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The paper "A portable high-efficiency electromagnetic energy harvesting system using supercapacitors for renewable energy applications in railroads" by Zhang et al. responds to the growing demand for more efficient, inexpensive, and sustainable energy sources. Zhang et al. create a high-efficiency, portable system for harvesting electromagnetic energy using supercapacitors capable of transferring the energy of track vibrations into reliable electric power. The generated electricity is then stored in supercapacitors and made available for use in rural regions as standby power for various rail-side components or safety facilities. A regulating circuit and a mechanical power transmission device are included in the proposed energy harvesting system. The gears and rack components act both as transmission and power input, and they amplify the track's small vibrations while one-way or one-directional bearings increase the efficiency of the system by converting bidirectional motion into unidirectional rotation. The proposed system is the first to utilize supercapacitors in vibration energy extraction, and the role of supercapacitors is to allow the storage the generated energy. A demonstration of the system’s workability using dynamic simulations indicates a 55.5 percent efficiency, which confirms its effectiveness and practicality in the generation of renewable energy, usable in railroads.
In my view, the proposed system is highly likely to play an essential role in boosting the economy, as well as improving the people’s everyday life if fully implemented. Railroad transport forms a vital component of any economy in today’s society and using the proposed system to enhance its efficiency would greatly boost its contribution to economic development, especially in the remote areas where power is unreliable. Besides, the proposed system would ensure the safety of the railway system by providing an adequate supply of power to rail-side electrical equipment.
The topic presented in the article is of interest to me because it allows me to understand how supercapacitors can be used in developing a portable, high-efficiency system for energy harvesting, for various railroad applications. Besides, the topic enables me to broaden my understanding regarding the mechanism of converting a bidirectional motion into a unidirectional rotation, which forms the basis for its efficient and high performance in harvesting energy for railroad safety devices. Through the presented topic, I am in a position to understand how supercapacitors can speedily capture and rectify the system's input energy, which is critical in the system's energy harvesting process. Another aspect that attracts my attention in the topic is its considerations of portability and ease of installation.
Yes, the work presented in the article inspires a new idea in me. The proposed system comes at a time when several other energy generation systems are already in use. However, the proposed system emphasizes efficient high power generation and considers portability. The previous methods such as piezoelectric designs have challenges of low-power generation and are only suitable for microelectronics and micro-electromechanical systems. The proposed system, therefore, inspires me to find ways of improving the previously developed systems to equally make them capable of harvesting high power with high efficiency. Improving the previously developed energy harvesting systems would ensure the availability of adequate, reliable, and affordable power, as well as enhancement of energy management.
The work presented in the article is of great importance to our society. That is because it develops a highly efficient, portable, and affordable source of power for rail-side equipment in various remote areas. Besides, by creating a mechanism for harvesting the natural environment’s ambient energy, the presented work forms one of the most desirable energy solutions for the remote areas in our society, which lacks adequate and reliable electrical power for installation and maintenance of various rail-side equipment. Additionally, the presented work focuses on harvesting energy from tracks and would therefore significantly boost various railroad applications, including standby power supplies and safety facilities in different remote areas.
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