A prefilter to improve the performance of transfer delay-based synchronization technique under distorted grid conditions
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DOI: 10.1016/j.egyr.2020.11.081
Abstract: Abstract The transfer delay-based adaptive frequency-locked loop (TD-AFLL) is a recently proposed synchronization technique. It has fast respond speed in ideal grid, but the performance degrades significantly in distorted grid. In this paper, a prefilter… read more here.
Keywords: technique; distorted grid; transfer delay; synchronization technique ... See more keywords
Impedance-Based Harmonic Current Suppression Method for VSG Connected to Distorted Grid
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DOI: 10.1109/tie.2019.2934084
Abstract: For the virtual synchronous generator (VSG) connected to the distorted grid, it is difficult to address the distorted grid current issue by the conventional harmonic suppression methods. To address this issue, in this article, we… read more here.
Keywords: connected distorted; vsg; vsg connected; impedance ... See more keywords
Multiple Nonlinear Harmonic Oscillator-Based Frequency Estimation for Distorted Grid Voltage
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DOI: 10.1109/tim.2019.2931065
Abstract: In the presence of nonlinear loads and various disturbances, harmonics and dc bias may corrupt the grid voltage signal leading to distorted grid. Frequency estimation of distorted grid signal is a challenging issue. In this… read more here.
Keywords: grid voltage; nonlinear harmonic; frequency estimation; frequency ... See more keywords
Improved Frequency Locked Loop Based Synchronization Method for Three-Phase Grid-Connected Inverter under Unbalanced and Distorted Grid Conditions
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DOI: 10.3390/en12061023
Abstract: To quickly and accurately estimate the parameters of the fundamental positive- and negative-sequence under the unbalanced and distorted grid voltage, a synchronization method is presented in this paper. The proposed method is based on both… read more here.
Keywords: improved frequency; synchronization method; frequency; unbalanced distorted ... See more keywords