A permanent magnet governor cooling system

Abstract

The invention particularly relates to a cooling system of a permanent magnet governor. A power supply and a processing unit of the system are connected with a semiconductor refrigeration module, the cooling end of the semiconductor refrigeration module is used for cooling the conductor rotor disk of the permanent magnet speed governor, the heating end of the semiconductor refrigeration module is used for the heat derivation generated by the semiconductor refrigeration module, the first temperature sensor and the second temperature sensor are capable of transmitting the temperature informationof the eddy current side of the conductor rotor disk of the permanent magnet speed governor and the temperature information of the heating end of the semiconductor refrigeration module to the processing unit, the detection processor of the processing unit receives and processes the temperature information to obtain the real-time temperature of the vortex side of the conductor rotor disk of the permanent magnet speed governor and the real-time temperature of the heating end of the semiconductor refrigeration module, The controller compares the above temperature with a preset suitable temperature, and controls the refrigeration capacity of the refrigeration end of the semiconductor refrigeration module and the heat generation amount of the heating end of the semiconductor refrigeration module. The invention relates to an active cooling method.

Description

technical field [0001] The invention belongs to the technical field of speed adjustment cooling, and in particular relates to a cooling system for a permanent magnet governor. Background technique [0002] The permanent magnet speed governor adopts the magnetic field non-contact transmission mode, which has many advantages such as high reliability, strong adaptability, good vibration isolation effect, long service life, soft start and overload protection, and is widely used in high-power fans and pumps. transmission. [0003] Generally, the permanent magnet governor drives the conductor rotor to rotate through the motor, and the conductor rotor cuts the magnetic field of the permanent magnet rotor to generate an induced current, thereby generating electromagnetic force to drive the permanent magnet rotor to rotate. When the permanent magnet governor is in continuous operation, the induced current of the conductor rotor will generate a lot of heat. On the one hand, the heat ...

AI Technical Summary

Problems solved by technology

[0006] 1. Generally, liquid cooling and air cooling are passive heat dissipation, which are easily restricted by the ambient temperature and the working conditions of the permanent magnet governor, and cannot adjust the heat dissipation capacity according to the heat generation of the conductor rotor;

[0007] 2. The liquid-cooled heat dissipation method will cause the medium to contact the conductor rotor, which may cause corrosion of permanent magnet materials and other components, and reduce the insulation of the device;

[0008] 3. Liquid cooling requires the use of water pumps and radiators in order to ensure the cooling effect. In particular, high-power permanent magnet governors also need refrigeration devices to reduce the temperature of cooling water, which increases the space for equipment installation and use.

[0009] It can be seen that most of the cooling methods of the existing permanent magnet governor cannot actively adjust the heat dissipation capacity, and the liquid cooling method increases the complexity of the internal structure of the permanent magnet governor. In order to ensure the cooling effect, additional equipment is required, thereby increasing Larger equipment operating space

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