Patent ID: 8614532

Claim:
A permanent-magnet synchronous motor, comprising: a rotor having permanent magnets; and a stator having a stator yoke in which stator teeth with interposed stator grooves are arranged, wherein: at least one winding is provided on each stator tooth; the stator teeth being arranged in layers as plates in the axial direction of the stator and constructed as at least two different plates; the stator teeth in a first plate being peripherally interconnected at the ends thereof pointed towards the rotor in the form of a stator star by a connecting bridge in each case; and the stator teeth in a second plate having an interruption instead of the connecting bridge, wherein the stator teeth are arranged as plates in the axial direction of the stator in the sequence of a stator star having connecting bridges followed by at least one plate of stator teeth without connections; wherein the rotor comprises at least two rotor packets which are arranged in the axial direction of the rotor the at least two rotor packets being arranged rotated from one another by an offset angle about a rotor axis; and wherein the offset angle is less than or equal to half of a number of stator grooves, the offset angle being the angle between the first and last rotor packets if there are more than two rotor packets.