Comparative study with practical validation of photovoltaic monocrystalline module for single and double diode models
Salam J Yaqoob1, Ameer L Saleh2, Saad Motahhir3
1Authority of the Popular Crowd, Baghdad, Iraq. engsalamjabr@gmail.com.
Scientific Reports
|September 28, 2021
Summary
This study introduces a novel Matlab/Simulink method for modeling photovoltaic (PV) modules, enhancing accuracy in electrical behavior simulation. The new approach accurately predicts PV module performance under varying conditions.
Area of Science:
- Renewable Energy Engineering
- Electrical Engineering
- Computational Modeling
Background:
- Photovoltaic (PV) modules convert solar energy to electricity, requiring accurate mathematical models for performance analysis.
- Existing single-diode and double-diode models are widely used but can be improved for simulation accuracy.
- Matlab/Simulink is a powerful tool for dynamic system modeling and analysis.
Purpose of the Study:
- To present a new modeling method for photovoltaic modules using Multiplexer and Functions blocks in Matlab/Simulink.
- To mathematically analyze and simulate single-diode and double-diode PV models with modifications.
- To validate the proposed modeling method using experimental data from a monocrystalline PV module.
Main Methods:
- Developed a new PV module modeling approach in Matlab/Simulink utilizing Multiplexer and Functions blocks.
- Performed mathematical analysis of single and double diode equivalent circuits.
- Extracted PV panel internal parameters using the Simulink PV array tool.
- Compared simulation results of the double-diode model with the single-diode model under varying irradiance and temperature.
- Validated the proposed method with experimental data from a NST-120W monocrystalline PV module.
Main Results:
- The proposed Matlab/Simulink method accurately represents PV module electrical behavior.
- The double-diode model, simulated with the new method, showed good agreement with experimental I-V and P-V characteristics.
- The method effectively captures PV module performance under different environmental conditions (irradiance and temperature).
Conclusions:
- The novel Matlab/Simulink modeling approach provides accurate simulation of photovoltaic module performance.
- The method enhances the analysis of PV module electrical behavior, particularly the double-diode model.
- This work contributes a validated, efficient tool for PV system modeling and research.
More Related Videos
Related Concept Videos
01:14Modeling of Diode Reverse Characteristics
430
In electronic circuits, reverse-biased diode configurations are critical for regulating voltage levels. Zener diodes exploit the reverse breakdown phenomenon and exhibit a controlled breakdown at a specific Zener voltage (VZ). They are designed to maintain a constant voltage across their terminals and are commonly used for voltage regulation in circuits.
When a reverse voltage applied to a Zener diode exceeds its breakdown voltage, the diode enters the breakdown region. At this point, the...
When a reverse voltage applied to a Zener diode exceeds its breakdown voltage, the diode enters the breakdown region. At this point, the...
430
01:19Modeling of Diode Forward Characteristics
772
Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...
772
01:18Small-signal Diode Model
1.1K
In analyzing the behavior of diodes in circuits, the relationship between the current through a diode and the voltage across it is of particular interest, especially when considering the effect of a direct current (DC) bias voltage. When applied, this DC bias influences the diode's operating point, known as the Q point, around which the current-voltage (I-V) characteristic of the diode exhibits exponential behavior. Introducing a small, time-varying signal on top of this bias aids in...
1.1K
01:11P-N junction
758
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
758
01:15The Ideal Diode
1.6K
A diode is a semiconductor device that allows current to flow in one direction only, making it a crucial component in electronic circuits for controlling the direction of current flow. An ideal diode is a simplified version of a real diode used to understand how diodes work in circuits. It possesses two terminals: the positive anode and the cathode, which is negative. When a positive voltage is applied to the anode relative to the cathode, the diode is in a forward-biased state, allowing...
1.6K
01:14Diode: Reverse bias
1.1K
A diode is reverse-biased when the positive terminal of an external voltage source is connected to the n-type material and the negative terminal to the p-type material. This configuration opposes the natural direction of current flow through the diode, effectively increasing the width of the depletion region and the barrier potential. The reverse bias condition produces a minimal leakage current, primarily due to minority charge carriers. This leakage becomes significant when the reverse...
1.1K