Optimal Power and Energy Modeling and Range Evaluation of a Solar Assist Plug-in Hybrid Electric Tractor (SAPHT)

Mousazadeh, H.; Keyhani, A.; Javadi, Alireza; Mobli, Hossein; Abrinia, Karen; Sharifi, Alimorad

doi:10.13031/2013.32586

Cited by 17 publications

(27 citation statements)

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“…Note that the actuation/tilting and the resultant artificial heliotropism are directly driven by the sunlight. Different from the current man‐made solar tracking systems which are generally realized through mechatronic designs,2, 3 our approach possesses the elegance and simplicity in natural heliotropism, and avoids the use of complicated electro‐mechanical actuator and feedback systems, and their inherent high cost and power consumption, which unfortunately significantly negates the gain offered by power generation. Compared to other passive solar tracking systems,3 such as those based on thermal expansion of gases or metals, our approach realizes full‐range tracking with a much less complicated system.…”

Section: Introductionmentioning

confidence: 99%

“…Different from the current man‐made solar tracking systems which are generally realized through mechatronic designs,2, 3 our approach possesses the elegance and simplicity in natural heliotropism, and avoids the use of complicated electro‐mechanical actuator and feedback systems, and their inherent high cost and power consumption, which unfortunately significantly negates the gain offered by power generation. Compared to other passive solar tracking systems,3 such as those based on thermal expansion of gases or metals, our approach realizes full‐range tracking with a much less complicated system. Our approach is also self‐contained, thus being able to be combined with other methods to increase the solar cell output, including enhancing the conversion efficiency4–12 and implementing concentrators 13–16…”

Section: Introductionmentioning

confidence: 99%

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Direct Sun‐Driven Artificial Heliotropism for Solar Energy Harvesting Based on a Photo‐Thermomechanical Liquid‐Crystal Elastomer Nanocomposite

Liu

Huang

et al. 2012

Adv Funct Materials

178

140

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Inspired by heliotropism in nature, artificial heliotropic devices that can follow the sun for increased light interception are realized. The mechanism of the artificial heliotropism is realized via direct actuation by the sunlight, eliminating the need for additional mechatronic components and resultant energy consumption. For this purpose, a novel reversible photo‐thermomechanical liquid crystalline elastomer (LCE) nanocomposite is developed that can be directly driven by natural sunlight and possesses strong actuation capability. Using the LCE nanocomposite actuators, the artificial heliotropic devices show full‐range heliotropism in both laboratory and in‐field tests. As a result, significant increase in the photocurrent output from the solar cells in the artificial heliotropic devices is observed.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Direct Sun‐Driven Artificial Heliotropism for Solar Energy Harvesting Based on a Photo‐Thermomechanical Liquid‐Crystal Elastomer Nanocomposite

Liu

Huang

et al. 2012

Adv Funct Materials

178

140

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“…Since the power consumption capacity of the Microner sprayer is almost 3W, this system could supply the required energy for 7 to 9 working hours in a day which is equal to spraying 10 to 15ha/day each day. In comparison to solar hybrid tractor [26] that only 18% of the required energy provided by the PV panels this sprayer can provide needed energy for spraying completely from sun.…”

Section: <Figure 3>mentioning

confidence: 99%

A novel application of stand-alone photovoltaic system in agriculture: solar-powered Microner sprayer

Rad

Omid

Alimardani

et al. 2015

International Journal of Ambient Energy

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In this paper, a stand-alone photovoltaic (SAPV) power supply system for Microner sprayer is identified and proposed. The designed system was comprised of three main parts: sprayer, solar power supply and control system. Initially, the control board and data acquisition system were designed and simulated by Proteus software and then implemented using an AVR microcontroller and tested via LabVIEW in the laboratory. next a prototype system was fabricated for evaluation purposes. A PV panel size of 88.5cm 2 , positioned horizontally above operator's head that generates 26.4 Wh/day was used as solar energy source. A small 2Ah (12V) battery is installed in the system as a stabilizer. This sprayer can work seven to nine hours daily. It is calculated that the average loss of collected energy due to non-application of maximum power point tracker (MPPT) was approximately 25%.

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“…The tracking mechanisms are actuated by motor sources (linear or rotative) controlled on the basis of various control strategies. Some of these strategies involve the use of photo-sensors to track the Sun or mathematical algorithms to determine the Sun position on the sky dome relative to Earth rotations (daily -around its own axis, seasonal -around the Sun) [3]- [5].…”

Section: Introductionmentioning

confidence: 99%

Mono-axis vs Bi-axis Tracking for a String of Photovoltaic Modules

Tatu¹,

Alexandru²

2024

RE&PQJ

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This paper presents a comparative study of motion laws applied to a mono-axis string of photovoltaic modules and to a bi-axis system. This study will reveal which system is more efficient (inclusive economically) in the geographical area of Braşov and under which conditions. There are two types of tracking systems: mono-axis and bi-axis, the last being split into other three types of tracking systems according to their rotation axis. First the solar angles and direct solar radiation are computed and graphically modeled. Further the optimum elevation and daily angles are determined. For each interval both tracking efficiencies are calculated and then compared. Also, the yearly tracking efficiencies of mono-axis and bi-axis systems are compared. Taking into account the technical and economical aspects, beside the energy gain of the dual-axis tracking system, it was concluded that a mono-axis system is preferred for the studied geographical area.

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Optimal Power and Energy Modeling and Range Evaluation of a Solar Assist Plug-in Hybrid Electric Tractor (SAPHT)

Cited by 17 publications

References 0 publications

Direct Sun‐Driven Artificial Heliotropism for Solar Energy Harvesting Based on a Photo‐Thermomechanical Liquid‐Crystal Elastomer Nanocomposite

Direct Sun‐Driven Artificial Heliotropism for Solar Energy Harvesting Based on a Photo‐Thermomechanical Liquid‐Crystal Elastomer Nanocomposite

A novel application of stand-alone photovoltaic system in agriculture: solar-powered Microner sprayer

Mono-axis vs Bi-axis Tracking for a String of Photovoltaic Modules

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