Heat dissipation device of frequency converter of wind turbine generator
A technology for heat dissipation device and wind turbine, which is applied in output power conversion device, wind energy power generation, cooling/ventilation/heating transformation and other directions, which can solve the problems of unfavorable heat dissipation of gearboxes and frequency converters, insufficient power generation of fans, and declining economic benefits. , to achieve the effect of efficient heat transfer, effective and rapid heat dissipation, and increased heat transfer
Pending Publication Date: 2020-10-02
SOUTHEAST UNIV +1
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Problems solved by technology
[0003] However, when wind turbines are running on site, there are often high-temperature alarms from gearboxes and frequency converters due to unfavorable heat dissipation, which poses safety hazards. High-temperature alarms force wind turbines to operate at reduced power, resulting in insufficient power generation of wind turbines and a decline in economic benefits.
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[0018] Below in conjunction with accompanying drawing, the present invention will be further described:
[0019] like figure 1 As shown, the heat dissipation device of the frequency converter of a wind turbine according to the present invention includes a cold plate, a liquid reservoir 2 and a condenser 3 . The cold plate is arranged in the frequency converter of the wind turbine, and the cold plate is specifically an evaporator 1 capable of efficiently absorbing heat. The cooling fluid absorbs the heat in the inverter of the wind turbine in the split-sink multistage channel of the evaporator 1 and undergoes a phase change. The cooling fluid evaporates into a gas and flows out of the evaporator 1 to complete the transfer of heat; The cooling gas flows to the condenser 3, and the condenser 3 adopts the air cooling mode, and the valve 33 is opened, so that the outdoor air can freely enter the condenser 3 through the air supply line 32, and the outdoor cold air passes through th...
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The invention discloses a heat dissipation device of a frequency converter of a wind turbine generator. The heat dissipation device comprises an evaporator, a liquid storage device and a condenser, the evaporator is arranged in the frequency converter of the wind turbine generator, and the evaporator, the liquid storage device and the condenser are sequentially connected to form a cooling circulation loop. The heat dissipation device is characterized in that a branching-converging multistage flow channel is arranged in the evaporator and comprises a main flow channel, a first-stage flow channel, a second-stage flow channel and a converging flow channel, the first-stage flow channel is located at the branch and the tail end of the main flow channel, the second-stage flow channel is arrangedat the tail end of the first-stage flow channel, and the converging flow channel is located at the tail end of the second-stage flow channel. According to the heat dissipation device of the frequencyconverter, the efficient heat dissipation of the frequency converter of the wind turbine generator can be achieved, the heat exchange efficiency is high, the generated heat is rapidly dissipated intothe environment, and the economic benefits of the wind turbine generator are increased.
Description
technical field [0001] The invention relates to a cooling device for a frequency converter of a wind turbine, in particular to a device for absorbing heat from a frequency converter of a wind turbine based on a split-sink multistage channel evaporator. Background technique [0002] my country's energy distribution is characterized by rich coal, poor oil and little gas, and the geographical distribution is uneven. With the continuous consumption of fossil energy and the increasing pollution, my country is currently undergoing energy transformation. Renewable and low-pollution new energy sources are gradually replacing traditional fossil energy sources. Various new energy generation methods such as wind power, hydropower, and nuclear power have gradually increased the proportion of my country's power generation. Among them, wind power is more and more popular because of its good environmental benefits, renewable wind resources, flexible installation scale, and short infrastru...
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Patent Timeline
Login to View More IPC IPC(8): H05K7/20H02M1/00
CPCH05K7/20936H05K7/20327H05K7/20309H02M1/00Y02E10/76
Inventor 赵陶程樊成成夏玉娟陈靖予张程宾
Owner SOUTHEAST UNIV