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A cooling method for internal cooling and external cooling of rotor magnetic poles

A technology of rotor magnetic pole and cold partition, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, etc., can solve the problem of unsatisfactory cooling effect, etc., to improve cooling effect, reduce ventilation resistance, and improve efficiency. Effect

Active Publication Date: 2015-11-25
STATE GRID XINYUAN +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this cooling method, the surface of the magnetic pole coil that participates in heat exchange is only a small part between the poles along the thickness direction of the magnetic pole current-carrying bar, and the cooling effect is not ideal.

Method used

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  • A cooling method for internal cooling and external cooling of rotor magnetic poles
  • A cooling method for internal cooling and external cooling of rotor magnetic poles
  • A cooling method for internal cooling and external cooling of rotor magnetic poles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for sub-regional cooling between internal cooling and external cooling of rotor magnetic poles. The cooling gas flows into the channel between the two magnetic pole coils 1 through the ventilation partition device 6 on the air inlet end of the two magnetic pole coils 1 to form an external cooling ventilation air path, and The outside of the pole coil 1 is cooled, and at the same time the cooling gas flows into the inside of the pole coil 1 through the gap between the pole core 2 and the pole coil 1, forming an internal cooling ventilation air path, and cooling the inside of the pole coil 1, and then from the pole coil 1 internally flows into the channel between the two magnetic pole coils 1, and the ventilation partition device 6 separates the external cooling ventilation air path and the internal cooling ventilation air path flowing into the channel from each other.

[0032] This embodiment is the most basic implementation mode. Using this method, the cooling g...

Embodiment 2

[0034] A method for sub-regional cooling between internal cooling and external cooling of rotor magnetic poles. The cooling gas flows into the channel between the two magnetic pole coils 1 through the ventilation partition device 6 on the air inlet end of the two magnetic pole coils 1 to form an external cooling ventilation air path, and The outside of the pole coil 1 is cooled, and at the same time the cooling gas flows into the inside of the pole coil 1 through the gap between the pole core 2 and the pole coil 1, forming an internal cooling ventilation air path, and cooling the inside of the pole coil 1, and then from the pole coil 1 internally flows into the channel between the two magnetic pole coils 1, and the ventilation partition device 6 separates the external cooling ventilation air path and the internal cooling ventilation air path flowing into the channel from each other.

[0035]The magnetic pole coil 1 is formed by stacking multi-layer current-carrying bars 4, and ...

Embodiment 3

[0038] A method for sub-regional cooling between internal cooling and external cooling of rotor magnetic poles. The cooling gas flows into the channel between the two magnetic pole coils 1 through the ventilation partition device 6 on the air inlet end of the two magnetic pole coils 1 to form an external cooling ventilation air path, and The outside of the pole coil 1 is cooled, and at the same time the cooling gas flows into the inside of the pole coil 1 through the gap between the pole core 2 and the pole coil 1, forming an internal cooling ventilation air path, and cooling the inside of the pole coil 1, and then from the pole coil 1 internally flows into the channel between the two magnetic pole coils 1, and the ventilation partition device 6 separates the external cooling ventilation air path and the internal cooling ventilation air path flowing into the channel from each other.

[0039] The magnetic pole coil 1 is formed by stacking multi-layer current-carrying bars 4, and...

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Abstract

The invention discloses a method for district cooling of internal cooling and external cooling of a rotor magnetic pole. A cooling gas flows into a channel between two magnetic pole coils through a ventilating partitioning device on air inlet ends of the two magnetic pole coils to form an external cooling ventilating air path for cooling the external part of the magnetic pole coils, flows into the interiors of the magnetic pole coils through a gap between magnetic pole iron cores and magnetic pole coils to form an internal cooling ventilating air path for cooling the interiors of the magnetic pole coils, and finally flows into the channels between the two magnetic pole coils from the interiors of the magnetic pole coils, so that the ventilating partitioning device is used for mutually separating the external cooling ventilating path from the internal cooling ventilating path which flow in the channel. According to the method, through simultaneously performing internal cooling and external cooling on the magnetic pole coils, and separating the internal cooling ventilating air path and the external cooling ventilating air path in the channel between the two magnetic pole coils, the internal cooling ventilating air path and the external cooling ventilating air path are in mutual noninterference, the cooling gas ventilating inside smoothly flows in the channel between the two magnetic pole coils, and thus the cooling effect of the whole magnetic pole is improved.

Description

technical field [0001] The invention relates to the technical field of motor cooling, in particular to a method for sub-regional cooling of rotor magnetic poles with internal cooling and external cooling. Background technique [0002] The capacity of each pole of the salient pole motor is usually below 10MVA, and some can reach 15MVA. With the changes in market demand and the development of related technologies, the capacity per pole of salient pole motor poles continues to rise, and the capacity per pole is expected to reach 30-40MVA / pole. As the capacity of each pole increases, the difficulty of designing the magnetic poles increases. If the magnetic pole coil with the same number of turns and weight is used, the current density of the coil will become higher and higher, and the heating of the magnetic pole coil will become more and more serious; however, if the magnetic pole coil is reduced by increasing the number of turns and weight of the magnetic pole coil If the cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/32
Inventor 郑小康邹应冬钱昌燕廖毅刚张天鹏钱生坤鄢帮国黄智欣骆林杜国斌蒋富强
Owner STATE GRID XINYUAN
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