infinitely variable-speed 无级调速，广调速 variable- frequency variable-speed 变频变速 variable-speed AC-excitation induction generator 变速交流励磁感应发电机 ..
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variable frequency variable speed system 变频调速系统
variable frequency variable-speed system 变频调速系统
variable-frequency variable-speed operation 变频调速运行
explosion-proof variable frequency variable speed 防爆变频调速
variable-frequency and variable-speed motor 变频调速电机
variable-frequency and variable-speed 变频调速电机
variable-frequency and variable-voltage speed regulation 变频变压调速
Variable-speed variable-frequency(VSVF), a new typed operational mode for the induction generator based wind power generation system is proposed based on the fractional frequency power transmission.
在分析异步风力发电系统模型的基础上，结合分频输电技术，提出了一种新型的异步风力发电系统运行方式——变速变频（VSVF）方式。
Variable frequency and variable speed motor system is of high intelligence, high reliability, fault-tolerant capability.
变频调速电动机系统具有高智能、高可靠性和高容错能力。
Combined with the variable frequency transformation of the induced fan in my company, the variable frequency speed regulation technology is ripe, and the electricity-saving effect is significant.
结合我公司引风机的变频改造，认为变频调速技术已经成熟，节电效果显著，在其他转机上可以应用。
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