Enhanced Frequency Adaptive Demodulation Technique For Grid-Connected Converters
Ahmed, Hafiz and Biricik, Samet and Benbouzid, Mohamed (2020) Enhanced Frequency Adaptive Demodulation Technique For Grid-Connected Converters. IEEE Transactions on Industrial Electronics. ISSN 0278-0046
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Abstract
This paper presents an enhanced frequency adaptive demodulation technique for grid-synchronization of grid-connected converters (GCC) in variable frequency condition. Demodulation works by generating
demodulated voltages which contain undesired double frequency components. As a result, high-order low-pass filters (LPF) with high cutoff frequency are required to eliminate the undesired components. This reduces the dynamic performance. Frequency adaptive demodulation technique enhances the dynamic performance by rejecting the double frequency components as opposed to filtering, however, at the cost of additional computational complexity. This paper overcomes this problem by using double demodulation without recreating the double frequency component for rejection purpose. This reduces the computational complexity significantly. Suitability of proposed method is verified through
numerical simulation and experimental study. Comparative study with existing frequency adaptive demodulation and second-order generalized integrator phase-locked loop (SOGI-PLL) techniques demonstrate the validity and performance improvement by the proposed technique.
| Item Type: | Article |
|---|---|
| Identification Number: | 10.1109/TIE.2020.3029485 |
| Dates: | Date Event 16 September 2020 Accepted 13 October 2020 Published Online |
| Uncontrolled Keywords: | Demodulation, Frequency Estimation, PLL |
| Subjects: | CAH10 - engineering and technology > CAH10-01 - engineering > CAH10-01-08 - electrical and electronic engineering |
| Divisions: | Faculty of Computing, Engineering and the Built Environment > College of Engineering |
| Depositing User: | Hafiz Ahmed |
| Date Deposited: | 16 Oct 2020 09:45 |
| Last Modified: | 20 Jun 2024 11:50 |
| URI: | https://www.open-access.bcu.ac.uk/id/eprint/10125 |
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