Годишник, 2018, Том XXXVIII
Permanent URI for this collectionhttp://research.bfu.bg:4000/handle/123456789/822
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Item СЪВРЕМЕННИ МЕТОДИ ЗА ИНЖЕНЕРИНГОВИ РЕШЕНИЯ В СГРАДНИ ЕНЕРГИЙНИ СИСТЕМИ(Бургаски свободен университет, 2018) Симионов, РадославThe distribution of electricity is one of the most important things in the energy sector. The increasing number of buildings, the development of the industry and the increase in the number of electrical equipment lead to an increase in electricity consumption. Current power transformers are currently used for power distribution. They are reliable and cheap. The reasons for searching for modern methods of electrical distribution are the harmful emissions from transformer oils, the harmful emissions from the resins used in dry transformers, the electromagnetic radiation and the space required for the transformer location and the necessary protective equipment. This article explores power electronic transformers designed to replace a conventional power transformer to reduce emissions, reduce electromagnetic emissions and position in smaller buildings.Item DAMAGE INFLUENCE OF PV-MODULES ON THE EFFICIENCY OF THEIR WORK(Бургаски свободен университет, 2018) Лецковска, Силвия; Сейменлийски, Камен; Заеров, Елдар; Симионов, РадославThis paper presents some of the methods for testing photovoltaic modules to detect faults and defects in them. There are results from experimental tests for detecting defects in the modules of the photovoltaic plant installed on the roof of Burgas Free University.Item MODERN TECHNOLOGICAL SOLUTIONS IN ELECTRICITY SUPPLY(Бургаски свободен университет, 2018) Сейменлийски, Камен; Лецковска, Симвия; Заеров, Елдар; Симионов, РадославThis paper examines the impact of electrotechnical installations on the environment, in particular the influence of an electromagnetic field, a source of which in the residential buildings are the transformer substations, the distribution boxes for power supply, as well as the conductors from the supply network. Attention is paid to thermal imaging as a modern technological solution that can be successfully applied to the diagnosis of building energy systems.