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MPPT by Fixed Voltage Method in Solar PV System in MATLAB

MPPT by Fixed Voltage Method in Solar PV System in MATLAB


In this blog post, we'll delve into the fascinating world of solar energy and explore the utilization of a Fixed Voltage Maximum Power Point Tracking (MPPT) algorithm to enhance the efficiency of a solar photovoltaic (PV) system. The discussion is based on a YouTube transcript that explains the method and its application to extract maximum power from PV panels under varying irradiation conditions.

Understanding MPPT and its Importance:

MPPT is a crucial aspect of solar power systems, ensuring that the PV panels operate at their maximum power point (MPP) for optimal energy output. The video emphasizes the significance of adapting to changing irradiation conditions, specifically addressing the impact of temperature variations on the power point.

Algorithm Choice – Fixed Voltage Method:

The narrator advocates for the use of the Fixed Voltage MPPT algorithm to regulate the PV panel's voltage for maximum power extraction. The chosen voltage range is between 282 and 293 volts, with a set value of 286 volts or an average of 286 volts, depending on the desired precision.

PV Panel Details: The PV panel discussed in the video has a single panel rating of 213.15 watts, a maximum power point voltage of 29 volts, and a maximum current of 7.35 amps. It is configured with ten panels in series and 40 parallel distances, resulting in a maximum power generation of approximately 85.26 kilowatts under standard test conditions.

Converter Design:

To implement the Fixed Voltage MPPT algorithm, a boost converter is designed with specified inputs such as PV power, input voltage, switching frequency, and output voltage. The video provides a tool to calculate inductor current and capacitor voltage values for the boost converter.

Controller and Simulation:

The narrator discusses the design of a controller that compares the PV voltage with the reference voltage (286 volts) using a proportional-integral (PI) controller. This information is then processed through a pulse generator to control the IGBT in the boost converter, effectively boosting the voltage from 286 volts to around 600 volts. A simulation is conducted to demonstrate the system's operation under changing irradiation conditions.

Simulation Results:

The simulation results showcase the effectiveness of the Fixed Voltage MPPT algorithm. As irradiation conditions shift from 1000 to 500 watts per meter square, the system successfully maintains an optimal power output, yielding 8.85 kilowatts and 4.3 kilowatts, respectively.


The blog post concludes by summarizing the working principle of the Fixed Voltage MPPT algorithm in a solar PV system. The algorithm ensures the continuous extraction of maximum power from PV panels, making it a valuable tool for optimizing energy efficiency. The content is presented as a conversion from a YouTube transcript, providing valuable insights into the application of MPPT algorithms in the renewable energy sector.

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