Cooling system for improving water cooling effect of fan motor and cooling method thereof

Abstract

The invention belongs to the technical field of wind power generation, and discloses a cooling system for improving the water cooling effect of a fan motor and a cooling method thereof.The cooling system comprises a cooling water channel, a water inlet, a water outlet and a guide plate, wherein the cooling water channel is arranged in a shell of the fan motor; the water inlet is arranged at the inlet end of the cooling water channel; the water outlet is arranged at the outlet end of the cooling water channel; and the guide plate is arranged in the cooling water channel. According to the cooling system for improving the water cooling effect of the fan motor and the cooling method of the cooling system, the problems that a traditional cooling structure is uneven in flow velocity distribution and large in resistance are solved, meanwhile, the problem that the axial temperature difference is large due to the fact that the water inlet and the water outlet are formed in the two ends of the motor is solved, and the running stability of the motor is effectively improved. And meanwhile, the system size with the optimal cooling effect is designed by analyzing and calculating the temperature field of the motor, and the structure of the flow guide plate is added, so that the cooling water flows more uniformly and is in full contact with the motor shell, and the cooling effect is further improved.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a cooling system and a cooling method for improving the water cooling effect of a fan motor. Background technique [0002] The motor is an important structure in the wind power generator. The motors commonly used in wind power generation include double-fed induction motors and direct-drive permanent magnet motors. Among them, for the direct-drive permanent magnet motor, the permanent magnet on the rotor replaces the excitation winding, so there is a problem that the permanent magnet may be permanently demagnetized at high temperature, which poses high demands on the heat dissipation and cooling system of the motor. requirements. [0003] The more commonly used water-cooling structures at this stage include Z-shaped axial cooling water channel structure and circumferential spiral cooling water channel structure, although they can basically meet the cooli...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a cooling system and a cooling method for improving the water cooling effect of the fan motor, so as to solve the problems of uneven cooling temperature and poor cooling effect in the prior art

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