A Novel Method for Implementing MPPT Based Photovoltaic Closed Loop Flyback Inverter with STM32F407VG Controller using Waijung Tool

A Novel Method for Implementing MPPT Based Photovoltaic Closed Loop Flyback Inverter with STM32F407VG Controller using Waijung Tool
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© 2022 by IJETT Journal
Volume-70 Issue-8
Year of Publication : 2022
Authors : Mangala R. Dhotre, Prashant V. Thakre, Vijay M. Deshmukh
DOI : 10.14445/22315381/IJETT-V70I8P220

How to Cite?

Mangala R. Dhotre, Prashant V. Thakre, Vijay M. Deshmukh, "A Novel Method for Implementing MPPT Based Photovoltaic Closed Loop Flyback Inverter with STM32F407VG Controller using Waijung Tool," International Journal of Engineering Trends and Technology, vol. 70, no. 8, pp. 194-205, 2022. Crossref, https://doi.org/10.14445/22315381/IJETT-V70I8P220

Abstract
Nowadays, renewable energy sources are continuously increasing to reduce global warming. Since solar energy is abundantly available in India, the proposed model uses a photovoltaic (PV) system to generate dc input voltage applied to a system. Flyback inverters are gaining more popularity due to their simplicity, low cost, and high efficiency. To increase the use of flyback inverters, this research presents a novel method for implementing a photovoltaic-based closed-loop flyback inverter using an STM32F407VG digital controller in the wiajung platform. The system consists of a photovoltaic system, a flyback inverter, a proportional and integral (PI) feedback controller, and an STM32F407VG digital controller. A detailed control system is presented where the gate signal generated from the maximum power point tracking system controls the duty cycle of switching pulses applied to the MOSFET of the DC-DC converter and also ensures maximum utilization of the solar photovoltaic source. The PI controller produces the switching pulses for the flyback inverter by adjusting the inverter switches' duty cycle according to the inverter's output signal. The flyback inverter produces pure sinusoidal output voltage and current signals by adjusting the duty cycle according to the control signals generated through the STM32F407VG digital controller. The STM controller assures the sinusoidal output of the inverter even at lower solar radiation. The proposed model is developed in MATLAB/Simulink. A 300W digitally controlled flyback inverter prototype has been implemented using an STM32F407VG digital controller using the waijung blockset to verify the feasibility of the proposed scheme.

Keywords
Flyback inverter, Maximum power point tracking (MPPT), Perturb and observe method(P&O), Photovoltaic (PV) system, Pulse width modulation (PWM).

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