Abstract
Despite the wide acceptance and use of the conventional synchronous reference frame phase-locked loop (SRFPLL) 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 letter, the transfer function describing the actual inputoutput 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. It is also shown that this transfer function can be useful for tuning of SRF-PLL parameters. The accuracy of this transfer function is confirmed through numerical results.
such transfer function has hampered the application of SRF-PLL as a filter or controller inside the closed-loop control systems. In this letter, the transfer function describing the actual inputoutput 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. It is also shown that this transfer function can be useful for tuning of SRF-PLL parameters. The accuracy of this transfer function is confirmed through numerical results.
Original language | English |
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Journal | I E E E Transactions on Industrial Electronics |
Volume | 62 |
Issue number | 3 |
Pages (from-to) | 1679-1682 |
Number of pages | 4 |
ISSN | 0278-0046 |
DOIs | |
Publication status | Published - Mar 2015 |
Keywords
- Synchronous reference frame phase-locked loop (SRF-PLL)
- Complex filters
- Modeling