Power dissipation analysis of PV module under partial shading

Yu, Byunggyu; Ko, Seok-Cheol

doi:10.11591/ijece.v11i2.pp1029-1035

Cited by 4 publications

(4 citation statements)

References 25 publications

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“…Some of these works, including the most recent, are cited in the following brief summary of the state of the art. Yu et al (2021) investigated the power dissipation of PV modules under partial shadowing using circuit analysis for seriesconnected PV modules. The specific current and voltage operating points of the shaded PV module were investigated.…”

Section: Related Workmentioning

confidence: 99%

An Experimental and Case Study on the Evaluation of the Partial Shading Impact on PV Module Performance Operating Under the Sudano-Sahelian Climate of Cameroon

et al. 2022

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Partial shading is a factor that influences the performance of a PV module. The study sought to evaluate the impact of partial shading on PV module performance in the Sudano-Sahelian climate conditions of Cameroon. The behavior of the PV module was simulated using MATLAB/Simulink for 12 months with data from the town of Yagoua. The power, current, and voltage losses of the PV module were estimated by varying the partial shading rate from 5.0% to 95.0%, with an increase factor of 5.0%. The results show that, when the shading ranges from 5.0% to 55.0%, the power and current losses are very significant and vary from 3.0% to 52.0% and 3.0%–53.0%, respectively. The voltage in this shading range remains almost invariant. For shading from 60.0% to 95.0%, the power losses increase slightly and reach approximately 60.0%. A very small current loss is observed, varying from 1.0% to 3.0%. Significant voltage losses are noted and vary from 55.0% to 59.0%. From 40.0% shading rate onwards, a mismatch is observed on the power-voltage characteristics curve by the presence of two maximum power points. This method can be used to evaluate the efficiency of different PV array topologies under partial shading. The results show the importance of paying attention to partial shading, however small its occurrence.

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Section: Related Workmentioning

confidence: 99%

An Experimental and Case Study on the Evaluation of the Partial Shading Impact on PV Module Performance Operating Under the Sudano-Sahelian Climate of Cameroon

et al. 2022

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“…Renewable energy is energy that has been derived from earth's natural resources that are not finite or exhaustible, such as wind and sunlight. Renewable energy is an alternative to the traditional energy that relies on fossil fuels, and it tends to be much less harmful to the environment [1]- [3]. Photovoltaic (PV) generation is one of the most popular power generation sources among renewable energy sources, and worldwide growth of PV is extremely dynamic [4], [5].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of a residential photovoltaic string under partial shading

Jung²

2023

IJECE

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<span lang="EN-US">As one of the most prominent renewable energy resources, Photovoltaic (PV) generation has been growing dramatically over the last years and its applications are classified into residential, commercial, and power plant class, based on its power capacity. Especially, a typical residential PV system has been configured with serially connected PV modules. For serially connected PV modules, shading is a critical factor to reduce the whole string PV output power. This paper presents study on performance analysis of a residential PV string under partial shading. This analysis contains how many maximum power points (MPPs) occur and how much power would be lost while a PV string is under partial shading with different shading positions and different shading intensities. PSIM simulation tool is used to verify the performance analysis. As a result, the number of MPPs is directly related with the number of shading intensities, regardless of the shading position. In this paper, it was verified that 8 maximum power points were generated for 8 solar intensities regardless of the location of the shadows under extreme conditions. These results can be utilized for fault diagnosis in the PV string.</span>

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“…Harvesting environmental energy for self-powering has become a necessity in ultra-low power and compact sensing systems such as wireless sensor nodes and implantable devices [1], [2]. Light [3]- [5], vibration [6], [7], thermal [8], [9], and radio frequency (RF) energy [10] are being utilized as the main energy sources for energy harvesting. The environmental energies are usually transduced into electrical energy using energy transducers such as photovoltaic (PV) cells, piezoelectric transducers (PZTs), thermoelectric generators (TEGs), and rectifying antennas.…”

Section: Introductionmentioning

confidence: 99%

An maximum power point tracking interface circuit for low-voltage DC-type energy harvesting sources

Yun

Park

2022

Bulletin EEI

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This paper presents a maximum power point tracking (MPPT) interface circuit for low-voltage DC-type energy harvesting sources such as light and thermal energy. Most energy harvesting systems used in miniature-sized sensor systems require start-up circuits because the output voltages of small-sized energy transducers are very low and not enough to directly power electronic systems. The proposed interface circuit is driven directly by the low output voltages of small size energy transducers, eliminating the need for complex start-up circuitry. A simple MPPT controller with the fractional open-circuit voltage (FOCV) method is designed and fabricated in a 65-nm complementary metal oxide semiconductor (CMOS) process. Measurement results show that the designed circuit can track the MPP voltage even in the presence of the open-circuit voltage fluctuations and can operate properly at operating voltages as low as 0.3 V. The interface circuit achieves a peak power efficiency of 97.1% and an MPPT accuracy of over 98.3%.

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Power dissipation analysis of PV module under partial shading

Cited by 4 publications

References 25 publications

An Experimental and Case Study on the Evaluation of the Partial Shading Impact on PV Module Performance Operating Under the Sudano-Sahelian Climate of Cameroon

An Experimental and Case Study on the Evaluation of the Partial Shading Impact on PV Module Performance Operating Under the Sudano-Sahelian Climate of Cameroon

Performance analysis of a residential photovoltaic string under partial shading

An maximum power point tracking interface circuit for low-voltage DC-type energy harvesting sources

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