Halbach array disk-type motor

Abstract

The invention discloses a halbach array disk-type motor, which comprises a rotor, a stator, a fixed shaft and a commutating circuit, wherein the rotor and the stator are connected with each other in series; the rotor comprises a rotor fixing disk and 4n permanent magnet blocks of an annular halbach array; the stator comprises a stator fixing disk, a magnet yoke and 4n coils in the halbach array; the halbach array is adopted by the permanent magnet blocks of the rotor and the coils of the stator of the motor; the electromagnetic field generated by each coil at one side of each permanent magnet block is significantly greater than that of a traditional structure; and the flux density between a permanent magnet ring and an induction ring is high. Compared with an existing motor, the halbach array disk-type motor has higher torque and power density under the same dimension, has smaller dimension and weight under the same output power; through switching a motor power generation working mode and an electric work mode, kinetic energy is recovered when the rotor is braked; the kinetic energy of the rotor is converted into electric energy to recover; the energy consumption is reduced; and in addition, the motor also has the advantages of simple structure, good heat dissipation property, low fault rate and the like, and belongs to a novel disk-type motor.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a Halbach array disc motor. Background technique [0002] The disc motor is often used as the power source of the clutch power or hub power of the electric vehicle. The functions of driving power output, power transmission and braking can be realized through the electrical control of the motor. The power loss caused by the transmission mechanism, thereby improving the performance of the vehicle; [0003] Due to the traditional motor coil arrangement, the existing disc motor has a large volume and a small power-to-volume ratio. As a power source for direct drive or braking, it has certain limitations in the integration of vehicles. Due to its rotor The magnetic energy utilization rate of the permanent magnet block and the stator winding is low. There can only be one pole surface between each permanent magnet block and the energized coil corresponding to the pole piece of the coil,...

AI Technical Summary

Problems solved by technology

[0003] Due to the traditional motor coil arrangement, the existing disc motor has a large volume and a small power-to-volume ratio. As a power source for direct drive or braking, it has certain limitations in the integration of vehicles. Due to its rotor The magnetic energy utilization rate of the permanent magnet block and the stator winding is low. There can only be one pole surface between each permanent magnet block and the energized coil corresponding to the coil pole shoe, and the magnetic field at the other end of the coil and the other end of the permanent magnet block does not participate in the work. , when the coil is energized, the coil is always in the state of doing work in the unipolar electromagnetic field, and the electromagnetic field at the other end cannot be used, resulting in low utilization of magnetic energy. At the same time, the disc motor with this type of structure is often large in size and insufficient in heat dissipation

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