Locomotive converter chopping resistor heat dissipation device
A technology of chopper resistance and heat dissipation device, which is applied to the modification of electrical components, power electronics, and structural components of electrical equipment, etc., can solve the problems of difficult operation, unfavorable resistance heat dissipation, slow hot air circulation, etc., and achieves easy installation, The effect of improving serviceability and solving heat dissipation problems
Inactive Publication Date: 2019-04-23
CRRC YONGJI ELECTRIC CO LTD
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Problems solved by technology
The above-mentioned heat dissipation design of the chopper resistor has the following disadvantages: (1) The surrounding design of the chopper resistor box is sealed, and the hot air circulates slowly, which is not conducive to the heat dissipation of the resistor; (2) It is not easy to operate during the maintenance of the chopper resistor
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[0019] The chopper resistance cooling device designed by the present invention includes a fan assembly frame, a fan assembly 1, and a heat dissipation and air-introduction plate 2, and the structure is as follows: figure 1 , figure 2 , image 3 shown.
[0020] figure 1 In the schematic diagram of the structure of the chopper resistor cooling device, the chopper resistor 5 is fixedly installed in the chopper resistor box of the converter cabinet, the front, rear and left side of the chopper resistor box are designed with sealing baffles, and the right side of the chopper resistor box is designed with ventilation holes. Compared with the original sealed design, one of the advantages is that it is conducive to the repair and maintenance of the chopper resistor, and on the other hand, it can quickly and effectively ventilate and dissipate heat. figure 2 In the schematic diagram of the structure of the chopper resistor cooling device, the ventilation and cooling fan assembly 1...
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The invention relates to heat dissipation of locomotive converter chopping resistors, in particular to a locomotive converter chopping resistor heat dissipation device. According to the locomotive converter chopping resistor heat dissipation device, a fan assembly frame is arranged on the portion, on the right side of a chopping resistor box, in a converter cabinet, a set of fan assemblies is fixed to the fan assembly frame, an air inducing board fixed to the converter cabinet is arranged above the fan assembly, an air hole is formed in a right side baffle of the chopping resistor box, the airinducing board is obliquely arranged, cooling air is sucked below the fan assemblies, the cooling air enters the chopping resistor box through the air hole after the direction of the cooling fan is changed by the air inducing board, and the cooling air takes away heat released by the chopping resistor continuously by penetrating through a heat dissipation filter screen, so that heat dissipation of the chopping resistor is achieved. The heat dissipation device is compact and ingenious in structural design and convenient to install, has good ventilation and heat dissipation effects, and meets the requirements of fast heat dissipation of the converter chopping resistor.
Description
technical field [0001] The invention relates to the heat dissipation of the chopper resistance of the locomotive converter, in particular to a heat dissipation device for the chopper resistance of the locomotive converter. Background technique [0002] The traction converter is the core component of the rail transit electric drive system, and its safe and reliable operation is the guarantee for the safe, reliable and stable operation of the entire vehicle system. The high-power locomotive traction converter (referred to as the converter) is mainly composed of a rectifier, an intermediate DC link and an inverter. The chopper circuit belongs to the intermediate DC link of the converter. Inhibition and system protection, when the DC bus voltage rises to the chopper protection threshold, the traction control unit (TCU) controls the chopper circuit to work to suppress the DC bus overvoltage, and at the same time, the chopper resistor will instantly release a large amount of heat ...
Claims
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Login to View More IPC IPC(8): H05K7/20
CPCH05K7/20145H05K7/20909
Inventor 韩建宁张修同王彬金春羽马连凤孙晓丽
Owner CRRC YONGJI ELECTRIC CO LTD