Composite excitation type magnetic flux reverse motor

Abstract

The invention relates to a composite excitation type magnetic flux reverse motor. On one hand, a stator part uses a concentrated armature winding and an excitation winding, a straight slot (or skewed slot) rotor is used, and a permanent magnet is stuck to the surface of a stator tooth; and on the other hand, the rotor part is a salient pole and does not have a permanent magnet or winding, and thestructure is very simple and firm. The electromagnetic performance of a plurality of concentrated armature coils which form a one-phase armature winding is controlled by the corresponding excitation winding coils through the excitation current. The composite excitation type magnetic flux reverse motor keeps the advantages of compactness, simplicity, good robustness and fitness for high-speed operation of a permanent-magnet type magnetic flux reverse motor in structure, can achieve the function of composite excitation without additionally increasing the volume of the motor, ensures that the motor has stronger torque output capability and higher power density, is especially suitable for application places requiring small volume and large output power, and can realize large torque in a constant torque region and a wide speed adjusting function in a constant power region.

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] As the energy crisis intensifies The use of permanent magnet excitation to replace electric excitation to save energy consumption has become the consensus of the world. At the same time, since my country is the country with the richest rare earth resources in the world, the development, research, promotion and application of rare earth permanent magnet motors with new structures have 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 output, and wide in ...

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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