变频驱动系统（VFD）由电机、变频器、传感器及PLC控制系统组成
工作原理：变频器根据主机实时负荷动态调节泵的流量，将主机进气冷却温度维持在36摄氏度。
The variable frequency drive system (VFD)consists of motors,frequency converters,sensors and PLC control systems
Working principle:The frequency converter dynamically adjusts the pump flow rate according to the real-time load of the main engine,keeping the cooling temperature of main engine intake air steadily at 36 degrees Celsius.
