Method and device for controlling braking resistor fan
A braking resistor and fan technology, which is applied in the direction of the DC motor's deceleration device, pump control, machine/engine, etc., can solve the problems of high fan noise and low energy saving, and achieve the effect of low noise and high-speed heat dissipation
Active Publication Date: 2016-06-01
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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[0067] The braking resistor fan in the prior art is a single-stage fan and can only run in high-speed mode. Therefore, when the train brakes, the brake resistor fan always runs in high-speed mode, which not only does not save energy, but also generates relatively large noise when the fan runs at high speed.
[0068] However, in the embodiment of the present invention, a braking resistor fan control method and device for trains are provided, which can achieve energy saving and noise reduction while cooling the braking resistor.
[0069] In order to make the above objects, features and advantages of the present invention more comprehensible, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0070] see figure 1 , the present invention provides a first embodiment of a braking resistor fan control method for trains. In this embodiment, when the contactor group is placed in the first position, the connection...
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The invention provides a brake resistor fan control method and device for trains. When a contactor set is placed at a first position, the connecting mode of a fan and a power source is a low-speed connecting mode. When the contactor set is placed at a second position, the connecting mode of the fan and the power source is a high-speed connecting mode. The contactor set is placed at the first position. The brake resistor fan control method comprises the steps that when the fact that a brake resistor is used is detected, the contactor set is placed at the second position and a timer is started; when the timer reaches a first preset time, the contactor set is placed at the first position. Therefore, switching of the high-speed mode of the fan and the lower-speed mode of the fan is realized according to the use situation of the brake resistor and the timer and by arranging the contactor set. When the brake resistor is used, the fan is made to run in the high-speed mode for certain time, so that high-speed heat dissipation of the brake resistor is guaranteed. In the rest of time, the fan runs in the low-speed mode, so that the fan saves more energy and is smaller in noise compared with a fan which runs in the high-speed mode all the time in the prior art.
Description
technical field [0001] The invention relates to the field of motor control, in particular to a method and device for controlling a braking resistor fan. Background technique [0002] During the braking process of the train, most of the energy generated is fed back to the grid system in the form of regeneration, but when a part of the energy cannot be absorbed by the grid system, it will be put into the braking resistor, so that this part of energy will be consumed by the braking resistor . When the braking resistor consumes this energy, it will generate a lot of heat. In this case, the braking resistor fan needs to run at high speed to achieve the purpose of rapid heat dissipation. [0003] At present, the braking resistor fan in the prior art is a single-stage fan, which can only run in high-speed mode. Therefore, when the train brakes, the brake resistor fan always runs in high-speed mode, which not only does not save energy, but also generates relatively large noise whe...
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IPC IPC(8): H02P3/12F04D27/00
Inventor 邹翔杨颖刘厚林周利黄志华曹增明
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD