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| Content Provider | IET Digital Library |
|---|---|
| Author | Wang, Jianguo Wang, Jihong Luo, Xing |
| Abstract | A novel phase-locked loop (PLL) with simple structure is proposed in the present work for three-phase power converters under adverse grid conditions. Based on a synchronous rotating frame PLL (SRF-PLL), multi-resonant harmonic compensators with the ability of accommodating frequency deviations are employed in the feedback path of a pre-filter. As a result, the negative-sequence component and harmonic distortions of grid voltage can be attenuated. Different from existing methods, only classical regulators are used, avoiding complicated networks for the decoupling of unbalance and harmonics and thus greatly simplifying the control algorithm. The proposed method is analysed and designed in both the continuous s-domain and discrete z-domain, whereby stable, fast, accurate, and robust responses are achieved. Simulation results have been obtained to show the improved performance of the proposed PLL compared with two widely used methods. |
| Starting Page | 3895 |
| Ending Page | 3899 |
| Page Count | 5 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 17, Jun (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2019/17 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8100 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2019-01-22 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | Adverse Grid Condition Classical Regulators Complicated Network Control of Electric Power System Demodulator Discriminators And Mixers Distorted Grid Condition Feedback Path Frequency Deviations Grid Voltage Harmonic Distortion Harmonics Modulator Multiresonant Harmonic Compensators Negative-sequence Component Novel Phase-locked Loop Novel PLL Phase Locked Loop Power Converter Power Grid Power Supplies to Apparatus Power Supply Quality Power System Harmonics Pre-filter Simple Structure Simulation Result SRF-PLL Synchronisation Synchronous Rotating Frame PLL Three-phase Power Converter Unbalance Unbalanced Grid Condition |
| Content Type | Text |
| Resource Type | Article |
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