Vehicle-mounted converter thermal management system and method and vehicle-mounted converter

A thermal management system and converter technology, applied in cooling/ventilation/heating renovation, power electronics modification, electrical components, etc., can solve the problem of excessive cooling of the internal temperature of the converter, ensure the working characteristics, reduce the temperature , to avoid the effect of working temperature is too low or too high

Pending Publication Date: 2021-06-11
CRRC DALIAN R & D CO LTD
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Problems solved by technology

[0006] The object of the present invention is to provide a thermal management system and method for a vehicle-mounted converter and a vehicle-mounted converter to solve the problem of excessive cooling of the internal temperature of the converter in the prior art

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  • Vehicle-mounted converter thermal management system and method and vehicle-mounted converter
  • Vehicle-mounted converter thermal management system and method and vehicle-mounted converter
  • Vehicle-mounted converter thermal management system and method and vehicle-mounted converter

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Embodiment Construction

[0046] By way of the above drawings, specific embodiments of the invention have been shown and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept for those skilled in the art by referring to specific embodiments.

[0047]An embodiment of the present invention provides a thermal management system for a vehicle-mounted converter, which adopts the idea of ​​active thermal management, and creates a more comfortable working temperature environment for IGBT devices through a more reasonable water temperature control strategy and a more precise temperature sensor. Long-term work at the temperature of the radiator substrate is about 40°C, avoiding the long-term operation of the IGBT in a wide thermal cycle, thereby greatly improving the reliability of the on-board converter, and can also provide the performance of the IGBT device for the he...

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Abstract

The invention provides a vehicle-mounted converter thermal management system and method and a vehicle-mounted converter. A controller can determine the heat dissipating capacity required when the water-cooling radiator substrate is reduced to the proper working temperature by calculating the total heat generated by the IGBT device and the circulating heat dissipating capacity of the cooling liquid, and determines the power supply control signal according to the required heat dissipating capacity; the controller controls the variable-frequency power source according to the power source control signal and controls the rotating speed of the cooling fan through the variable-frequency power source. The rotating speed of the cooling fan is controlled according to the heat dissipating capacity required by the IGBT device, so that the temperature of the water-cooling radiator substrate can be more accurately and effectively controlled, the situation that the working temperature of the IGBT device is too low or too high due to overcooling or poor cooling effect is avoided, and the working characteristics of the IGBT and the working reliability of the vehicle-mounted converter are guaranteed.

Description

technical field [0001] The invention relates to the technical field of railway locomotives and EMUs, in particular to a thermal management system and method for a vehicle-mounted converter and the vehicle-mounted converter. Background technique [0002] The on-board converter is one of the most critical equipment for railway locomotives and EMUs. It is the power source for train traction and operation. Its reliability plays a decisive role in the safe and punctual operation of trains. How the on-board converter can better adapt to the huge temperature range in our country, the technical level of its cooling system plays an extremely important and decisive role. [0003] At present, the on-board converters of locomotives and EMUs in my country still use simple temperature-controlled water-cooled heat dissipation systems. Insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT) are generally used as high-power power electronic devices in on-board converters...

Claims

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Application Information

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IPC IPC(8): H05K7/20
CPCH05K7/20863H05K7/20872H05K7/20909H05K7/20927
Inventor 车向中郭启亮
Owner CRRC DALIAN R & D CO LTD
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