External ventilation device of wind power generating frequency converter reactor

Abstract

The invention relates to an external ventilation device of a wind power generating frequency converter reactor. The external ventilation device comprises a cabinet body and an iron core dry-type reactor, wherein the iron core dry-type reactor is fixedly installed at the bottom in the cabinet body. The external ventilation device is characterized in that the bottom of the iron core dry-type reactor is fixedly installed on symmetric supporting tables, the supporting tables are fixedly installed on the bottom face of the cabinet body, the upper portion of the bottom face in the cabinet body and the lower portion of the bottom face of the iron core dry-type reactor form a ventilation space, ventilating holes are formed in the bottom face of the cabinet body, and an exhaust fan is fixedly installed at the position, corresponding to the upper portion of the reactor, of the side face of the cabinet body. The external ventilation device is scientific and reasonable in structural design, ensures ventilation in the reactor and timely dissipation of heat produced internally and prolongs the service life of the reactor.

Description

technical field [0001] The invention relates to a frequency converter for wind power generation, in particular to an external ventilation device for a reactor of a frequency converter for wind power generation. Background technique [0002] The frequency converter is an essential and important component in the wind turbine. The frequency converter excites the rotor of the doubly-fed asynchronous wind power generator, so that the amplitude, frequency and phase of the output voltage of the stator side of the doubly-fed generator are the same as those of the grid, and independent decoupling control of active power and reactive power can be performed as required . The inverter controls the doubly-fed asynchronous wind generator to achieve soft grid connection, reducing the adverse impact of the grid connection impact current on the motor and the grid. [0003] The existing inverter is composed of main circuit system, power distribution system and control system. Including sta...

AI Technical Summary

Problems solved by technology

The heat generated by the existing reactor is discharged through this channel to ensure the heat dissipation of the reactor, but when the heat accumulation is large, due to the limitation of the channel space, it is difficult to dissipate the energy in a short time, which will cause the temperature of the reactor Too high, affecting the normal operation of the equipment

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