Water cooling, PSG, PCM, Cryogenic cooling strategies and thermal analysis (experimental and analytical) of a Permanent Magnet Synchronous Motor: a review

The analysis of the Permanent Magnet Synchronous Machine, especially with the high power density and more efficient cooling system is of great practical significance to lower greenhouse gas, to lessen climate change. This paper gives a detailed review of advanced cooling methods and applications to the permanent magnet synchronous motors, as well as presents experimental and analytical analyses of the cooling methods and design problems for permanent magnet synchronous motors applications. The main authors' claims and objectives focus on water jacket cooling methods and their requirements of efficient permanent magnet synchronous motors cooling system. Also, the water-cooling system with cryogenic, Potting silicon gelatine (PSG), and phase change materials (PCM) methods are identified investigated. First, the different heat sources are, and the various temperature effects together with their influences on the permanent magnet synchronous motors performances are studied. The main part of the work includes an evolution overview of the water-cooling methods with thermal-performance analysis. Also, the PMSM temperature control main benefits are investigated, and some unsolved problems regarding optimal motor cooling model design are commented on. Finally, recent advances in the permanent magnet synchronous motors cooling methods and future scope are presented.