Home > Knowledge > Content
Braking resistor super high braking effect
Mar 30, 2018

Braking resistor super high braking effect


Braking resistor English Rheostatic brake, is a kind of braking method mainly used in the motor and transmission of the diesel engine, driven by the wheel to rotate the motor rotor and generate electricity, thereby generating a reverse torque, the kinetic energy of the train to achieve a braking effect Purpose, component ceramic tube is the skeleton of the alloy resistance wire, at the same time with the efficacy of the radiator; alloy resistance wire wavy shape, wrapped around the surface of the ceramic tube, is responsible for the motor's renewable electrical energy into heat; coating applied to the alloy resistance The surface of the wire has the characteristics of high temperature resistance and the function is flame retardant. Therefore, the efficiency of the tread braking is inversely proportional to the speed of the locomotive; while the resistance braking is the opposite, the higher the speed is, the more obvious the braking effect is.


In actual use of the braking resistor, the braking resistor power can be selected according to the above formula, and the braking resistor can be used to calculate the usage rate of the braking resistor according to the resistance and power of the selected braking resistor, thereby correct setting and avoiding the system. The dynamic resistance is overheated and damaged. It affects the braking effect of the brake unit. The lower the usage rate of the braking resistor is, the smaller the degree of heat generation of the resistor is, and the less energy is consumed in the resistor, the worse the braking effect is. At the same time, the capacity of the brake unit has not been fully utilized. Theoretically speaking, when the brake resistor usage rate is 100%, the use of the braking unit capacity is the most abundant, and the braking effect is also most obvious. However, this requires the cost of a large braking resistor power, and the user should comprehensively consider it.


The braking resistor is mainly used in the mechanical system where the inverter motor stops quickly. It is a kind of ripple resistance and converts the electrical energy generated by the motor into heat energy. Its general structure is the skeleton of the alloy resistance wire. The braking resistor has a wavy shape and is wound on the surface of the ceramic tube. It directly converts the regenerative electric energy in the rapid braking process of the motor into heat energy so that the regenerated energy is not fed back to the power source. In the electric network, it will not cause the voltage fluctuation of the grid, thus playing the role of ensuring the smooth operation of the power network.