Advanced approach for the optimization of a grid-tied photovoltaic system
This meeting is about is one of the core research activities of the exploitation of photovoltaic (PV) energy. The use of PV energy has drawn global attention for future electricity production to meet the increased energy demand. Amongst the application fields of this energy type, the grid-tied PV system is considered as the most requested on the PV market because it allows a better use of PV energy and does not need energy storage devices, which reduces cost with less maintenance. The grid-tied PV systems are broadly classified into two categories, single and two conversion stages. The efficiency resulting from these systems depends not only on the working conditions, but also on the complete conversion chain. This can be achieved by a judicious choice of configurations or topologies, good sizing of components and effective control techniques. The research work presented in this thesis is to contribute to the efficiency optimization of grid-tied PV systems. This contribution concerns the modeling, sizing and control of a two-stage grid connected PV system. Nevertheless, the main part of our research is to propose powerful control scheme capable to attain the aforementioned objective. Firstly, the development of a Maximum power point tracking (MPPT) methods based on a non-linear approach called sliding mode control (SMC) to achieve an optimal exploitation of PV generator under solar irradiation changes. Also, the development of new design based on SMC theory for DC-Link voltage controller to maintain the DC-link voltage constant at the desired value during any case of solar irradiation changes. Afterwards, the development of a voltage oriented control (VOC) based on SMC and space vector modulation for proper inverter operation as well sinusoidal currents injection into the mains grid with low total harmonic distortion (THD < 5%).In addition, these schemes have been performed through numerical simulation with MATLAB/Simulink® environment, and validated practically through real-time hardware in the loop system using a dSPACE DS 1104 system.
Date and Time
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- Date: 19 Sep 2019
- Time: 10:00 AM to 01:00 PM
- All times are (UTC+01:00) West Central Africa
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- University of Sétif1
- Route de Bejaia
- Sétif, Setif
- Algeria 19000
- Building: Auditorium Kermi
Speakers
Kihal Abbas
Advanced approach for the optimization of a grid-tied photovoltaic system
This presentation is about one of the core research activities of the exploitation of photovoltaic (PV) energy. The use of PV energy has drawn global attention for future electricity production to meet the increased energy demand. Amongst the application fields of this energy type, the grid-tied PV system is considered as the most requested on the PV market because it allows a better use of PV energy and does not need energy storage devices, which reduces cost with less maintenance. The grid-tied PV systems are broadly classified into two categories, single and two conversion stages. The efficiency resulting from these systems depends not only on the working conditions, but also on the complete conversion chain. This can be achieved by a judicious choice of configurations or topologies, good sizing of components and effective control techniques. The research work presented in this thesis is to contribute to the efficiency optimization of grid-tied PV systems. This contribution concerns the modeling, sizing and control of a two-stage grid connected PV system. Nevertheless, the main part of our research is to propose powerful control scheme capable to attain the aforementioned objective. Firstly, the development of a Maximum power point tracking (MPPT) methods based on a non-linear approach called sliding mode control (SMC) to achieve an optimal exploitation of PV generator under solar irradiation changes. Also, the development of new design based on SMC theory for DC-Link voltage controller to maintain the DC-link voltage constant at the desired value during any case of solar irradiation changes. Afterwards, the development of a voltage oriented control (VOC) based on SMC and space vector modulation for proper inverter operation as well sinusoidal currents injection into the mains grid with low total harmonic distortion (THD < 5%).In addition, these schemes have been performed through numerical simulation with MATLAB/Simulink® environment, and validated practically through real-time hardware in the loop system using a dSPACE DS 1104 system.
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Address:University of Sétif1, Laboratory LEPCI, Sétif, Algeria, 19000