This paper gives an overview and comparative characteristics of the main rotors available today, with properties suitable for the climatic conditions of Almaty and Almaty region, along with their critical mode of operation. A number of studies is carried out analysing the intrinsic features and capabilities of rotors, through which the problem of choosing an optimal rotor model for the subsequent design of a wind generator control unit is solved. One of these studies is a computer simulation of the main existing rotors operating in the same climatic conditions. The selected model must fully comply with the given environmental conditions of the selected area, in which the maximum wind speed and its critical value are set for all the studied rotor models. Thanks to the comparative studies on the technical characteristics of the most commonly used rotors, as well as to the modelling results, conclusions are drawn for the most effective and optimal choice to be employed in the design of a wind generator for the climatic conditions of the Almaty region.
This article provides a solution to the problem of not improving three-dimensional systems with light sensors in tracker systems for solar panels, due to the inefficiency of operation in cloudy weather, with an increase in precipitation and contamination of photodetectors. The paper shows the calculation of the position angle of the tracker system relative to the changing position of the sun. The GPS system is able to automatically determine the location of the solar panel (latitude, longitude), then the microcontroller with the developed program performs a mathematical calculation, and the system automatically adjusts the solar panel to the sun. Thus, the need to use a photo sensor is eliminated, since the system automatically determines the optimal angle between the sun and the solar panel.
Eddy current sensors are used to measure shaft clearance in wind turbines and to check that there is a thin film of oil in the clearance. In this case, the oil is usually applied under pressure. Because the eddy current sensors are resistant to oil, pressure and temperature, this allows them to operate reliably in these hostile environments. When the gap becomes too large, a maintenance warning is generated. Eddy current sensors help detect axial and radial deflection of the turbine shaft. Radial movement occurs when the shaft is off-center. Axial movement indicates that the shaft is tilted relative to the central axis. Both cannot be eliminated completely. However, with significant deviations, increased bearing wear occurs. If such situations are detected, the turbine should be shut down as soon as possible for maintenance, even before an accident occurs. Finally, eddy current sensors are used to measure forces or torques applied to the nacelle. These influences can be caused by vibration, wind loads or other factors that, over time, can lead to the destruction of the entire structure. Eddy current sensors can also be used to measure axial, radial or tangential deflection of clutch discs, which ensure the safety of the rotor in the event of strong winds. This article provides a method for calculating an inductive sensor. This calculation will allow you to correctly develop a wind turbine eddy current sensor.
The world energy industry today is at a new stage of development, which is characterized by the strengthening of integration processes, the development of new technologies in the field of extraction and production of energy resources. The energy sector of Kazakhstan was designed with the understanding that it was part of the energy sector of the Soviet Union. Today Kazakhstan follows international development trends in the field of energy. To make a reliable forecast of the Kazakhstani energy sector, it is necessary to look at the global processes in the development of the world energy industry. There are several organizations that have this information. These are the International Energy Agency (IEA), the UN, the World Bank, large-scale international companies, etc. In forecasting energy consumption in Kazakhstan, as part of the Eurasian Economic Union (EAEU), it is important to look at the forecasts for the EAEU member countries. This article provides basic information on forecasting the growth of electricity consumption in the world and in Kazakhstan, based on various sources. It also provides a comparative analysis of the use of various sources of electrical energy. A detailed analysis of the energy sector of Kazakhstan and the prospects for the use of renewable energy in Kazakhstan are considered.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.