Motor stator for compressor, permanent magnet motor, and compressor

A motor stator comprising:

• a stator core comprising a plurality of stator teeth spaced along a circumferential direction of the stator core, wherein any adjacent two stator teeth define a stator slot;
• a stator winding comprising a plurality of coil groups,
• wherein each coil group of the plurality of coil groups is wound around a corresponding stator tooth of the plurality of stator teeth, and
• wherein each coil group of the plurality of coil groups comprises at least two connectors;
• and
• a plurality of lead-out wires configured to couple an external circuit and the stator winding,
• wherein each lead-out wire of the plurality of lead-out wires is coupled with at least two connectors from different coil groups of the plurality of coil groups,
• wherein the motor stator satisfies the following relationship:
• Un/(Dmax2×L)≤0.3 V/cm3,
• where Un is a rated voltage between terminals on which a motor including the motor stator is mounted,
• where Dmax is a maximum outer diameter of the stator core, and
• where L is an axial length of the stator core.