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1)  VVVF
恒压频比
1.
The traditional VVVF control schemes have the disadvantage of poor steady precision and the small output torque working in the low frequency ln this paper the scalar control scheme with the slip frequency compensation and the stator voltage dropping compensation is proposed,simulation and experiments validate the proposed scheme has good steady precision and high output torque.
传统的恒压频比控制存在稳态精度低、低频输出转矩小等缺点。
2)  constant U/f
恒压频比
1.
Then considers the induction motor and the inverter as a whole controlled object,which named as a variable frequency speed-regulating system in constant U/f.
本文讨论了水泵变频调速的节能原理,提出一种基于参数自调整模糊PID控制的交流闭环变频调速系统的设计方法,把变频器和感应电机组成的变频调速系统看成一个整体—恒压频比变频调速系统。
3)  constant voltage frequency ratio (U/f)
恒压频比(U/f)
4)  constant V/f control
恒压频比控制
1.
First,some control methods of induction motor are simply introduced, the basic principles of constant V/f control and vector control are analyzed emphatically; and their control structures are given out.
本文针对感应电机变频调速的问题,以dSPACE实时仿真系统和专用智能功率模块为控制系统的核心,实现了恒压频比控制和矢量控制。
5)  constatn frequeng and voltage
恒频恒压
6)  Constant voltage and frequency
恒压恒频
补充资料:恒压热容
分子式:
CAS号:

性质:在一定温度和压力下,体系(物系)温度每升高1℃所吸的热,称为该温度、压力下此体系的热容,用符号C表示。C值可正、可负,也可为零。一般情况下,升温过程不同,吸热数量不同,所以C值也不同。如果过程中体系维持压力一定,此时的热容为恒压热容,用Cp表示。若体系为1mol纯物质,就称摩尔恒压热容,单位是J/(K·mol)。

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