Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/144654
Title: Enhancing the harmonic current sharing performance of low-switching-frequency inverters though dynamic impedance reshaping
Authors: Qi, Yang
Tang, Yi
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2018
Source: Qi, Y., & Tang, Y. (2018). Enhancing the harmonic current sharing performance of low-switching-frequency inverters though dynamic impedance reshaping. Proceedings of 2018 IEEE Energy Conversion Congress and Exposition (ECCE), 3150-3155. doi:10.1109/ECCE.2018.8557945
Abstract: In islanded microgrids, harmonic currents of nonlinear loads are expected to be properly shared among parallel inverters, and this is normally achieved by shaping the effective harmonic impedance, i.e., the sum of inverter output impedance and transmission line impedance, through virtual impedance controls. However, for low-frequency inverters, harmonic virtual impedances may not be directly implemented due to the bandwidth limitation of the voltage controller. Besides, line impedances with mismatched magnitudes and angles can lead to inaccurate harmonic current sharing results. To solve these issues, this paper proposes an orthogonal impedance-sharing control, which can dynamically adjust the phase and magnitude of the effective impedance. The proposed method is widely applicable with different line impedances, and its effectiveness is validated though simulation/experimental results.
URI: https://hdl.handle.net/10356/144654
ISBN: 978-1-4799-7312-5
DOI: 10.1109/ECCE.2018.8557945
Rights: © 2018 IEEE. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:EEE Conference Papers

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