In-stator slot water cooling system and motor with same

Abstract

The present invention discloses an in-stator slot water cooling system. The system comprises an inner water cooling circulation subsystem and an outer water cooling circulation subsystem; the inner water cooling circulation subsystem comprises water pipes (11) arranged at stator slot bottoms and stator slot openings; the water pipes (11) are communicated with rubber hoses (19) through sealing joints (18); the rubber hoses (19) are communicated with end ring (6 and 7) through sealing joints (18); an inlet (26) is arranged at the outer side of the end rings (6 and 7); an outlet (27) is arranged at the inner side of the end rings (6 and 7); cooling water can enter the water pipes (11) through the inlet (26) to take away the heat of a stator and windings in stator slots and is discharged through the outlet (27); and the outer water cooling circulation subsystem includes a water heat exchanger (3) used for cooling water discharged from the outlet (27). The invention also discloses a motor with the water cooling system. The water cooling system of the invention has high cooling efficiency and can assist in solving the problems of fast temperature rise of the windings of a high-power density double-stator motor and difficult cooling of the rotor of the motor.

Description

technical field [0001] The invention belongs to the technical field of motor cooling, and in particular relates to a water cooling system in a stator slot and a motor with the water cooling system. Background technique [0002] Due to its high efficiency, high reliability and simple structure, large-scale high-power-density permanent magnet motors have gradually replaced traditional synchronous motors and induction motors in the past ten years and have been widely used, and are widely used in wind turbines and ship propulsion. There is a huge market demand. Due to the strict restrictions on its size in its application, in order to increase the output per unit volume of the motor, the motor often has a large electromagnetic heat load. This high power density design will increase the heat production per unit volume of the motor during operation, which will increase the temperature rise of key parts such as motor windings and magnetic steel, threatening the safe and stable ope...

AI Technical Summary

Problems solved by technology

This solution has high cooling efficiency and can directly take away the heat generated by the motor winding. In addition, the arrangement of the notch water pipe reduces the AC copper loss of the winding, and the cooling medium in the pipe is close to the rotor, which can cool the rotor to a certain extent. , which solves the problems of difficult cooling and high temperature rise of the rotor of high power density dual stator motors

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