Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems
In this paper, a model-based maximum power point tracking (MPPT) technique is presented for a two-stage grid-connected photovoltaic (PV) system, where the loci of the maximum power points (MPPs) is specified accurately based on a new formulation. In this formulation, the effect of both irradiance an...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9766333/ |
| _version_ | 1818201552203022336 |
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| author | Mostafa Ahmed Ibrahim Harbi Ralph Kennel Jose Rodriguez Mohamed Abdelrahem |
| author_facet | Mostafa Ahmed Ibrahim Harbi Ralph Kennel Jose Rodriguez Mohamed Abdelrahem |
| author_sort | Mostafa Ahmed |
| collection | DOAJ |
| description | In this paper, a model-based maximum power point tracking (MPPT) technique is presented for a two-stage grid-connected photovoltaic (PV) system, where the loci of the maximum power points (MPPs) is specified accurately based on a new formulation. In this formulation, the effect of both irradiance and temperature is taken into consideration, whereas the irradiance is estimated to reduce the cost of the system and enhance its reliability. Furthermore, constant power generation (CPG) is integrated with the developed MPPT method to facilitate other power regulation schemes in the PV system. The proposed methodology is compared with the well-known perturb and observe (P&O) method for evaluation. Additionally, a modified version of the P&O is included in the comparison for better assessment. The effect of different partial shading conditions on the system’s performance is also investigated. The DC-link PI controller is replaced with a new adaptive DC-link controller to enhance the transient behavior of the PV system. Moreover, the suggested DC-link controller removes the DC offsets, which appear in case of gradient increase or decrease in the input PV power. In contrast to the conventional PI controller, which has poor performance at such circumstances. The active and reactive power exchange with the grid is managed using a computationally efficient finite-set model predictive control (FS-MPC) algorithm. Furthermore, switching frequency minimization is added as a secondary objective using a weighting factorless procedure. The grid-voltage sensors are eliminated and estimated using an extended Kalman filter (EKF). The overall control strategy is evaluated using experimental implementation, hardware-in-the-loop (HIL), and matlab/simulink. |
| first_indexed | 2024-12-12T02:55:22Z |
| format | Article |
| id | doaj.art-1791408031c14bd0b782a4a9b0338004 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-12T02:55:22Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-1791408031c14bd0b782a4a9b03380042022-12-22T00:40:47ZengIEEEIEEE Access2169-35362022-01-0110485514856810.1109/ACCESS.2022.31722929766333Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV SystemsMostafa Ahmed0https://orcid.org/0000-0002-9036-059XIbrahim Harbi1https://orcid.org/0000-0001-8319-6245Ralph Kennel2https://orcid.org/0000-0003-4997-0043Jose Rodriguez3Mohamed Abdelrahem4https://orcid.org/0000-0003-2923-2094Chair of High-Power Converter Systems, Technical University of Munich (TUM), Munich, GermanyChair of High-Power Converter Systems, Technical University of Munich (TUM), Munich, GermanyChair of High-Power Converter Systems, Technical University of Munich (TUM), Munich, GermanyFaculty of Engineering, Universidad San Sebastian, Santiago, ChileChair of High-Power Converter Systems, Technical University of Munich (TUM), Munich, GermanyIn this paper, a model-based maximum power point tracking (MPPT) technique is presented for a two-stage grid-connected photovoltaic (PV) system, where the loci of the maximum power points (MPPs) is specified accurately based on a new formulation. In this formulation, the effect of both irradiance and temperature is taken into consideration, whereas the irradiance is estimated to reduce the cost of the system and enhance its reliability. Furthermore, constant power generation (CPG) is integrated with the developed MPPT method to facilitate other power regulation schemes in the PV system. The proposed methodology is compared with the well-known perturb and observe (P&O) method for evaluation. Additionally, a modified version of the P&O is included in the comparison for better assessment. The effect of different partial shading conditions on the system’s performance is also investigated. The DC-link PI controller is replaced with a new adaptive DC-link controller to enhance the transient behavior of the PV system. Moreover, the suggested DC-link controller removes the DC offsets, which appear in case of gradient increase or decrease in the input PV power. In contrast to the conventional PI controller, which has poor performance at such circumstances. The active and reactive power exchange with the grid is managed using a computationally efficient finite-set model predictive control (FS-MPC) algorithm. Furthermore, switching frequency minimization is added as a secondary objective using a weighting factorless procedure. The grid-voltage sensors are eliminated and estimated using an extended Kalman filter (EKF). The overall control strategy is evaluated using experimental implementation, hardware-in-the-loop (HIL), and matlab/simulink.https://ieeexplore.ieee.org/document/9766333/PV systemsmodel-based MPPTirradiance estimationadaptive DC-link controlFS-MPCweighting factorless |
| spellingShingle | Mostafa Ahmed Ibrahim Harbi Ralph Kennel Jose Rodriguez Mohamed Abdelrahem Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems IEEE Access PV systems model-based MPPT irradiance estimation adaptive DC-link control FS-MPC weighting factorless |
| title | Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems |
| title_full | Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems |
| title_fullStr | Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems |
| title_full_unstemmed | Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems |
| title_short | Model-Based Maximum Power Point Tracking Algorithm With Constant Power Generation Capability and Fast DC-Link Dynamics for Two-Stage PV Systems |
| title_sort | model based maximum power point tracking algorithm with constant power generation capability and fast dc link dynamics for two stage pv systems |
| topic | PV systems model-based MPPT irradiance estimation adaptive DC-link control FS-MPC weighting factorless |
| url | https://ieeexplore.ieee.org/document/9766333/ |
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