The system is designed as circulation absent and A-A VF controlled one, in which a responsive motor driving the main ventilation fan is controlled in a vector control technology without speed sensor.
系统采用无环流交-交变频控制方案、应用无速度传感器的矢量控制技术对拖动煤矿主扇风机的感应电动机进行控制。
September 2009, coal companies Tangkou main fan was modified to further improve the ventilation system, ventilation, safe and reliable operation of equipment.
2009年9月，唐口煤业公司对主通风机进行了改造，矿井通风系统进一步完善，通风设备运行更加安全可靠。
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