Generator-motor for vehicle

A generator-motor for a vehicle comprising:

• a rotor having a rotor core and a plurality of permanent magnets, said rotor core having a plurality of axially extending through-holes disposed at equal intervals in a circumferential direction thereof to accommodate said permanent magnets and to increase circumferential magnetic reluctance thereof and a plurality of auxiliary pole portions disposed between said through holes;
• a stator having a stator core and an armature winding wound around said stator core, said stator core having a plurality of teeth radially extending at equal intervals in a circumferential direction to face said rotor core;
• wherein
• each of said auxiliary poles has a circumferential width that is 30%-55% of a circumferential width of each of said teeth.

A generator-motor for a vehicle comprising:

• a rotor having a magnetic rotor core and a plurality of permanent magnets for forming a magnetic field, said rotor core having a plurality of axially extending through-holes disposed at equal intervals in a circumferential direction thereof to accommodate said permanent magnets and to reduce magnetic flux leakage between said permanent magnets and a plurality of auxiliary pole portions disposed between said said permanent magnets;
• a stator having a magnetic stator core and a multi-phase armature winding, said stator core having a plurality of pairs of a tooth and a slot radially extending at equal intervals in a circumferential direction to accommodate said armature winding;
• wherein
• each of said auxiliary poles has a circumferential width that is 30%-55% of a circumferential width of said tooth.

An interior permanent magnet synchronous machine type generator-motor comprising:

• a stator having a magnetic stator core and a multi-phase armature winding, said stator core having a plurality of pairs of a tooth and a slot radially extending at equal intervals in a circumferential direction to accommodate said armature winding;
• a rotor having a magnetic rotor core and a plurality of permanent magnets for supplying magnetic flux to said armature winding, said rotor core having a plurality of axially extending through-holes disposed at equal intervals in a circumferential direction thereof to accommodate said permanent magnets and to form auxiliary poles between said permanent magnets;
• wherein
• each of said auxiliary poles has a circumferential width that is 30%-55% of a circumferential width of said tooth.