A Comprehensive, Quantitative Comparison of Inverter Architectures for Various PV Systems, PV Cells, and Irradiance Profiles

Strache, Sebastian; Wunderlich, Ralf; Heinen, Stefan

doi:10.1109/tste.2014.2304740

Cited by 66 publications

(26 citation statements)

References 25 publications

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“…Therefore, the subMICs-based system shows higher energy yield in comparison with the centralized inverter, DCPO, and microinverter configurations. In [16], a quantitative comparison of PV energy harvesting architectures of string, power optimizer, microinverter, and subMICs is presented. The 30-year prediction of solar energy harvest showed that the subMIC-based system produces more energy than other system approaches with the consideration of various types of installations including ground-mounted power plant, rooftop installation, facade PV, and electric vehicles.…”

Section: Submodule-integrated Convertersmentioning

confidence: 99%

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An Efficient Modeling Technique to Simulate and Control Submodule-Integrated PV System for Single-Phase Grid Connection

Khan¹,

Xiao²

2016

IEEE Trans. Sustain. Energy

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The photovoltaic (PV) system that is based on submodule-integrated converters (subMICs) is capable of maximizing solar energy harvest by eradicating power losses due to intrapanel mismatch. Modeling and simulation of subMIC-based systems are important to study the effect of PV partial shading, prove new control strategies, analyze distributed system dynamics, optimize system configurations, and determine system parameters, etc. However, the simulation of such systems can be very challenging due to the large number of switching-mode power units, nonlinear nature of PV generators, and complication of the coordinating control. This paper provides an effective solution to simulate and control single-phase grid-tied PV systems that are based on a practical subMICs configuration. The approach includes the simplified PV cell model and averaged model for power converters, which consider all dynamic interactions among the maximum power point tracking (MPPT), PV submodule voltage regulation, dc-link voltage control, and double frequency ripple. The effectiveness of the proposed simulation and the sub-MIC system is validated by the comparison with a practical system based on centralized PV inverter under the real-world solar irradiance and various PV mismatch conditions, e.g., partial shading and uneven temperature distribution etc.Index Terms-DC/DC power conversion, energy harvesting, photovoltaic power systems, simulation. 1949-3029

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Section: Submodule-integrated Convertersmentioning

confidence: 99%

“…The DCPO and subMICs were also simulated for comparison with other PV architectures in [16]. In the aforementioned study, simulations are performed for only small number of modules-six power optimizers for DCPO and six submodules for subMIC-based system.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Modeling Technique to Simulate and Control Submodule-Integrated PV System for Single-Phase Grid Connection

Khan¹,

Xiao²

2016

IEEE Trans. Sustain. Energy

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“…The experimental results of the developed 1 kW two-string prototype with different PV strings at various PV conditions are shown in Reference [29]. The industrial PV-string inverter SMA Sunny Boy 1600TL with a maximum input power of 1700 W was investigated in Reference [30].…”

Section: Introductionmentioning

confidence: 99%

Experimental Comparison of Two-Level Full-SiC and Three-Level Si–SiC Quasi-Z-Source Inverters for PV Applications

et al. 2019

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The paper presents a comparative study of two solar string inverters based on the Quasi-Z-Source (QZS) network. The first solution comprises a full-SiC two-level QZS inverter, while the second design was built based on a three-level neutral-point-clamped QZS inverter with Silicon based Metal–Oxide–Semiconductor Field-Effect Transistors (Si MOSFETs). Several criteria were taken into consideration: the size of passive elements, thermal design and size of heatsinks, voltage stress across semiconductors, and efficiency investigation. The Photovoltaic (PV)-string rated at 1.8 kW power was selected as a case study system. The advantages and drawbacks of both solutions are presented along with conclusions.

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“…However, solar power has a few limitations, including large fluctuations of the output power depending on weather conditions and angle of sunlight incidence as well as low power generation efficiency [8,9]. Many studies have attempted to improve the efficiency of solar power generation by: improving solar cell efficiency [10], a maximum power point tracking (MPPT) operation method [11,12], a cooling system for solar panels [13], and, optimization of photovoltaic inverters [14][15][16]. However, the impacts of these methods on efficiency have remained limited due to the seasonal-, time-or weather-varying intensity levels of sunlight incidence on the solar panels.…”

Section: Introductionmentioning

confidence: 99%

New Curved Reflectors for Significantly Enhanced Solar Power Generation in Four Seasons

Choi

Kim

et al. 2019

Energies

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A new curved-type reflector for solar power generation is proposed. By adopting the curved-type reflector between consecutive solar panel arrays, all incoming sunlight can be utilized and thus, the generated power is significantly increased. Furthermore, the proposed curved-type reflector can be generally used in four seasons regardless of the altitude or angle of the installation environment. The optimum design rule for the curved-reflector, comparing to a plane-type reflector, is completely developed in this paper. A new solar cell configuration best fit for the proposed curved-reflector is also provided. Experimental results showed that the curved-type reflector improves the spatial average solar power by 61% compared to no reflector case, which is even 11% higher than the plane-type reflector. Reflectors, especially curved-type reflectors, are found to be one of promising solutions for highly efficient solar power generation.

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A Comprehensive, Quantitative Comparison of Inverter Architectures for Various PV Systems, PV Cells, and Irradiance Profiles

Cited by 66 publications

References 25 publications

An Efficient Modeling Technique to Simulate and Control Submodule-Integrated PV System for Single-Phase Grid Connection

An Efficient Modeling Technique to Simulate and Control Submodule-Integrated PV System for Single-Phase Grid Connection

Experimental Comparison of Two-Level Full-SiC and Three-Level Si–SiC Quasi-Z-Source Inverters for PV Applications

New Curved Reflectors for Significantly Enhanced Solar Power Generation in Four Seasons

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