依据交流电机的控制策略，提出了适用于电动汽车交流电动机控制的变频变压调速和矢量控制两种控制的实现方法。
According to the control strategy of ac motors, the two control means put forward to be applicable to electric vehicle about VVVF and space vector.
在各种异步电机调速系统中，效率及性能最好的系统是变压变频调速系统。
The best system of efficiency and function are becoming the pressure frequency conversion velocity modulation system in the various asynchronous electrical machinery velocity modulation system.
介绍一种采用低压电压型变频器、正弦波滤波器和变频升压变压器构成的低-高式中压变频控制系统。
A kind of medium voltage AC variable frequency control system, which consists of voltage source inverter, sinuous filter and stepup transformer with variable frequency, is introduced.
数控机床的转速调整，目前越来越多地应用了变压变频技术来实现。
NC machine speed adjustment, and more and more application of the VVVF technology to achieve.
该方法利用回转器构成传输网络实现变压变频，使系统结构简化，且输出频率上限大幅度提高。
The system constitution is simplified by using gyrator transmission network to realize the live conversion of voltage and frequency, thus greatly enhancing the upper output frequency.
升压转换器，是常用的在变压器少变频器调节光伏阵列电压，为显示图。
Boost converter is commonly used in transformer-less inverters to regulate PV array voltage, as shown in Fig.
通过对控制信号的调整，系统可实现变压、变频、稳压、稳频的闭环控制。
By adjustment to control signal, systems might realize variable voltage, variable frequency, steady voltage, steady frequency closed loop control.
简要介绍了静止式变压变频器的主要类型和以及之相应的变频电机设计特点。
The type of quiescent VVVF inverter and design characteristic of inverter-fed motor is introduced.
针对电力变压器风冷系统存在的问题，设计了由变频器构成的节能装置。
Countered problems in the forced-air cooling system of power transformer, the energy-saving device composed by converter is designed.
介绍了一种基于16位单片机的变压变频VVVF系统。
基于矢量控制的变压变频调速在高速列车中得到广泛应用。
Variable voltage and variable frequency system based on vector control is applied widely in high speed train.
频率逆变器具有变压、变频功能。
The frequency inverters has a function of variable voltage and variable frequency.
利用变频方法，以中频变压器取代低频变压器，从而使引弧器具有体积小、重量轻和引弧可靠的特点。
By changing frequency, using an intermediate-frequency transformer instead of a low-frequency transformer can make the arc starter small, light and reliable.
本实用新型涉及一种变频传动整流变压器，属于变压器技术领域。
The utility model relates to a frequency conversion transmission rectifying transformer which pertains to the field of transformer technology.
提出了一种组合式三相变压变频电源的工作原理和电路结构。
This article describes the operation principle and circuit scheme of a sort of three-phase combined variable voltage and variable frequency power supply.
柴电推进系统，电机，变频器，变压器，配电板，自动化等。
Electric Propulsion and Thruster Systems, Motors, Frequency Drives, Switchboard, Automation.
该产品系列还支持过滤器，变频器，逆变器，变压器，电源供应器及工业用电池等电气设备制造商。
The product range also supports electrical device manufacturers of filters, converters, inverters, transformers, power supplies and industrial batteries.
具有变频器、变压器等从业背景及技术管理者优先。
With the technical background of frequency converter, transformer industry is priority.
介绍无轨电车采用变压变频控制的三相感应电动机驱动技术。
The variable voltage variable frequency(VVVF) control of 3-phase induction motor for driving trolleybuses is expounded.
牵引逆变器为牵引电机提供三相变频、变压的交流电。
The traction inverter provides VVVF three-phase ac voltage for traction motors.
概述了变压器绕组绕线机可采用的一种变频调速技术方法，并详细介绍其结构、工作原理及特点。
A frequency control technique method used in transformer winding machine is summed up, and its structure, operation principle and characteristic are introduced in datial.
永磁同步电机调速系统是采用变压变频技术对电机进行调速的控制系统。
The speed-adjusted system for Permanent magnet synchronous motor is used VVVF technology.
反激变压器的设计方法文献中各异，课题根据法拉第电磁感应定律，推导出变频大功率断续反激式变换器变压器的设计方法。
The design means of high frequency DCM flyback converter is derivated on the base of Faraday law of electromagnetic induction in subject.
反激变压器的设计方法文献中各异，课题根据法拉第电磁感应定律，推导出变频大功率断续反激式变换器变压器的设计方法。
The design means of high frequency DCM flyback converter is derivated on the base of Faraday law of electromagnetic induction in subject.
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