Abstract-Lithium-ion battery (LIB) technology further enabled the information revolution by powering smartphones and tablets, allowing an unprecedented performance of these devices against reasonable cost. Currently, this battery technology is on the verge of carrying the revolution in road transport and energy storage of renewable energy. However, to fully succeed in the latter, a number of hurdles still need to be taken. Battery performance and lifetime constitute a bottleneck for electric vehicles as well as stationary electric energy storage systems to penetrate the market. Electrochemical battery models are one of the engineering tools which could be used to enhance their performance. These models can help to optimize the cell design and the battery management system. In this study, the authors evaluate the ability of the Porous Electrode Theory (PET) to predict the effect of changing positive electrode density in the overall performance of Li-ion battery cells. It can be concluded that Porous Electrode Theory (PET) is capable of predicting the difference in cell performance due to a changing positive electrode density.

No abstract

No abstract

The paper proposes the innovative system of connecting digital terminals to a personal computer of a traction substation and a power dispatcher via remote access thus expanding control and observation over the system and facilitating the operation with In-Ter device. The real time work of In-Ter terminals can be performed by a power dispatcher and can be monitored by an engineer of the technical department of the energy service of an enterprise. This option will allow obtaining useful information quickly and changing the protection settings of a terminal if necessary, analyzing the compliance of loadings, emergency currents and settings in the technical department of the energy service of the enterprise to decrease cases of false activation of protection.

The article describes the effect of reducing general operating speed of the automatic control system which deteriorates the performance. Synthesis of the response function of the pulse converter was analyzed. The function takes into account the time of a electromagnetic transient process of the single-cycle converter. A mathematical model of the DC/DC converter as part of the element base of an adjustable electric drive was built.