Adaptive Switch Matrix for PV Module Connections to Avoid Permanent Cross-Tied Link in PV Array System Under Non-Uniform Irradiations

Pachauri, Rupendra Kumar; Alhelou, Hassan Haes; Bai, Jianbo; Golshan, Mohamad Esmail Hamedani

doi:10.1109/access.2021.3068637

Cited by 13 publications

(6 citation statements)

References 34 publications

(30 reference statements)

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“…Ref. [23] has presented an adaptive reconfiguration mode to lower the influence of shadows on solar panels. A switch matrix is used in model-based control to connect an adaptive solar bank to a fixed area of the photovoltaic array, boosting the array's power production.…”

Section: Configuration and Reconfiguration Techniquesmentioning

confidence: 99%

Non-Symmetrical (NS) Reconfiguration Techniques to Enhance Power Generation Capability of Solar PV System

et al. 2022

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At present, primary power generation depends on non-renewable energy resources, which will become extinct. Solar is the best option in renewable energy sources to achieve clean and green power extraction. Solar PV transforms light energy into electrical energy. However, the output power of solar PV changes with solar insolation. It is also affected by environmental factors and the shading effect. One of the key factors that can reduce the PV system output power is partial shading condition (PSC). The reduction in power output not only depends on shaded region but also depends on pattern of shading and physical position of shaded modules in the array. Due to PSCs, mismatch losses are induced between the shaded modules which can cause several peaks in the output power–voltage (P-V) characteristic. This article describes the non-symmetrical reconfiguration technique and compares it with the primary total cross tied connection. The performance of non-symmetrical reconfiguration techniques is evaluated and compared in terms of global maximum power (GMP), voltage and currents at GMP, open and short circuit voltage and currents, mismatch power loss (MPL), fill factor, efficiency, and number of local maximum power peaks (LMPPs) on a 9 × 9 PV array.

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Section: Configuration and Reconfiguration Techniquesmentioning

confidence: 99%

Non-Symmetrical (NS) Reconfiguration Techniques to Enhance Power Generation Capability of Solar PV System

et al. 2022

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“…where T r is the reference temperature of SPVC, I rr is the reverse saturation current of SPVC at temperature T r , and E Gap is the energy across the band gap of semiconductor material. Figure 3 displays the schematic diagram of the SPVC, solar photovoltaic module (SPVM), and solar photovoltaic array [29]. Solar photovoltaic cells can be connected in parallel and series to form an SPVM, whereas a solar photovoltaic array is composed of multiple SPVMs with series and parallel connections.…”

Section: The Configuration Of the Solar Photovoltaic Modulementioning

confidence: 99%

“…Figure 3 displays the schematic diagram of the SPVC, solar photovoltaic module (SPVM), and solar photovoltaic array [29]. Solar photovoltaic cells can be connected in parallel and series to form an SPVM, whereas a solar photovoltaic array is composed of multiple SPVMs with series and parallel connections.…”

Section: Solar Photovoltaic Module's Connection With Power Electronic...mentioning

confidence: 99%

A Novel SLOPDM Solar Maximum Power Point Tracking Control Strategy for the Solar Photovoltaic Power System

Liu

Farooqui

et al. 2022

Processes

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This study proposes a novel maximum power point tracking (MPPT) control strategy for the solar photovoltaic power system (SPPS). The proposed system adopts two solar photovoltaic modules of 430 W, which are connected to a boost converter and an MPPT controller, since the traditional MPPT algorithm (such as perturbation and observation [P&O] algorithm) can hardly reach maximum power point (MPP) under low irradiance level and partial shading conditions (PSC), which leads to the low efficiency of the SPPS. The speed of light optical path difference measurement (SLOPDM) MPPT control strategy has been developed in this study to overcome this problem. The estimation of the optical path angle difference is used as the basis for the proposed control strategy. This is done by determining the relationship between the optical path angle difference, solar photovoltaic power impedance Rspv and load Ro, and then calculating the duty cycle corresponding to the MPP, which then drives the boost converter to capture the MPP. The experimental results verify the proposed system, which shows the efficiency comparison between the SLOPDM MPPT algorithm, solar angle and horizon (SAH) algorithm, and P&O algorithm under PSC and uniform irradiance conditions (UIC) at irradiance levels of 700 W/m2 and 65 W/m2. It is evident from the comparison that the efficiency of the SLOPDM MPPT algorithm is 99% under both conditions, which is higher than the SAH and P&O algorithms. The SLOPDM MPPT algorithm can precisely, rapidly, and stably be operated at MPP. The contribution of this study is that the proposed MPPT control strategy can help achieve the high−performance of SPPS without changing the hardware circuit design and requiring any additional solar power meter. This reduces the cost and the complexity of the system significantly.

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“…Recent publications concentrate on the traditional techniques combined with the I(V) characteristic curve of PV systems to improve efficiency and speed due to simplicity and low cost. By using the FF value to determine the power loss between the MPP under standard conditions and when shaded, document [5] has provided a solution to continuously compare actual working parameters with standard conditions to adjust the working position. While the authors in [6][7][8] proposed a solution to approximate the current at MPP (I mp = k i I sc ) to improve MPPT efficiency, convergence rate, and output stability.…”

Section: Introductionmentioning

confidence: 99%

“…I pv = I sc − I D − I R sh (3) where I D and I Rsh are the diode-current and the shunt-resistance-current, respectively. Their values are determined according to Equations ( 4) and (5).…”

mentioning

confidence: 99%

Rapidly Determine the Maximum Power Point in the Parallel Configuration of the Photovoltaic System

Hien,

Anh,

Linh

et al. 2023

Sensors

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The maximum power point tracking (MPPT) solutions improve power generation efficiency, quickly stabilizing the output waveform of photovoltaic (PV) systems under variable operating conditions. Along with new algorithms, improved and adjusted methods to exploit energy from PV systems are increasingly being researched and proposed. However, the proposed solutions based on the traditional algorithms and their improvements have poor performance, while the advanced algorithms or hybrid methods bring high performance but need to be simplified, and the response speed is higher. Moreover, a suitable PV configuration makes choosing a simple but highly efficient algorithm, especially in low-power PV system applications such as rooftop solar power, traffic lights, and moving vehicles…where the number of PV panels is insufficient to implement flexible configurations. This paper proposes a modified version of the Perturb and Observe (MPO) algorithm to improve MPPT performance and increase convergence speed in the parallel structure of PV panels. The Short-Circuit Current (Isc) and Open-Circuit Voltage (Voc) are calculated directly at specific operating conditions to quickly determine the potential maximum power point (MPP) that will reduce power interruptions and increase power generation efficiency compared to periodic updates. Therefore, the proposed solution converges faster, with higher efficiency, and the output signal in static and dynamic MPPT situations is more stable. The results show that the highest efficiency in simulation and experiment is 99.99% and 99.93%, respectively, while the convergence speed is 0.01 s and 0.03 s, respectively. They are better than the traditional Perturb and Observe (P&O) algorithm, the Variable Step Size Perturb and Observe (VSSP&O) method, and the Particle Swarm Optimization (PSO) technique under the same operating conditions. In addition, its performance and convergence speed are also compared with the latest introduced algorithms. The results show that it is valuable and reliable for parallel PV configuration.

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Adaptive Switch Matrix for PV Module Connections to Avoid Permanent Cross-Tied Link in PV Array System Under Non-Uniform Irradiations

Cited by 13 publications

References 34 publications

Non-Symmetrical (NS) Reconfiguration Techniques to Enhance Power Generation Capability of Solar PV System

Non-Symmetrical (NS) Reconfiguration Techniques to Enhance Power Generation Capability of Solar PV System

A Novel SLOPDM Solar Maximum Power Point Tracking Control Strategy for the Solar Photovoltaic Power System

Rapidly Determine the Maximum Power Point in the Parallel Configuration of the Photovoltaic System

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