The control system of multi-connected air-condition unit is the control unit which combines a variable frequency module, a variable frequency motor of compressor and a system of refrigeration.
多联空调机组控制系统是将变频模块、变频压缩机和制冷系统有机集成一体的控制单元，其技术核心是变频控制模块。
Applying variable frequency technique and automation control technique in intelligent oil pumping system improves the existing pumping unit.
应用变频调速技术、自动控制技术改造现有的游梁式抽油机，实现了抽油系统的智能化。
An integrating device of variable frequency and speed-down is an important driving and control unit which combines a variable frequency module, a variable frequency motor and a retarder.
变频减速一体机是将变频模块、变频电机和减速机有机集成一体的重要传动控制单元。
The principle of braking unit for Frequency-variable Speed-adjustable System was introduced, by analysing, a simple braking circuit of energy-consumed was designed.
阐述了变频调速系统中制动单元的工作原理，基于分析能耗制动工作方式的基础上，设计了一种简单的能耗制动电路。
The movement law and electric driving system are analyzed. Variable frequency technique used in the system is discussed and PLC is used for automatic control of the pumping unit.
分析了数控抽油机的运动规律及电力拖动系统，论述了变频调速技术在系统中的应用。应用可编程控制器(PLC)完成抽油系统的自动控制。
The electric control unit USES variable frequency step-less speed regulation for easy operation, operation panel is simple and clear.
本机的电气控制采用变频无级调速，操作方便、直观，操作面板简洁、明了。
The principle, the function and the character of variable frequency regulating velocity and application on typical chemical industry production unit was introduced.
介绍了变频调速的基本原理、功能、特点及其在化工生产典型装置中的应用情况。
Combining the variable frequency condensing pumps with the turbine driven feed water pumps can reduce the auxiliary power consumption and improve the unit efficiency.
将变频凝结泵与汽动给水泵联合使用，降低了厂用电，提高了机组效率。
It is difficult to design especially large variable frequency motor-driven centrifugal compressor unit in long distant pipeline.
特大型变频电机驱动离心式压缩机组的设计难度较大。
It is difficult to design especially large variable frequency motor-driven centrifugal compressor unit in long distant pipeline.
特大型变频电机驱动离心式压缩机组的设计难度较大。
应用推荐