External rotor type motor with multiple rotors and multiple stators

Abstract

The invention relates to an external-rotor-typed motor with a plurality of rotors and stators, comprising a motor part and a controller part; wherein, at least two groups of the motor parts which share one rotor shell are provided; the rotor shell is divided into at least two cavities by a supporting frame which is fixed with the rotor shell; a magnetic steel in each cavity is rotatablely connected on the rotor shell; simultaneously, a rotation shaft is pressed in the supporting frame so as to form a structure with the coaxial output of a plurality of rotors; an end cover is symmetrically arranged at two ends of the shell and is matched with the shell and locked to the shell; simultaneously, the end cover is closely matched with the stator punching sheet and movably sheathed with the rotation shaft. A stator winding is connected with the controller part. The design adopts the proposal of one rotor shell and coaxial output, and has the balanced supporting at the middle, thus having the advantages of balanced torque, large volume power density, compact structure, large torque and the like.

Description

technical field [0001] The invention relates to a permanent magnet synchronous motor, in particular to an outer rotor type multi-rotor and multi-stator motor. Background technique [0002] As we all know, permanent magnet synchronous motors are widely used in power systems, and one of their characteristics is that they can be adjusted steplessly through electronic control circuits. However, as the required output power of the motor increases, the efficiency of the motor decreases. To increase the power and efficiency of the motor, the diameter of the entire motor must be enlarged, resulting in an uncompact structure and an ineffective reduction in volume. For this reason, people have thought of transmitting torque through two motors, and the connection of the two motors realizes output through a coupling, but the structure is huge and not compact, and the power loss of the motors is large. At the same time, when working in a low voltage state, the start-up operating current...

AI Technical Summary

Problems solved by technology

The system is essentially still composed of two motor couplings. Although it can realize multifunctional power output and energy saving, its structure is not compact and its torque is unbalanced.

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