Mixed excitation stator surface-mounted double-salient motor

Abstract

The invention relates to a mixed excitation stator surface-mounted double-salient motor adopting a modularized rotor, which is characterized in that a stator part adopts a centralized armature winding and a centralized excitation winding, stator teeth are divided into two groups, i.e. a group of stator teeth with permanent magnets and a group of stator teeth being sleeved with armature winding coils, and the armature teeth and the permanent magnetic teeth are alternately distributed. The permanent magnets which are alternately magnetized in the radial direction are respectively mounted on the surface, facing a rotor, of the stator permanent magnetic tooth. Each coil of the armature winding is respectively sleeved on one stator armature tooth, and each coil of the centralized excitation winding is respectively sleeved on one stator permanent magnetic tooth. The structural advantages of the stator surface-mounted double-salient permanent magnet motor such as compact structure and easiness in heat radiation are maintained, a mixed excitation function can be realized without additionally increasing the size of the motor, the strong torque output capacity and high power density of the motor can be guaranteed, the motor is particularly suitable for the application occasion requiring small size and large output torque, and the large torque of a constant-torque area and a wide speed regulation function of a constant-power area can be realized.

Description

technical field [0001] The invention is an armature coil turn chain with bipolar permanent magnet flux linkage, a double-salient pole brushless motor with high permanent magnet utilization rate and a modular rotor, especially a motor with mixed excitation function, which belongs to the motor manufacturing industry technical field. 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 effic...

AI Technical Summary

Problems solved by technology

Among them, the structural principle of the flux reversal motor is to install two permanent magnets with opposite polarities side by side on each salient pole stator tooth. The purpose is to obtain a bipolar permanent magnet flux linkage, but this structure directly leads to two The magnetic steel and the stator teeth form a short circuit, and the magnetic flux leakage is serious, which reduces the utilization rate of the unit magnetic steel

In the traditional stator surface-mounted motor, the armature flux linkage changes in unipolarity, which reduces the utilization rate of the permanent magnet. However, the present invention proposes a Hybrid excitation stator surface mount brushless motor with modular rotor, trying to achieve hybrid excitation function without major modification on the basis of maintaining pure permanent magnet motor

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