Review Of Key Technologies Research Articles

A review of key technologies in relation to large-scale clusters of electric vehicles supporting a new power system

The construction of a new power system based on new energy sources can support the successful transition of energy consumption toward a low-carbon environment. Large-scale clusters of electric vehicles (EVs) are an important reserve measure supporting the flexibility of the new power system. To summarize the roles of EVs as a reserve measure in practical engineering applications, in this study we analyze three essential elements of EV clusters: control of dispatching, participant behavior, and information communication. First, the characteristics of clusters of EVs that participate in power system operations were analyzed in terms of their physical resources, aggregation and control structure, dispatching strategies, and market mechanisms. Second, the importance of social factors was emphasized, and the limitations of computational and experimental simulation methods used in decision-making behavior research were confirmed. Next, the evolution of hybrid simulation methods integrating human participants, multi-agents, and mathematical models was analyzed. Finally, given the conflicting challenges of maintaining both the security and the economy of the communication network, we discussed the problems and potential solutions relating to full-domain communication coverage, spectrum resource interference, communication security, and customized priority design enabling large-scale clusters of EVs to gain access to the power grid from the perspective of the fusion of the public communication network and the dedicated communication network. The results of our study provide technical and economic reference points and a feasibility guarantee that enable more distributed reserve resources for power systems in various countries and regions.

Review of Key Technologies for Developing Personalized Lower Limb Rehabilitative Exoskeleton Robots

Review of Key Technologies for Developing Personalized Lower Limb Rehabilitative Exoskeleton Robots

A Review of Key Technologies and Properties for Graphene Cu-Based Composites

Cu-based composites are widely used in mechanical, electrical, communication, transportation and microelectronics industries due to their excellent properties. However, the difficult match between strength and conductivity is the main problem for Cu-based composites. And thermal-mechanical treatment technologies reached the limit to improve and control their comprehensive performance. Graphene is a two-dimensional layered material with carbon atoms hybridized by SP2 orbital, and has high strength, good electrical conductivity and thermal conductivity. It is expected to solve the contradiction between the strength and conductivity of the composites by introducing graphene into Cu-based composites. In this paper, the commonly used methods for effective dispersion of graphene and interface bonding were introduced, the researches on the strength, toughness, electrical conductivity and thermal conductivity were outlined, lastly the future development of graphene Cu-based composites was prospected.

Development of electric construction machinery in China: a review of key technologies and future directions

Development of electric construction machinery in China: a review of key technologies and future directions

A Review of Key Technologies and Trends in the Development of Integrated Heating and Power Systems in Agriculture.

Petroleum agriculture, characterized by mechanization and chemistry, is developing rapidly in China. However, petroleum agriculture has not only brought food safety problems, but also caused great obstacles to the sustainable development of society. In view of the disadvantages of oil agriculture, we provide an upgrading plan for energy systems in agriculture. This work can help reduce carbon emissions and improve food security. We introduce the most advanced technologies in Chinese agricultural development and the technical scope includes new agricultural energy power generation, agricultural energy use and the safe operation of agricultural energy systems. We describe the detailed data of agricultural bioenvironmental and energy engineering to clarify the level of agricultural energy efficiency in China. The overall conclusion of this paper is that the deep integration of agriculture and energy internet has become the development trend of agricultural energy systems.

Review of Key Technologies and Progress in Industrial Equipment Health Management

Industrial equipment health management is an extension of traditional fault diagnosis, which is a frontier research field of information science. The definition and application area of industrial equipment health management are first clarified, and then technologies related to health management are introduced, including feature analysis, fault diagnosis, fault prognosis and other technologies. The difficulties and bottlenecks of various technologies are expounded through comparative analysis, and a feasible scheme for future health management and integration is also discussed in this article.

Review of Key Technologies and Application Status of Flywheel Energy Storage Systems

The working principle of Flywheel Energy Storage Systems (FESS) is described. Then the FESS's key technologies are analyzed: FESS is an integrated system which has the feature of multidiscipline intersection. To improve its performance indexes, the rotational drag, electromagnetic coupling and created heating of FESS should be decreased. Therefore, the key technology affecting FESS includes flywheel design, magnetic bearings technology, high-speed rotor dynamics, motor/generator and energy conversion technologies, and long time maintaining vacuum technology. Lastly the FESS's application status is discussed: With the development of key technologies, the application of FESS has extended to the fields of UPS, grid, marine etc.