Resistance control VS IGBT control of mine electric locomotives

 

 

Resistance and IGBT control are two common speed control methods used in non-coal mine electric locomotives. The main differences of them are working methods, mechanical wear, energy-saving effects, maintenance costs, etc. Details are as follows:

 

1) Working mode: Resistance is a mechanical speed control method, which controls the speed of the vehicle by changing the resistance value (gear speed control). It has the characteristics of long life, but the maintenance rate is high because the contacts are easy to burn out; while the IGBT uses the module to control the speed (step-less speed regulation), built-in electronic horn and control switches for front and rear light, energy-saving and power-saving, easy to operate, long service life;

 

2) Mechanical wear: When the electric locomotive uses resistance, there are many wear points, such as the controller, brake shoes, motor and gearbox,  bearings, and other accessories. Frequent replacements and large losses; When using IGBT, because its starting and shutting down adopts modular technology, the electric locomotive starts smoothly and the speed is evenly adjusted, which effectively protects the motor and the mechanical transmission system of the locomotive;

 

3) Energy-saving effect: Resistance consumes a lot of power; IGBT saves about 30% of energy than traditional electric locomotives;

 

4) Maintenance cost: The maintenance cost of resistance is more than 8% of the cost of the electric locomotive; while the maintenance frequency of IGBT is significantly reduced, saving labor costs and improving the efficiency of electric locomotives

 

 

The above is a detailed introduction about the difference between resistance and IGBT for mine electric locomotives.