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Symmetrical Pole Placement Method-Based Unity Proportional Gain Resonant and Gain Scheduled Proportional (PR-P) Controller With Harmonic Compensator for Single-Phase Grid-Connected PV Inverters
IEEE Access, Volume: 9, Pages: 93165 - 93181
Swansea University Authors:
Cagfer Yanarates, Zhongfu Zhou
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DOI (Published version): 10.1109/access.2021.3092827
Abstract
In this paper, a symmetrical pole placement Method-based Unity Proportional Gain Resonant and Gain Scheduled Proportional (PR-P) Controller is presented. The proposed PR-P controller resolved the issues that are tracking repeating control input signal with zero steady-state and mitigating of 3rd ord...
| Published in: | IEEE Access |
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| ISSN: | 2169-3536 2169-3536 |
| Published: |
USA
Institute of Electrical and Electronics Engineers (IEEE)
2021
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| Online Access: |
Check full text
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa57302 |
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| Abstract: |
In this paper, a symmetrical pole placement Method-based Unity Proportional Gain Resonant and Gain Scheduled Proportional (PR-P) Controller is presented. The proposed PR-P controller resolved the issues that are tracking repeating control input signal with zero steady-state and mitigating of 3rd order harmonic component injected into the grid associated with the use of PI controller for single-phase PV systems. Additionally, the PR-P controller has overcome the drawbacks of frequency detuning in the grid and increase in the magnitude of odd number harmonics in the system that constitute the common concerns in the implementation of conventional PR controller developed as an alternative to PI controller. Moreover, the application of an unprecedented design process based on changing notch filter dynamics with symmetrical pole placement around resonant frequency overcomes the limitations that are essentially complexity and dependency on the precisely modelled system associated with the use of various controllers such as Adaptive, Predictive and Hysteresis in grid connected PV power generation systems. The proposed PR-P controller was validated employing Photovoltaic emulator (PVE) consisting of a DC-DC Buck power converter, a maximum power point tracking (MPPT) algorithm and a full-bridge grid connected inverter designed using MATLAB/Simulink system platform. Details of the proposed controller, Photovoltaic emulator (PVE) simulations, analysis and test results were presented in the paper. |
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| Keywords: |
Proportional resonant current controller, harmonic compensator, buck converter based PVemulator, MPPT |
| College: |
Faculty of Science and Engineering |
| Funders: |
This work was supported in part by the European Regional Development Fund (ERDF) through the FLEXIS Project |
| Start Page: |
93165 |
| End Page: |
93181 |