Star disk for a rotor of an externally excited synchronous machine

A rotor, comprising:

• a rotor axis;
• a laminated core arranged on the rotor axis;
• and
• two star disks closing the laminated core at ends thereof, on which conductor windings are wound, each of the star disks including:
• a central disk body, from which multiple webs extend radially;
• a respective end plate provided at an end of each web;
• a respective winding groove between the disk body and each end plate;
• each winding groove being bounded by the respective web forming a groove bottom and laterally by the disk body and the respective end plate, forming groove flanks;
• each winding groove serving to contain a respective conductor winding led around the web and formed from a conductor wire which is wound in multiple layers, wherein the web is provided with flutes running in the winding direction and serving to contain a respective conductor wire segment;
• and
• wherein multiple additional flutes are provided at different heights of the conductor winding on one or both of the groove flanks.

A synchronous machine, comprising a rotor including:

• a rotor axis;
• a laminated core arranged on the rotor axis;
• and
• two star disks closing the laminated core at ends thereof, on which conductor windings are wound, each of the star disks including:
• a central disk body, from which multiple webs extend radially;
• a respective end plate provided at an end of each web;
• a respective winding groove between the disk body and each end plate;
• each winding groove being bounded by the respective web forming a groove bottom and laterally by the disk body and the respective end plate, forming groove flanks;
• each winding groove serving to contain a respective conductor winding led around the web and formed from a conductor wire which is wound in multiple layers, wherein the web is provided with flutes running in the winding direction and serving to contain a respective conductor wire segment;
• and
• wherein at least one additional flute is provided on one of the groove flanks, and the additional flute is provided at a height of a next layer of the conductor winding.