The invention provides a dual three-phase permanent magnetic
synchronous motor, an electric automobile and a method of the dual three-phase permanent magnetic
synchronous motor. Compared with a traditional multi-phase motor, dual three-phase permanent magnetic
synchronous motor has the advantages that by placing an axial
stator on an end portion of a rotor, the end portion of the rotor is made full use of,
magnetic leakage effect of the end portion is reduced, a use ratio of a permanent
magnet is increased, a better
magnetism gathering effect can be generated since a permanent
magnet is placedon a surface of an axial end of the rotor of the motor, the motor is enabled to be higher in iron core
magnetic flux density and air gap
magnetic flux density, a use ratio of an iron core material ofthe motor is increased, weight of the motor is reduced,
power density and
torque density of the motor are increased remarkably, and the weight of the motor is furtherly reduced; a
magnetic circuit ofan axial end portion, without the permanent
magnet, of the rotor of the motor is parallelly connected with a radial
magnetic circuit of the motor, by regulating the mixed magnetic circuits, an operation range of
constant power of the motor can be enlarged, and the defect that the
power density and efficiency are decreased after the operation range of the
constant power of a traditional permanentmagnetic synchronous motor is enlarged is overcome.