Comparison of a 5MW permanent magnet assisted synchronous reluctance generator with an IPMSG for wind application

This article presents a performance comparison of a 5MW interior permanent magnet synchronous generator (IPMSG) with a 5 MW permanent magnet assisted synchronous reluctance generator (PMa-SynRG) with the same stator, to be used for a wind energy application. It is found that PMa-SynRG has lower rotor weight as well as 14 % lower magnet weight with the same maximum torque performance. For wind speeds lower than 8.5 m/s the PMa-SynRG has less loss. Moreover, the machine annual energy efficiency for the PMa-SynRG is higher for average wind speeds between 5-10 m/s.