Search academic texts

Information × Registration Number 0223U002019, 0122U001221 , R & D reports Title Technical means based on inhomogeneous dielectrics for electrothermal protection of solar panels in spacecraft power plants popup.stage_title Head Kolbunov Vadym R., Кандидат фізико-математичних наук Registration Date 07-02-2023 Organization Oles Honchar Dnipro National University popup.description2  Object of research: processes of creation of innovative technical means of electrothermal protection of photovoltaic components of solar cells for power plants of space aircraft based on solid-state combined structures using heterogeneous dielectrics. The purpose: creation of a solid-state combined structure based on heterogeneous dielectrics for technical means of protection against electrical overvoltages of photovoltaic components of solar batteries suitable for use in power plants of space aircraft. The novelty is that technical means of protection have been developed based on new solid-state materials and combined structures with unique electrothermal properties. At the first stage, the optimal parameters of varistor, positor and thermistor materials of modern electronics and the methodology of obtaining structures based on them, suitable for use as technical means of limiting overvoltage in solar batteries, were determined. Methodical recommendations for the construction of low-voltage varistor structures from 5 V to 6 V for voltage limiters based on a two-layer structure have been developed. Mathematical modeling of the functioning and electrical and thermal characteristics of such technical devices was carried out, which is based on generally accepted ideas about the conduction mechanisms of varistors, polymer nanocomposite posistor and thermistor materials with a semiconductor-metal phase transition. In particular, the given results of modeling and analysis of the influence of electrical and thermal regime features on the operation of a voltage limiter based on a combined structure of layers of metal oxide varistor ceramics and a posistor polymer nanocomposite made it possible to establish the following patterns. The results of the NDR are important for increasing the reliability of the functioning of power plants of space vehicles, the economic stability of the power generation sphere, the defense capability and national security of the state. Product Description popup.authors Hilorme Tetyana V. Kolbunov Vadim R. Lyashkov Olexandr Yu. Mazuryk Stanislav V. Nakashidze Liliya V Statsenko Volodymyr I Tonkoshkur Oleksandr S. popup.nrat_date 2023-02-07 Close