Stator-free brushless dual-rotor outer ring permanent magnet synchronous motor with rotating controller

Abstract

The invention discloses a stator-free brushless dual-rotor outer ring permanent magnet synchronous motor with a rotating controller. An outer rotor comprises an outer rotary shaft, the inner end of the outer rotary shaft is arranged in an enclosure, permanent magnets are arranged at the inner end of the outer rotary shaft in a staggered manner along the circumferential direction, an end cover is arranged at the end part of the inner end of the outer rotary shaft, and the outer end of the outer rotary shaft extends out of a first end of the enclosure; an inner rotor comprises an inner rotary shaft, the inner end of the inner rotary shaft is arranged in the outer rotor, an inner rotor core and an inner rotor winding embedded in the inner rotor core are arranged at the inner end of the inner rotary shaft, the outer end of the inner rotary shaft is arranged on the exterior of the outer rotor, and the end part of the outer end of the inner rotary shaft extends out of a second end of the enclosure; and an inverter is arranged at the outer end of the inner rotary shaft in the enclosure, close to the end part of the inner end of the outer rotary shaft, an inductor structure is arranged at the outer end of the inner rotary shaft in the enclosure, close to the second end of the enclosure, and a rectifier is arranged between the inverter and the inductor structure. The stator-free brushless dual-rotor outer ring permanent magnet synchronous motor with the rotating controller is simple in structure, breaks through the limitation of only one rotary shaft, omits the stator part and is applicable to various occasions.

Description

Technical field [0001] The invention relates to the technical field of motors, in particular to a permanent magnet synchronous motor with a stator and brushless dual-rotor outer ring that is rotated by a controller. Background technique [0002] The dual-rotor motor has two rotors and rotating shafts with independent speeds, which can realize dual-axis independent drive. Therefore, it has broad application prospects in a variety of occasions, such as electric drive systems for hybrid vehicles, and electric stepless for automobiles and wind generators. Transmission and CNC turntable of modern machine tools, etc. [0003] At present, the dual-rotor permanent magnet motor that has been published at home and abroad is a new type of motor in which an outer rotor permanent magnet motor and an inner rotor permanent magnet motor are sleeved together and share a stator. But because it can be regarded as two independent ordinary motors, there must be two controllers, which makes the control...

AI Technical Summary

Problems solved by technology

But because it can be regarded as two independent ordinary motors, there must be two controllers, which makes the control mechanism more complicated, and for the motor body, because there is still a stator part in the structure, the volume is relatively large

At the same time, the inverter is fixed outside the motor, and the connection between the output end of the inverter and the input end of the motor basically adopts the connection method of three brushes. The increase in the number of brushes will lead to an increase in the probability of wear and failure.

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