Energy Harvesting Efficiency of III–V Multi-Junction Concentrator Solar Cells under Realistic Spectral Conditions

Author(s):  
S. P. Philipps ◽  
G. Peharz ◽  
R. Hoheisel ◽  
T. Hornung ◽  
N. M. Al-Abbadi ◽  
...  
2010 ◽  
Vol 94 (5) ◽  
pp. 869-877 ◽  
Author(s):  
S.P. Philipps ◽  
G. Peharz ◽  
R. Hoheisel ◽  
T. Hornung ◽  
N.M. Al-Abbadi ◽  
...  

2021 ◽  
Vol 6 (7) ◽  
Author(s):  
Bernardo Luiz R. Ribeiro ◽  
Yunxing Su ◽  
Quentin Guillaumin ◽  
Kenneth S. Breuer ◽  
Jennifer A. Franck

2016 ◽  
Author(s):  
Douglas Da Costa Ferreira ◽  
Fábio Roberto Chavarette ◽  
Jean-Marc Stephane Lafay ◽  
Paulo Rogerio Novak ◽  
Samuel Pagotto ◽  
...  

2018 ◽  
Vol 15 (1) ◽  
pp. 172988141875587 ◽  
Author(s):  
Tao Wang ◽  
Wei Song ◽  
Shiqiang Zhu

Energy consumption has significant influence on the working time of soft robots in mobile applications. Fluidic soft actuators usually release pressurized fluid to environment in retraction motion, resulting in dissipation of considerable energy, especially when the actuators are operated frequently. This article mainly explores the potential and approaches of harvesting the energy released from the actuators. First, the strain energy and pressurized energy stored in fluidic soft actuators are modeled based on elastic mechanics. Then, taking soft fiber-reinforced bending actuators as case study, the stored energy is calculated and its parametric characteristics are presented. Finally, two energy harvesting schematics as well as dynamic models are proposed and evaluated using numerical analysis. The results show that the control performance of the energy harvesting system becomes worse because of increased damping effect and its energy harvesting efficiency is only 14.2% due to the losses of energy conversion. The energy harvesting system in pneumatic form is a little more complex. However, its control performance is close to the original system and its energy harvesting efficiency reaches about 44.1%.


2022 ◽  
Vol 891 ◽  
pp. 162040
Author(s):  
Ikhtiar Ahmad ◽  
Rashida Jafer ◽  
Syed Mustansar Abbas ◽  
Nisar Ahmad ◽  
Ata-ur-Rehman ◽  
...  

Author(s):  
Salah Obayya ◽  
Nihal Fayez Fahmy Areed ◽  
Mohamed Farhat O. Hameed ◽  
Mohamed Hussein Abdelrazik

The solar energy is able to supply humanity energy for almost another 1 billion years. Optical nano-antennas (ONAs) are an attractive technology for high efficiency, and low-cost solar cells. These devices can be classified to semiconductor nano-wires and metallic nano-antenna. Extensive studies have been carried out on ONAs to investigate their ability to harvest solar energy. Inspired by these studies, the scope of the chapter is to highlight the latest designs of the two main types of ONAs. The metallic nano-antennas are discussed based on the following points: plasmon, modeling, and performance of antenna designs using different configurations and materials. Moreover, the semiconductor nano-wires are studied thoroughly in terms of photonic crystals, antenna design with different patterns, nano-wire forms and materials. Also, the applications of ONAs and their fabrication aspects such as diode challenges are presented in detail. Finally, three novel designs of ONAs are presented and numerically simulated to maximize the harvesting efficiency.


Author(s):  
Ziheng Zhu ◽  
Lin Xu ◽  
Mohamed A. A. Abdelkareem ◽  
Junyi Zou ◽  
Jia Mi

Abstract With the recent energy crisis, the new energy harvesting technologies have become one of the hot spots in engineering academic research and industrial applications. By its wide range of application fields, vibration energy harvesting technologies have been gradually developed and utilized in which an efficient and stable harvester technology is one of the recent key problems. In order to improve energy harvesting efficiency and reduce energy loss caused by motor inertial commutation, many mechanical structures or hydraulic structures that convert reciprocating vibration energy into single direction rotation of motor are proposed. Although these methods can improve energy harvesting efficiency, they can have negative effects in some cases, especially in the case of vibration energy harvesting from human beings. This paper proposes a vibration harvesting mechanism with mechanical rectification filter function applied to backpack. The prototype model of the system was established in SolidWorks and imported into ADAMS. Thereafter, dynamic analyses of mechanical rectification filtering characteristics and meshing characteristics of one-way clutch were simulated in ADAMS. Based on ADAMS, parametric design analysis and its influence on the mechanical rectification characteristics were investigated. The simulation results were validated by bench test results. Simulation results is done by ADAMS and the results match well with bench test results.


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