In order to reflect the superiority of lowloss amorphous alloy, a 15 kW, 1 000 Hz motor was used to perform noload iron losses simulation. The motor stator core was made from amorphous alloy, and treated with dipping coating and curing process. The motor noload iron loss calculation includes the separation of basic iron loss of amorphous stator and the calculation of noload stray losses. It was obtained that the amorphous alloy motor stray loss was 6.03 times of the basic iron loss. Comparison was made with the 50DW310 stator. Under noload operation, the amorphous alloy noload iron loss was about 18.82% of silicon steel 50DW310 noload iron loss, and the motor efficiency could be increased by 3.48 percentage points.