The paper deals with development of an FeSi3 additively manufactured (AM) nine-phase radial-flux permanent magnet synchronous machine (PMSM) compact unit with segmented stator core and integrated oil cooling. The analytical design is verified by the Finite element method. Numerical calculations were also used to analyze the cooling oil flow and heat transfer in the cooling axial channels. The proposed concept demonstrates a novel combination of multiphase drive architecture, additive manufacturing, and embedded cooling for next-generation electric drives.

This paper presents the development and experimental validation of an intensive cooling method for electric machines based on direct air jet impingement on the end windings. The goal was to create an effective alternative to traditional shaft-mounted fan cooling methods, inspired by spray cooling techniques. Three air distributor designs were tested, evaluating cooling performance through maximum winding temperature measurements and calculated heat transfer coefficients. Numerical CFD simulations supported experimental findings and guided design optimizations.

This paper presents analytical thermal models of 7 different rotors with permanent magnets, which are used as sub-models in universal thermal management software, which is currently being developed at our university. Whole software is created as script in MATLAB interface and is based on equivalent thermal network. For each of the rotor topology is created thermal circuit, which can accurately calculate temperature distribution, and fits into software algorithm. All analytical models are verified by numerical finite element analysis.

Thermal analysis is one of the key aspects of electrical machine design. This paper presents an analysis of lumped parameter thermal model (LPTM) of the electrical machine. The paper shows a comparison of the different sizes of thermal models. Different quantities of the thermal nodes in the LPTM are analyzed. The main advantage of research is the reduction of the number of thermal nodes in the thermal model which leads to reducing calculating matrices and also reducing computing time. Several modifications of the thermal networks are applied at the permanent magnet synchronous motor (PMSM) and that are experimentally validated, also finite element analyses are applied and compared.