger robustness and better adaptive capacity. Through making comparison among Quasi-PR controller, FC and AFC in MATLAB in supply voltage fluctuating, load changes suddenly and injecting harmonic, ES' stronger robustness and better dynamic performance under the control of AFC was certified. © 2020 International Information and Engineering Technology Association. All rights reserved.