Design and testing of two phase array reconfiguration procedure for maximizing power in solar PV systems under partial shade conditions (PSC)

Solar-powered aircraft can perform long-term flights with clean solar energy. However, the energy derived from solar irradiation is influenced by the time of year and latitude, which limits the energy acquisition ability of solar aircraft with a straight-wing configuration. Hence, unconventional configurations based on increasing wing dihedral to track the sun are proposed to improve energy acquisition at high-latitude regions in winter, which may involve power loss caused by mismatch in the photovoltaic system. However, mismatch loss is seldom considered and may cause energy to be overestimated. In this paper, the energy acquisition characteristics of a joint-wing configuration are presented based on the simulation of an energy system to investigate the mismatch power loss. The results indicate a 4~15% deviation from the frequently used estimation method and show that the mismatch loss is influenced by the curved upper surface, the severity of shading and the circuit configuration. Then, the configuration energy acquisition factor is proposed to represent the energy acquisition ability of the joint-wing configuration. Finally, the matching between the aircraft configuration and flight trajectory is analyzed, demonstrating that the solar-powered aircraft with an unconventional wing configuration is more sensitive to the coupling between configuration and trajectory.

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“…The output current I can be expressed using the equivalent circuit in terms of the output voltage V [30]:…”

Section: Pv Array Modelmentioning

confidence: 99%

Energy Acquisition of Solar-Powered Joint-Wing Aircraft Considering Mismatch Power Loss

Sun

Guo

et al. 2021

Energies

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“…Under steady weather conditions, when the series of connected modules are experiencing equal irradiation levels, the P-V curve presents only single power peak. While multiple peaks exist under uneven levels of irradiation, which can occur due to building and tree shadows; items moving in the sky, such as a bird falling and a plane in motion [29]; and anything that can hurdle the received irradiation and cause shading conditions. Consequently, the shaded PV panels suffer from hotspots, which cause considerable power dissipation [30].…”

Section: Partial Shading Effect On Solar Pvmentioning

confidence: 99%

A Novel Hybrid Approach for Maximizing the Extracted Photovoltaic Power under Complex Partial Shading Conditions

et al. 2020

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The convenient design of a maximum power point tracking (MPPT) controller is key to the success of photovoltaic (PV) system performance in order to maximize the extracted power, which is affected significantly by weather fluctuations, particularly partial shading condition (PSC). This paper proposes a novel hybrid MPPT approach based on a modified Perturb and Observe (P&O) assisted by the Extremum Seeking Control (ESC) strategy, combining the benefits of these simple algorithms and, meanwhile, eliminating their drawbacks. The proposed algorithm is able to track the maximum possible power under any level of weather fluctuation, with comprehensive enhancement on all aspects of high performance, boosting the PV array efficiency to 100%, reducing the convergence time to less than 100 ms, completely eradicating the oscillations around the achieved power, and maintaining the simplicity levels of both involved strategies. More importantly, this algorithm is applicable for any PV array configuration, which enhances the robustness and novelty of the algorithm. The performance is verified using MATLAB/Simulink. A boost converter is used for controlling DC to DC (direct current to direct current) power. The proposed algorithm’s performance is compared with the conventional P&O and incremental conductance (IC) algorithms under four different cases of weather conditions. The shortcomings of these algorithms are illustrated and the analysis confirms the effectiveness of the proposed algorithm accordingly.

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“…15 Instead, with no additional cost and burden, the Physical Array Reconfiguration (PAR) techniques are highly economical compared to EAR techniques. 16 When surveyed, including the recently developed Su Do Ku reconfigured BL-TCT 17 variety of puzzle solving techniques like: Su Do Ku (SUD), 18 Arrow Su Do Ku 19 sky scrapper, 20 Improved Su Do Ku, 21 chaotic baker method, 22 twophase, 23 Competance square, 24 Dominance square, 12 Optimal Su Do Ku (OP. SUD.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the power output of partially shaded PV array using column shift right‐left panel arrangement based array reconfiguration technique

Venkateswari

Rajasekar

2021

Int Trans Electr Energ Syst

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Array reconfiguration techniques applied for partially shaded photovoltaic array yield maximum power output via row current minimization and shade dispersion. Both static and dynamic reconfiguration techniques are utilized for power maximization. Noticeable advantages like one time rearrangement, effective shade dispersion, and easy steps made physical or static more popular. With profound necessity to simplify the mathematical procedure and reduced complexity, in this work, a highly competent Column shift Right-Left panel arrangement based array reconfiguration technique is proposed. It follows simple relocation steps to disperse even complex shade occurrences. To justify the versatility of the method, three different shade cases together with economy analysis and qualitative comparative study with five different existing methods including Total Cross Tied, Su Do Ku, Column method, Dominance Square, Improved Su Do Ku and Sky Scrapper methods are analysed. As a result of its implementation, power generation has aroused to a maximum of 13.47%, 4.35%, 14.01%, 9.97%, 3.45%, and 2.43%, for Top Left Corner shade case compared to conventional techniques. Further, economy analysis indicates that a maximum revenue is generated with proposed work. To strengthen the performance analysis, an experimental study on 3 Â 3 PV array based on six performance metrics is carried out. For all the test cases conducted, an effective shade dispersion with the proposed method is achieved with the highest power output.

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Design and testing of two phase array reconfiguration procedure for maximizing power in solar PV systems under partial shade conditions (PSC)

Cited by 71 publications

References 30 publications

Energy Acquisition of Solar-Powered Joint-Wing Aircraft Considering Mismatch Power Loss

Energy Acquisition of Solar-Powered Joint-Wing Aircraft Considering Mismatch Power Loss

A Novel Hybrid Approach for Maximizing the Extracted Photovoltaic Power under Complex Partial Shading Conditions

Enhancing the power output of partially shaded PV array using column shift right‐left panel arrangement based array reconfiguration technique

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