variable frequency speed control 变频调速
variable frequency speed control system 变频调速系统
Variable-speed constant-frequency Control System 变速恒频控制系统
Variable Frequency Speed-control 变频调速
vector-variable-frequency speed control 矢量变频调速
variable-frequency stepless speed control 变频无级调速
variable-frequency speed control principle 变频调速原理
Based on the above study, the author of this paper designed variable frequency control speed system in electric twin-pod propulsion.
基于以上各部分，作者设计出双吊舱变频调速试验系统。
This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.
本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。
This paper discusses the slip frequency control of variable frequency regulating speed system, and analyses the shortage of this control way.
本丈对转差频率控制的变频调速系统进行讨论，分析这种控制方式所存在的不足；
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