Pay, M.L., Christensen, J., He, F. et al. (3 more authors) (2023) A comparative study of FLL and PLL in boost PFC converter control for smart greenhouse farming application. In: 2023 IEEE International Conference on Agrosystem Engineering, Technology & Applications (AGRETA) Proceedings. 2023 IEEE International Conference on Agrosystem Engineering, Technology & Applications (AGRETA), 09 Sep 2023, Shah Alam, Malaysia. Institute of Electrical and Electronics Engineers (IEEE) ISBN 9798350347340
Abstract
LED lights have become very popular recently for smart farming applications, where they provide artificial light as the substitute for sunlight in a greenhouse or indoor farming environment. To ensure a low total operational cost and improve the efficiency of farming in those environments, it is imperative that the overall LED lighting system is energy efficient. LED is a dc system, whereas the grid is an ac system. As such, an LED driver is needed to perform the necessary voltage conversion. The boost power factor correction (PFC) converter is a popular LED driver that provides output voltage regulation and power factor correction at the same time. As the LED driver is grid-connected, its control system requires real-time estimation of the grid voltage parameter information for reference current generation. In this study, a comparison between frequency-and phase-locked loops as the grid detection method inside the converter control system is provided. For the phase-locked loop (PLL), a single-phase quasi-type-1 structure is considered. It is then compared with the conventional second-order generalised integrator (SOGI)frequency-locked loop (FLL). Comprehensive numerical studies are performed to evaluate the performance of FLL and PLL in challenging grid voltage cases. Results show that the source current has a lower total harmonic distortion when PLL is used as the synchronisation tool over the FLL counterpart. This can be attributed to the use of moving average filter in the PLL, which provides additional harmonic robustness compared to FLL. Lower distortion by the PLL method will the make LED driver, consequently smart farming more energy efficient.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. Except as otherwise noted, this author-accepted version of a paper published in 2023 IEEE International Conference on Agrosystem Engineering, Technology & Applications (AGRETA) Proceedings is made available via the University of Sheffield Research Publications and Copyright Policy under the terms of the Creative Commons Attribution 4.0 International License (CC-BY 4.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | Power Factor Correction; Frequency-Locked Loop; Boost Converter; Phase-Locked Loop |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Advanced Manufacturing Institute (Sheffield) > Nuclear Advanced Manufacturing Research Centre |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 03 Oct 2023 15:28 |
Last Modified: | 03 Oct 2023 15:29 |
Status: | Published |
Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
Refereed: | Yes |
Identification Number: | 10.1109/agreta57740.2023.10262537 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:203907 |