Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 62, Issue 3, Pages 1679-1682Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2014.2341594
Keywords
Complex filters; modeling; synchronous reference frame phase-locked loop (SRF-PLL)
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Funding
- Abadan Branch, Islamic Azad University
- Research Programme on Microgrids, Department of Energy Technology, Aalborg University
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Despite the wide acceptance and use of the conventional synchronous reference frame phase-locked loop (SRF-PLL), no transfer function describing its actual input-output relationship has been developed so far. Arguably, the absence of such transfer function has hampered the application of SRF-PLL as a filter or controller inside the closed-loop control systems. In this paper, the transfer function describing the actual input-output relationship of the conventional SRF-PLL is presented. Using this transfer function, it is shown that the conventional SRF-PLL is a first-order adaptive complex bandpass filter. The accuracy of this transfer function is confirmed through numerical results.
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