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Working temperature control device for high-power power electronic device

A technology of power electronic devices and working temperature, applied in temperature control, non-electric variable control, control/regulation system, etc., can solve the problems of large energy consumption, long warm-up time, uneven warm-up, etc., and achieve heat transfer efficiency High temperature, short warm-up time and low energy consumption

Inactive Publication Date: 2010-03-10
CRRC DALIAN CO LTD
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  • Abstract
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Problems solved by technology

For the IGBT module in the converter cabinet, the existing technology is to preheat the IGBT module through an electric heater or a tubular resistor. Due to the large assembly volume and large heat capacity of the IGBT module and the radiator, this preheating method takes a long time to warm up and consumes a lot of energy. Large, uneven preheating, high requirements on the thermal insulation effect of the surrounding environment, often can not achieve a good preheating effect

Method used

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  • Working temperature control device for high-power power electronic device

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Embodiment Construction

[0009] Referring to the accompanying drawings, the embodiments of the present invention will be described in detail. The operating temperature control device for high-power power electronic devices in the embodiment of the present invention mainly includes a device cooling plate, a water circulation pump, a radiator, a water supply tank, various valves, instruments and detection elements, external piping, etc., and is heated through a two-position three-way solenoid valve. Enter the loop. The temperature sensor of the controller is set at the cooling liquid outlet of the cooling plate of the IGBT device, and the output end is connected to the two-position three-way solenoid valve. When the device is working, the temperature sensor detects the temperature of the coolant at the outlet of the cooling plate of the device. If it is lower than the minimum working environment temperature limit value, the controller will control the circulation circuit to switch to the heater through ...

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Abstract

The invention relates to a working temperature control device for a high-power power electronic device, consisting of a circulated water cooling device. A heater is arranged in the circulation loop, a2-position 3-way electromagnetic valve controls the switching between the heater and the radiator, a temperature sensor of the controller is arranged at a water outlet of the water cooling plate of the power electronic device, and the output end of the controller is connected with the 2-position 3-way electromagnetic valve. The working temperature control device has the advantages of high heat transfer efficiency, even pre-heating, short pre-heating time, high efficiency and reduced energy consumption.

Description

technical field [0001] The invention belongs to the technical field of application of power electronic devices, and in particular relates to a device for controlling the working temperature of high-power power electronic devices. Background technique [0002] Generally, the working environment temperature of the converter using IGBT is -25°C ~ +70°C, and it can be stored normally at -25°C ~ -40°C. After taking heating and cold protection measures, it can work normally below -25°C. The lowest working environment temperature of some converters is limited to -10°C or 0°C. Under low temperature conditions below 0°C, the static characteristics of VCE(sat) in the small current range are shown in the figure. The lower the temperature and the lower the current, the larger the value of VCE. VCE is the feedback signal to detect IGBT short circuit. For example, two IGBT modules located on the same bridge arm, when one of the IGBTs is mistriggered or destroyed, triggering the other IG...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/20
Inventor 蔡志伟
Owner CRRC DALIAN CO LTD
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