Two-step approach for quasi-optimization of energy storage and transportation at renewable energy site

Harada, Kazuho; Yabe, Kuniaki; Takami, Hirofumi; Gotō, Akira; Satô, Yasushi; Hayashi, Yasuhiro

doi:10.1016/j.renene.2023.04.030

Cited by 4 publications

(2 citation statements)

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“…For example, the storage and transportation of renewable energy are very important too [5]. For this reason, mathematical models are constructed to evaluate or optimize renewable energy systems [6,7]. In [7], the authors not only created the mathematical model but also applied the model to analyze energy storage and hydrogen production at renewable energy power plants in Japan in 2050.…”

Section: Introductionmentioning

confidence: 99%

Improvement of solar concentrator structure

Baydyk,

Mammadova,

Velasco

et al. 2024

EEJET

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Green energy includes solar, wind, geothermal and other types of energy sources generation. The object of this research is solar concentrators. The problem to be solved is related to the development of the structure frame, especially for solar concentrators with flat triangular or square mirrors that approximate a parabolic shape surface. The essence of the investigation is developing and producing several prototypes of solar concentrators that have a low cost of materials but the devices were assembled by hand and therefore the manufacturing cost is sufficiently high. Therefore, it is important to reduce the cost through automation of the solar concentrator production process. To obtain better conditions for future automation, we need to reduce the number of metal structural elements of the solar concentrator. In this case, the automation problem is simpler for its realization. The results obtained are related to the improved solar concentrator structure that can be technologically simpler than the previous one and lighter in weight. The development of improved solar concentrator design and structure can help reduce the cost of assembly and accelerate the solar concentrator assembly process. In the case of mass production, they can be used in practice. The proposed solar concentrators can be used for different applications, for example, green buildings in rural areas, or chemical reactors to accelerate the chemical process of organic waste processing. Another application is to use solar concentrators in combination with agricultural fields. These solar concentrators can be used with small-scale thermal energy storage (TES). Using TES, it is possible to make power plants for green buildings. Small solar power plants can support all the energy demands of residential houses

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Section: Introductionmentioning

confidence: 99%

Improvement of solar concentrator structure

Baydyk,

Mammadova,

Velasco

et al. 2024

EEJET

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“…With the increasing severity of the energy crisis and the increasing requirements for environmental protection, the demand for sustainable and efficient energy conversion and storage technologies is becoming more and more urgent [ 1 , 2 , 3 ]. In recent years, the innovation of new energy and the utilization of environmental energy have been research hotspots, which are necessary for energy storage and optimization of related renewable energy [ 4 , 5 ]. As a promising energy harvesting technology, triboelectric nanogenerator (TENG) has attracted considerable attention due to its sustainability and low cost [ 6 , 7 ], as it has been proven capable of harvesting energy from various sources, including human motion, wind, vibration and water currents, which makes it highly versatile in practical applications [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Improving the Output Efficiency of Triboelectric Nanogenerator by a Power Regulation Circuit

Leng

et al. 2023

Sensors

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Triboelectric nanogenerator (TENG) is a promising technology for harvesting energy from various sources, such as human motion, wind and vibration. At the same time, a matching backend management circuit is essential to improve the energy utilization efficiency of TENG. Therefore, this work proposes a power regulation circuit (PRC) suitable for TENG, which is composed of a valley-filling circuit and a switching step-down circuit. The experimental results indicate that after incorporating a PRC, the conduction time of each cycle of the rectifier circuit doubles, increasing the number of current pulses in the TENG output and resulting in an output charge that is 1.6 fold that of the original circuit. Compared with the initial output signal, the charging rate of the output capacitor increased significantly by 75% with a PRC at a rotational speed of 120 rpm, significantly improving the utilization efficiency of the TENG’s output energy. At the same time, when the TENG powers LEDs, the flickering frequency of LEDs is reduced after adding a PRC, and the light emission is more stable, which further verifies the test results. The PRC proposed in this study can enable the energy harvested by the TENG to be utilized more efficiently, which has a certain promoting effect on the development and application of TENG technology.

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