The article is devoted to the improvement of control systems for wind turbines by developing fuzzy controllers with higher transient characteristics and low computational costs of identification in comparison with the applied PI controllers. Based on the self-organization method, a fuzzy speed controller of the doubly-fed induction generator (DFIG) of a wind turbine was synthesized, which uses a zero-order Sugeno fuzzy inference system and is made in the form of a block-oriented Wiener model. This regulator is an element of the vector control system of the transistor converter on the rotor side. The results of simulation modeling of the fuzzy controller showed that it provides a lower transition time compared to the PI controller, by 53.59% during acceleration and by 79.76% during braking, and 23.81% less error speed deviations from the reference signal. Such indicators can minimize losses while maintaining the maximum output power point of the power plant. The implementation of the developed system on wind turbines contributes to increasing the efficiency of wind farms, reducing the cost of electricity production, reducing the payback period of equipment, and the sustainable development of alternative energy in general.
The monograph examines the prerequisites and scientific foundations for creation of the Strategy for Artificial Intelligence Development in Ukraine as well as means and ways of its effective implementation. For specialists, postgraduate, and graduate students in the field of artificial intelligence, information technologies, philosophy, state formation, and economics
The significant influence of industrial enterprises provokes sharp climatic changes, which are especially felt locally. Such loads on the ecology of the environment, caused by the activities of industrial enterprises, endanger the safe existence of individual biological individuals and the sustainable development of the social economy in the future. One of the important reasons for such changes is the increase in emissions of greenhouse gases, harmful gases and dust. Meanwhile, a number of issues related to the problem of reducing the ecological burden on the environment through decarbonization of Ukraine’s electricity industry remain unresolved. At this stage of implementation, the Smart Grid concept is considered from the point of view of electrical networks, although in the future it will be a combination of electrical, fuel and heat networks. The International Energy Agency sees hydrogen as a link between these networks. The analysis of the possibility and features of the implementation of the concept of decarbonization of power supply systems of industrial enterprises in the aspect of sustainable development showed the relevance of the implementation of distributed generation sources using buffer storage of electric energy in order to stabilize the level of generated electric energy. It is proposed to use solid polymer electrolyzers as buffer accumulators of electric energy generated by sources of distributed generation based on renewable sources.
When mining deposits with room-and-pillar methods with backfilling, available hanging wall rocks and ores of medium or low stability can cause hanging wall rock collapses into stoping areas, thus causing escalation of ore dilution with waste rocks. The research work is aimed at determining areas of maximum stresses and their quantitative characteristics which can cause collapses of hanging wall rocks in the mined-out stope area and developing technological solutions to reduce concentration of stresses. Options of mining stopes located on the hanging wall of the deposit are investigated on polarization-optical models. According to the results of studying polarization-optical models with different designs of stope chains, there are obtained stress fields for each model in the zone of stope influence. The research reveals that when using a stoping method with partial processing of hanging wall rocks in the contact plane with the country rocks, the maximum stresses are much higher than in case of the arched form of the stoping area. On the basis of the obtained research results, it is recommended to carry out chambers with the formation of a vaulted shape of the roof from the hanging side in order to reduce the clogging of the ore.
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