This book provides a systematic and detailed overview of the key methods used in the thermal-physical design of functional units and blocks of electrical power systems (EPS). It also addresses issues related to ensuring the strength and rigidity of EPS structures. Intended for students specializing in "Design and Technology of Electrical Power Systems" (program 210200) and "Design and Manufacturing of Electronic Devices" (program 211000), the book is a valuable resource for studying "Computer Technologies for Thermal and Mechanical Analysis." It is also useful for conducting laboratory work and coursework projects, and can serve students in related fields and various forms of study.