Three-phase core-type axial rotary converter for wireless energy transmission

Abstract

The invention relates to a three-phase core-type axial rotary converter for wireless energy transmission. The three-phase core-type axial rotary converter comprises a stator core and a rotor core, wherein the stator core and the rotor core adopt two coaxial and opposite cores, an interval serving as an air gap is formed between the stator core and the rotor core, a direction of the air gap between the stator core and the rotor core is coaxial with a motor rotating shaft, wire outgoing grooves are formed in the stator core and the rotor core, 6 three-phase stator coils are wound in the wire outgoing groove of the stator core, 6 three-phase rotor coils are wound on the rotor core, the stator coils and the rotor coils are in coaxial correspondence, the interior of the stator core is divided into 5 core columns by means of the 6 stator coils, and the interior of the rotor core is divided into 5 core columns by means of the 6 rotor coils. The rotary converter provided by the invention can effectively replace an electric brush structure without affecting the overall structure size of the motor, and can be maintained together with the motor body.

Description

technical field [0001] The invention belongs to the field of three-phase power generation equipment and relates to wireless energy transmission technology, in particular to an axial rotary converter for three-phase iron core type wireless energy transmission. Background technique [0002] It is known that the rotary converter (different from the existing rotary transformer concept) applied to the motor can replace the brushes and slip rings, which can greatly improve the reliability, and does not need to replace the brushes, and can be free from maintenance. With the deepening of research, especially the application of electromagnetic simulation technology, there are still many problems in the current rotary converter that have not been properly resolved. For example, when the working magnetic flux passes through the air gap between the stator and rotor of the rotary converter, the edge effect is caused by the scattering of the magnetic flux. It will enter the steel sheet v...

AI Technical Summary

Problems solved by technology

Also, when the rotary converter is working under load, if the leakage magnetic flux caused by the working current of the stator and rotor coils is not well absorbed, and enters the steel sheet vertically, it will also cause a large stray loss and reduce the transmission efficiency. Especially problematic when transmitting high power

[0003] On the other hand, when a high-power motor uses a brush device to work, workers need to regularly inspect the sparks generated by the brushes every day to evaluate the danger level of the sparks. If the sparks are serious, they will fail and shut down for maintenance

Even if the cremation is within the normal range, due to the rotation and wear, the dust will be polluted by flying powder, and it needs to be replaced regularly (a few days to a few months) with power on or a new one of the same type of brush when the power is cut off. In short, the maintenance workload is large.

[0004] For the rotary converter applied to the motor, if three-phase power supply is used, it is generally assembled by three independent three-phase rotary converter units. The three phases work independently of each other, and the magnetic circuits of the three three-phase rotary converters are independent. The converter is large in size and heavy in weight, and the three three-phase rotary converters are separated, the installation and fixing are complicated, the overall stability is poor during rotation, and the assembly accuracy is high.

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