Double-stator single-rotor rare earth permanent magnet motor

Abstract

The invention discloses a double-stator single-rotor rare earth permanent magnet motor, which relates to the technical field of motors, in particular to a low-voltage high-power rare earth permanent magnet motor. The motor provided by the invention has two stators and a rotor. The rotor is positioned between the two stators. Armature windings are embedded into wire embedding slots of special rotor cores. A plurality of rare earth magnetic steels are embedded into magnetic conducting rings of the rotor, and provide a multipole magnetic field for air gaps on a left side and a right side. A starting winding and a damping winding are arranged in the rotor. Each stator can drive the rotor to rotate. The two stators can be loaded both simultaneously and respectively, also can be unloaded respectively, and can be controlled in both a direct current way and a frequency modulation mode. The two stators are fixed at the two ends of a housing by a front end cover and a rear end cover. A shaft runs through the rotor and connected with the rotor by a key. The rotor rotates to drive the motor shaft to rotate to output mechanical power. The double-stator single-rotor rare earth permanent magnet motor has the advantages that: sectional areas of a live conducting wire and the winding embedding slots of the cores are ensured; the temperature rise of the motor is controlled; the output power and efficiency are improved; and the designing problems of the low-voltage high-power motor are solved.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a low-voltage and high-power rare-earth permanent magnet motor. Background technique [0002] For high-power rare-earth permanent magnet motors, whether they are DC motors or three-phase AC motors, if the working environment requires a relatively low working voltage, then high power will inevitably lead to high current, which will bring great difficulties to motor design. [0003] For example, the driving motor used in electric vehicles requires high power. If high voltage is used, low current can be realized, but with high voltage, a large number of power batteries must be connected in series, which will bring difficulties and inconvenience to the mutual matching of battery parameters and safe use; With low voltage, although the number of power batteries connected in series is reduced, the working current will inevitably increase. As the current-carrying conductor, the winding en...

AI Technical Summary

Problems solved by technology

[0002] For high-power rare earth permanent magnet motors, whether it is a DC motor or a three-phase AC motor, if the working environment requires a relatively low working voltage, then high power will inevitably lead to high current, which will bring great difficulties to the design of the motor.

[0003] For example, the driving motor used in electric vehicles requires high power. If high voltage is used, low current can be realized, but with high voltage, a large number of power batteries must be connected in series, which will bring difficulties and inconvenience to the mutual matching of battery parameters and safe use; With low voltage, although the number of power batteries in series is reduced, the working current will inevitably increase. As the current-carrying conductor, the enameled wire of the winding must have a large cross-section, and the cross-section of the armature core wire groove must also be large, which is difficult to achieve for the conventional design of the motor.

Images