VVVF是可变电压(Variable Voltage)可变频率(Variable Frequency)之简称, 推进系统使用此模式提供牵引马达所必须的转矩(电流)和转速(频率),
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基于DSP的石油井下测试仪的设计与实现[中国电子设计网] Key words: TMS320F2812;variable frequency;perforation [gap=117]关键词 TMS320F2812;变频 ;射孔
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... variable frequency 变频 variable frequency 变频可变频率 variable gain amplifier 可变增益放大器 ...
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...变频调速;特点 [gap=677]ords: South-to-North Water Transfer;Huinanzhuang pump station;water supply;pump;variable frequency;characteristics ...
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variable frequency speed regulation 变频调速
Variable Frequency Air-condition 变频空调
variable voltage variable frequency 变压变频 ; 变压变频调速
variable frequency speed control 变频调速
variable frequency generator [电子] 可变频率发生器 ; 变频发生器
Variable Voltage and Variable Frequency 变频技术
variable frequency regulating speed 变频调速
variable frequency generator control 可变频率发生器控制器
A new model of variable frequency experiment system, which adoptsAc asynchronous motor as analogue load, is presented in this thesis.
本文提出了一种以交流异步电机作为模拟负载的新型变频调速系统。
参考来源 - 频差控制节能型交流变频调速系统的研究In this system, the variable frequency motor is applied to meet the requirement of low speed to check the compositive error and high speed to measure the vibration.
针对检测综合误差和振动时对主轴转速的要求,采用变频电机来控制主轴转速,以满足系统对转速的要求。
参考来源 - 锥齿轮传动智能综合检测系统研究与开发·2,447,543篇论文数据,部分数据来源于NoteExpress
Digital variable frequency is a key technology of soft radio.
数字下变频技术是软件无线电中的关键技术之一。
The result shows that the mid-voltage variable frequency inverter can run safely and stably.
实验结果表明,该中压变频器能够安全、稳定地运行。
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。
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