How to choose the driver controller of the 2.5-ton mining electric locomotive?
The driver controller of the 2.5-ton mining electric locomotive is mainly used to control the speed regulation and commutation of the 2.5-ton mining electric locomotive. Therefore, it obviously corresponds to the speed regulation methods of 2.5-ton mining electric locomotives one-to-one - resistance speed regulation, IGBT chopper speed regulation and frequency conversion speed regulation. The first two speed control methods are common and affordable speed control methods, so this article mainly focuses on these two kinds of control.
The resistance speed regulation is to adjust the speed by changing the resistance, which belongs to the step-by-step speed regulation, and the whole control process is completed by the copper contact head.
IGBT chopper speed regulation is to control the power of the motor by controlling the current size through the IGBT module, and finally achieve the purpose of speed regulation. However, its method of controlling current is different from that of resistance speed regulation. It is to change the average value of motor voltage and current by adjusting the operating frequency of the switch or changing the time ratio of DC current on and off.
From the above two paragraphs, it can be seen that the copper contact head of the resistance controller is easily damaged and needs to be replaced frequently. The chopper speed regulation needs to be replaced with the IGBT module, whichever one has a problem, but there are certain requirements for the maintenance master.
