Single‐stage microinverter with current sensorless control for BIPV system

Mathew, Derick; Naidu, Rani Chinnappa; Wang, Yue; Busawon, Krishna

doi:10.1049/rpg2.12177

Cited by 7 publications

(5 citation statements)

References 28 publications

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“…In addition, it is possible to infer from the scientific literature different works related to current-sensorless photovoltaic systems addressing only one-phase on-grid systems, as our proposal. For instance, the work in [18] presents a transformerless single-stage buck-boost microinverter with sensorless control for BIPV system. The current estimation strategy is used to control the PV system, reducing both costs and volume of the system.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In this scenario, none of the multilevel strategies discussed in the above section meets the characteristics of using a single DC input without the use of transformers. Despite there are several microinverter structures with sensorless strategies [18][19][20][21][22][23], none of them contemplates a multilevel conversion scheme. Thus, the main motivation of this investigation consists in proposing a topology that meets a reduction in hardware and software characteristics for efficient DC/AC conversion in a single-phase PV system, where sensor reduction, simple interconnection strategy, and a reduced number of switches for multilevel conversion.…”

Section: Motivationmentioning

confidence: 99%

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A single‐loop and current‐sensorless control for on‐grid seven‐level photovoltaic microinverter

Rodríguez

Mejía-Ruiz

Paternina

et al. 2022

IET Power Electronics

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This paper proposes a single‐phase transformerless photovoltaic (PV) microinverter for low and medium‐voltage applications. The proposed approach comprises a suitable combination of multilevel boost/buck and H‐bridge topologies with a current‐sensorless control scheme, where the system controller only needs a straightforward‐to‐implement control loop to reach the desired attributes in solar PV conversion systems. Compared with other microinverters, this proposal significantly reduces the number of hardware components and required software resources, considerably attaining industrial and production advantages; guaranteeing: (i) a high DC elevation factor; (ii) an extraction of maximum power from solar PV panels; (iii) a multilevel output voltage; (iv) a low total harmonic distortion; and (v) a power factor close to unity. The multilevel microinverter's feasibility and effectiveness are assessed by a comprehensive mathematical model, whose simulation results are evaluated using MATLAB‐Simulink, and the experimental results are validated by means of an on‐grid low‐scale prototype, generating a power capacity of 1.5 kW.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Motivationmentioning

confidence: 99%

A single‐loop and current‐sensorless control for on‐grid seven‐level photovoltaic microinverter

Rodríguez

Mejía-Ruiz

Paternina

et al. 2022

IET Power Electronics

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“…In this case, this article proposes the Buck-Boost Single-stage Microinverter (BBSM) topology to convert DC power to AC, which satisfies all of the aforementioned requirements. The PV system under consideration uses an appropriate switching approach that allows the inverter to run in Discontinuous Conducting Mode (DCM) and track maximum power using the Perturbation and Observation (P&O) technique [15]. For the first time, this paper describes a number of unique and scientific additions to the BIPV system:…”

Section: Microinvertermentioning

confidence: 99%

“…Using Equation ( 13), the average value of current in inductor I avg throughout a swapping period expressed in Equation (14). As noted in (15), the current at output A is a sinusoidal changing current and that can be expressed as I g , as illustrated in the expression (14). As a result, the energy required on the output side E out can be written as (16).…”

mentioning

confidence: 99%

Buck-Boost Single-Stage Microinverter for Building Integrated Photovoltaic Systems

et al. 2021

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Microinverters for Building Integrated Photovoltaic (BIPV) systems must have had a small number of components, be efficient, and be reliable. In this context, a single-phase Buck-Boost Single-stage Microinverter (BBSM) for grid-connected BIPV systems is presented. The concept of topology is extracted from the buck-boost converter. The leakage current in the system is kept under control. It uses an optimal number of active and passive components to function at a high-efficiency level. The suggested topology provides a high level of reliability due to the absence of shoot-through problems. To validate the findings, a simulation in combination with an experimental system for a 70 W system is developed with the design approach. The efficiency of the microinverter, total harmonic distortion of the grid current are measured as 96.4% and 4.09% respectively. Finally, a comparison study has indicated the advantages and disadvantages of the suggested inverter.

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“…Among renewable energy sources, solar energy was one of the most heavily invested sources in recent years [3]. Therefore, there is a growing interest in building integrated photovoltaic thermal (BIPV/T) systems in industrial and residential buildings [4].…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of BIPV/T application in winter season under Şanlıurfa's meteorological conditions

Demir,

Aktacir

2024

IET Renewable Power Gen

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Considering that nearly 39% of the total CO2 emission released into the atmosphere today are thought to be due to the energy consumed by buildings, the importance of taking measures through buildings to combat global warming is evident. Therefore, the concept of nearly zero‐energy buildings (NZEB) is come to the forefront. Building integrated photovoltaic thermal (BIPV/T) systems are used to enable buildings to generate their own energy. However, buildings have limited facade and roof areas required for BIPV/T systems. Therefore, in this study, various configurations of bifacial (double‐sided) and monofacial (single‐sided) panels were compared to investigate ways to enhance the efficiency of BIPV/T systems. Different air flow velocities and varying air gap distances were tested for both panel types. By placing a reflective surface on the wall behind the bifacial panel, the electrical efficiency of the bifacial panel was increased and proven through PVsyst analysis. Both panels provided maximum heat efficiency at the shortest air gap distance under high air flow conditions. In addition, it was shown in both the experimental setup and Comsol CFD analysis that it provides significant benefit in the thermal energy load of the building when heating the interior environment in winter. In terms of electrical power production surplus, the bifacial panel outperformed the monofacial panel in all configurations, with a minimum advantage of 8.33% and a maximum of 12.73%. Additionally, the maximum electrical efficiency was obtained from the bifacial panel in configurations with the longest air gap distance. Using the bifacial panel in the BIPV/T system with the shortest air gap distance during the heating season and the longest air gap distance during other seasons can provide the highest efficiency for the building throughout the year.

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Single‐stage microinverter with current sensorless control for BIPV system

Cited by 7 publications

References 28 publications

A single‐loop and current‐sensorless control for on‐grid seven‐level photovoltaic microinverter

A single‐loop and current‐sensorless control for on‐grid seven‐level photovoltaic microinverter

Buck-Boost Single-Stage Microinverter for Building Integrated Photovoltaic Systems

Experimental investigation of BIPV/T application in winter season under Şanlıurfa's meteorological conditions

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