A new type of thyristor speed regulating device applied to the DC line electric locomotives of chemical mines was successfully developed and put on the market in Hebei Hengshui Taichang Mine Electronic Equipment Factory. This product has filled a gap in China's mining machinery and electronics.
At present, most of the DC speed control devices for mine-used DC framed-line electric locomotives use resistance-based speed-regulating controllers, which cause many problems in production due to high energy consumption and unsteady startup. For this reason, the plant relied on scientific and technological innovation to successfully develop a new type of thyristor speed control device for DC electric locomotives for mines. It adopts a thyristor pulse speed control circuit and has a simple circuit, reliable operation, large speed range, start-up and adjustment. Speed ​​stable, energy-saving and explosion-proof features, can be adapted to -20 °C ~ 40 °C surrounding medium temperature and 80k ~ 110kPa ambient pressure, with good adaptability and adjustable range.
According to reports, this product adopts thyristor speed control technology to make the locomotive start smoothly, uniform speed, and strong overload capacity. Compared with the resistance type speed control device, it saves 25% of electric energy, only one 8-ton DC stage Line motor vehicles can save 10,000 yuan a year, and the failure rate in use is extremely low. In addition, the main circuit of the device has a strong shutdown capability without any loss of control, which increases the safety production factor of the motor vehicle.