an improvement on slot configuration structure of a low-speed surface-mounted permanent magnet synchronous generator with a wound cable winding

This paper concentrates on low-speed surface-mounted permanent magnet synchronous generator (ls-smpmsg) electromagnetic design using finite-element (fem)-based method. the introduced ls-smpmsg is utilized in marine energy conversion (mec) and tidal energy conversion (tec) systems. the main feature of the designed ls-smpmsg is its ability to generate electrical power in mec and tec systems at a low speed of approximately 100 rpm. in the second part, a new slot structure for ls-smpmsg has been proposed to enhance the ls-smpmsg performance. the fem analysis shows that the new slot structure led to reducing the torque ripple and the cogging torque equal to 19.54% and 87.5% respectively. also, it influenced the ls-smpmsg joule losses by 16.1% reduction. another advantage of the new slot structure of ls-smpmsg is its easy construction and assembly. the fem analysis validates the advantages of the proposed structure.