Design aspects and performance analysis of inner and outer rotor permanent magnet alternator for direct driven low-speed wind turbine

The outer rotor permanent magnet alternator is unrivaled for low-speed wind turbine frameworks because of it's robust structure, low maintenance and construction cost while the inner rotor permanent magnet alternators are most economically accessible for its customary auxiliary setup. In this research, a comparative study of design and performance analysis between an inner rotor PMA and an outer rotor PMA used for low-speed and small capacity wind turbine system has been overviewed using simulation. The basic setup like materials, magnets and some electrical and mechanical parameters are concentrated on, and the performance parameters of PMAs are observed by changing these rudimentary electromechanical parameters. By considering all of these contemplations, higher productivity from the outer rotor PMA with higher efficiency has been accomplished compared to that of inner rotor PAMs for low-speed wind turbine system.