Mixed field excitation type flux switch motor

Abstract

The present invention provides a hybrid field excitation flux switching electric motor. On one hand, a stator part adopts a centralized armature winding, an exciting winding, a straight channel rotor, and a permanent magnet arranged in the stator. On the other hand, the rotor part is a salient pole and is not provided with a permanent magnet or a winding. The structure is extraordinary simple and durable. The electromagnetic capability of four centralized armature coils which are designed to form a single-phase armature winding is controlled by the corresponding exciting winding coil through the exciting current. On structure, the advantages of compactness, simpleness, good robustness and suitability for operation with high speed of the permanent magnet flux switching electric motor are kept. The function of hybrid field excitation can be realized without additionally adding the volume of the electric motor. The electric motor is guaranteed to have stronger torque output capability and higher power density. The electric motor is especially suitable for the application occasion with high volume and large output. The functions of large torque in torque-constant area and broad velocity modulation in power-constant area can be realized.

Description

technical field [0001] The invention is a motor with simple and firm structure, strong torque output capability and high power density, especially a motor capable of realizing mixed excitation function, which belongs to the technical field of motor manufacturing. Background technique [0002] With the intensification of the energy crisis, it has become the consensus of the world to use permanent magnet excitation instead of electric excitation to save energy consumption. At the same time, since my country is the country with the richest rare earth resources in the world, it is necessary to develop, research and promote the application of new structure rare earth permanent magnets. Motor has important theoretical significance and practical value. Especially for hybrid electric vehicles, which are widely studied at present, the motor drive system is required to be small in size, light in weight, high in efficiency, strong in reliability, free of maintenance, large in torque out...

AI Technical Summary

Problems solved by technology

In order to provide a path parallel to the permanent magnet flux in the radial or axial direction for the electric excitation flux, the proposed motor structure is very complicated, and it faces huge challenges in terms of manufacturing process and mass production of finished products. challenge

If a hybrid excitation motor needs to make a major sacrifice in terms of structural complexity in order to achieve magnetic field adjustment, its competitiveness will be greatly reduced

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