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| Content Provider | IET Digital Library |
|---|---|
| Author | Bacon, Vinícius Dario Silva, Sérgio Augusto Oliveira Da |
| Abstract | This study proposes phase-locked-loop (PLL) algorithms, which are employed to improve the performance related to the estimation of the phase angle, as well as the frequency, in three-phase systems under utility voltage disturbances. The proposed PLL schemes are based on the three-phase instantaneous active power (3pPLL), which is composed of non-autonomous adaptive filters (AFs) operating in conjunction with a positive-sequence detectors (PSDs), yielding the AF-PSD-3pPLL algorithms operating in both three-phase (abc-axis) and two-phase (αβ-axis) stationary reference frames. The AFs are used to extract the fundamental components of the utility voltages, allowing an adequate rejection of harmonic disturbances, whereas the PSDs at fundamental utility frequency are employed for rejecting the power quality problem related to the utility unbalances. A complete stability analysis of the PLL systems is carried out. In addition, to validate the theoretical development, the dynamic response and the robustness of the proposed AF-PSD-3pPLL schemes are evaluated by means of simulation and experimental tests, taking into account utility disturbances, such as voltage harmonics and unbalances, voltage sags, phase-angle jumps and frequency variations. The effectiveness of the proposed PLL schemes are emphasised by means of a comparative analysis with the conventional 3pPLL algorithm. |
| Starting Page | 2237 |
| Ending Page | 2250 |
| Page Count | 14 |
| ISSN | 17554535 |
| Volume Number | 8 |
| e-ISSN | 17554543 |
| Issue Number | Issue 11, Nov (2015) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/8/11 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2014.0808 |
| Journal | IET Power Electronics |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Adaptive Filter AF-PSD-3pPLL Algorithm Demodulator Discriminators And Mixers Dynamic Response Frequency Variations Fundamental Utility Frequency Harmonic Disturbances Harmonics Modulator Nonautonomous Adaptive Filter Other Power Apparatus And Electric Machine Phase Angle Estimation Phase Locked Loop Phase-angle Jumps Positive-sequence Detector Power Electronics Power Harmonic Filter Power Quality Problem Power Supply Power Supply Quality Stability Analysis Stationary Reference Frames Supervisory Circuit Three-phase Instantaneous Active Power Three-phase Phase-locked-loop Algorithm Three-phase System Utility Unbalances Utility Voltage Utility Voltage Disturbances Voltage Harmonics Voltage Sag Voltage Unbalances |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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