Hybrid MPPT Control Applied to a Push-Pull based pseudo DC-link PV microinverter

Díaz, Manuel; Muñoz, Javier; Rivera, Marco; Aliaga, Rodrigo; Rohten, Jaime

doi:10.23919/epe21ecceeurope50061.2021.9570633

Cited by 3 publications

(3 citation statements)

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“…Once the MPP is reached, small perturbations continue to be made on the reference voltage to leave this point in case an local MPP is achieved and not the global MPP. However, these variations do not cause a significant decrease in the power obtained from the PV panel [17]. Figure 2 shows the algorithm used in this work.…”

Section: Mppt Algorithmmentioning

confidence: 99%

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A Comprehensive Control Strategy for a Push–Pull Microinverter Connected to the Grid

et al. 2023

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The effects of partial shading or dust accumulation on the panels of photovoltaic systems connected to the grid can generate a considerable reduction in energy performance, being necessary to provide the appropriate voltage to the grid regardless of the irradiance level. This paper addresses this problem and presents a comprehensive control strategy and its implementation for a grid-connected microinverter composed of a push–pull converter followed by an H-bridge inverter. In the push–pull converter, a hybrid MPPT algorithm and a PI control enable work in the MPP of the PV panel. In the H-bridge inverter, a cascade control consisting of a PI control and a predictive control allows the connection to the grid. A proof-of-concept prototype is implemented in order to validate the proposal. Experimental tests were performed by connecting the microinverter to a PV panel and a programmable photovoltaic panel emulator to check the MPPT performance. Furthermore, partial shading conditions were simulated on the dc source to check if the global maximum power point is reached. Experimental results demonstrate the feasibility of the topology and the control approach, obtaining MPPT performance in the topology above 99% at different power and voltage levels on the MPPT, even in the presence of partial shading conditions.

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Section: Mppt Algorithmmentioning

confidence: 99%

“…This method archives superior performance compared with conventional methods. In [17], a hybrid algorithm used in a push-pull-based pseudo DC-link PV microinverter was evaluated, reaching a simulation performance close to 99%. Another converter can be used using the same MPPT.…”

Section: Introductionmentioning

confidence: 99%

A Comprehensive Control Strategy for a Push–Pull Microinverter Connected to the Grid

et al. 2023

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“…Además, se han considerados técnicas avanzadas como algoritmos metaheurísticos y control fuzzy para asegurar un correcto funcionamiento del seguimiento del punto de máxima potencia tal como se detalla en [8]- [11]. En [12] se considera un esquema de control híbrido, que considera un control PI y control predictivo aplicado a un microinversor para extraer la máxima potencia desde el panel fotovoltaico.…”

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Technologies and MPPT algorithms for solar energy applications

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et al. 2021

2021 IEEE CHILEAN Conference on Electrical, Electronics Engineering, Information and Communication Technologies (CHILECON)

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Due to environmental policies and the advancement of solar technology, the generation of electrical energy based on photovoltaic cells has become an important contributor to the renewable energy resource mix. In recent years, the development of photovoltaic cells has increased conversion efficiencies and, along with the advancement of power electronics, this has allowed the efficient integration of these photovoltaic systems into the electricity supply grid as well as in stand-alone applications. This paper presents an overview of photovoltaic solar energy, presenting topics such as solar energy, configuration and types of photovoltaic cells, the sizing of photovoltaic panels, and maximum power point tracking algorithms.

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