Electrical machine comprising a winding system with coil groups

摘要: Disclosed is an electric machine ( 1 ) comprising a stator 2 that encompasses winding system 10 with three branches, and certain number of effective pole pairs. Each branch provided at least one coil group, each which contains even serially connected individual coils 11 generate magnetic field, respectively. Two respective group are offset relative to other in circumferential direction the such way associated fields electrical angle another sixth harmonic pairs, said being equal odd multiple 180°.