This paper describes the application of Variable Frequency Device in FCS. The hardware configurations and control strategy configurations of FC$ and the principle of VFD are introduced.
论文叙述了变频调速技术在现场总线控制系统中的应用。介绍了该FCS的硬件配置、控制策略组态方案和采用变频调速技术的节能原理。
The AC-DCAC voltage source inverter composes the main circuit of this variable frequency system and CPLD is the logic control device of the power device (IPM).
该变频调速系统主电路采用交-直-交形式，以(CPLD)作为调速系统逆变电路功率开关器件(IPM)的逻辑控制器件。
To the most potential variable-speed constant-frequency doubly fed induction generator, the device of power electronics converter used to control rotate speed is analyzed.
针对最具有发展潜力的变速恒频双馈风力发电系统，分析其用于转速控制的电力电子变换器装置。
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。
In this issue, a device of variable velocity variable frequency on medium-high voltage three-level is developed to reduce energy consumption and improve the cost-effective for the previous problems.
针对这些问题，本课题研究开发了一种中高压三电平变频调速装置，降低电机的能耗、提高系统的性价比。
The invention specifically relates to a device for generating hot water, boiling water and vapor by intermediate frequency and variable frequency induction heating metal pipes.
具体 是一种中频、变频感应加热金属管产生热水、开水、蒸汽的装置。
The invention specifically relates to a device for generating hot water, boiling water and vapor by intermediate frequency and variable frequency induction heating metal pipes.
具体 是一种中频、变频感应加热金属管产生热水、开水、蒸汽的装置。
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