Liquid cooling impact arch-shaped magnetic flux adjusting device

Abstract

The invention discloses a liquid cooling impact arch-shaped magnetic flux adjusting device, which comprises a magnetic flux adjusting mechanism, the magnetic flux adjusting mechanism is arranged on a slotted stator, the slotted stator is provided with a stator inner slot and a stator back slot which are mutually symmetrical and are provided with back-wound windings, and the magnetic flux adjusting mechanism comprises a magnetic flux modulation block and an arch-shaped elastic sheet; the magnetic flux modulation block is arranged in the stator back slot, the arch-shaped elastic sheet is arranged on the back of the magnetic flux modulation block, and the highest point on the back of the arched elastic sheet is in contact connection with the inner wall of the casing; and a first slotted channel is arranged between the outer side wall of the magnetic flux modulation block and the casing, a second slotted channel is arranged between the magnetic flux modulation block and the bottom of the stator back slot, and the two ends of the magnetic flux modulation block are both provided with inclined impact slopes capable of increasing the impact force of cooling liquid flowing into the second slotted channel. The magnetic flux modulation block slides or is fixed in the stator back groove under the combined action of the liquid pressure and the elastic force. According to the invention, heat dissipation can be effectively carried out on the motor, and continuous magnetic adjustment can be realized.

Description

technical field [0001] The invention relates to the field of motors, in particular to a liquid-cooled impact arch magnetic flux adjustment device. Background technique [0002] Back-wound windings are mainly used in the field of high-speed motors. High-speed permanent magnet generators have the advantages of simple structure, low loss, low vibration and noise, fast dynamic response, high power density, high transmission system efficiency and reliable operation. The key power equipment of the gas turbine distributed energy supply system meets the requirements of the miniaturization and integration of the micro gas turbine power generation system; the back-wound windings are respectively wrapped around the inner slot of the stator and the back slot of the stator, and the high-speed motor uses the back-wound winding The length of the winding end can be reduced, thereby reducing the axial length of the rotor to achieve the effect of enhancing the mechanical strength of the rotor...

AI Technical Summary

Problems solved by technology

[0002] Back-wound windings are mainly used in the field of high-speed motors. High-speed permanent magnet generators have the advantages of simple structure, low loss, low vibration and noise, fast dynamic response, high power density, high transmission system efficiency and reliable operation. The key power equipment of the gas turbine distributed energy supply system meets the requirements of the miniaturization and integration of the micro gas turbine power generation system; the back-wound windings are respectively wrapped around the inner slot of the stator and the back slot of the stator, and the high-speed motor uses the back-wound winding The length of the winding end can be reduced, thereby reducing the axial length of the rotor to achieve the effect of enhancing the mechanical strength of the rotor, but half of the back-wound winding is located at the back of the stator, resulting in low utilization of the back-wound winding and generating Back-wound winding magnetic flux leakage, the magnetic flux leakage will enter the casing, and induce eddy current on the surface of the casing, which will adversely affect the high-speed motor

[0003] Under the same power, the axial length of high-speed motors is much longer than that of ordinary motors, so the total length of back-wound windings on high-speed motors will be longer than that of ordinary motors. Longer winding lengths will increase the copper consumption of the motor and generate heat. increase, if the high-speed motor cannot be effectively dissipated, it will adversely affect the operation of the high-speed motor, and even affect the service life of the high-speed motor; and because the axial length of the high-speed motor is much longer than that of the ordinary motor, if the cooling If the other side flows out, the cooling effect of the second half of the motor will not be good, because the back-wound winding on the slotted stator is also longer than the back-wound winding on the ordinary motor, and the heat generated is more than that of the ordinary motor. When the coolant is halfway through, the coolant has absorbed heat and is saturated.

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