Why the coal mining battery locomotive do not use the resistance controller?mining explosion-proof battery locomotive
Because the resistance speed control is through frequent contact of the contact group to adjust the speed and change direction, this structure is prone to sparks, and the contacts are often replaced, which is very inconvenient in practical application.
The better IGBT controller (chopping wave speed regulation) is the main application of explosion-proof battery electric locomotives used in coal mines. It is characterized by eliminating commutation noise, stable vehicle acceleration, easy installation, small size, and step-less speed regulation.
There is a better frequency conversion speed regulation, which is also step-less speed regulation, but the price is higher.
Therefore, the mining battery electric locomotive used in coal mines is better to use chopper speed regulation, and the place with huge humidity can also adopt this explosion-proof IGBT controller.
