VVVF

This stimulates us to research on VVVF asynchronous motors for AC driving rig.

相应地也带动了对交流传动钻机用变频调速异步电动机的研究.

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The AC VVVF ( Variable Voltage Variable Frequency ) speed regulation is a integrated technology.

交流变频调速技术,是一门综合性的技术.

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VVVF Inverter Applied to Elevator.

当代电梯控制系统设计策略.

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The results showed that the VVVF control system has good speed static and dynamic performance, the effectiveness and feasibility of the designed system is proved.

结果表明了该变频调速控制系统具有良好的动静态调速性能，验证了系统设计的有效性和可行性。

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WEITIAN bed elevator adopts VVVF control technology for its driving system, which could control the running speed of elevator accurately and enables it smooth running.

WEITIAN医用电梯驱动系统采用变频变压控制技术，能精确地控制电梯的运行速度，运行平稳、舒适。

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quenching trough installed VVVF oil blenders , can greatly reduce the workpiece deformation hardening.

淬火槽安装有变频调速油搅拌器，可大大减少工件淬火变形。

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Speed close-circuit control of the molecule pump VVVF adaptive control is based on a vacuum degree in the vacuum room, which effectively soles the contradiction between the stability and the instability of the vacuum degree.

分子泵VVVF自适应控制的速度闭环控制建立于真空室真空度的基础上，从而有效解决了真空度稳定和陡降之间的矛盾。

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The Activity Scanning Simulation of Elevator Group Control Systems.

VVVF变频器在电梯中的应用.

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On the roller with VVVF three-phase asynchronous motor design

浅谈辊道用变频调速三相异步电动机的设计

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A Slip Frequency Controlled VVVF System With Fuzzy Logic Controller

采用模糊控制的转差频率控制变频调速系统

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The rotation speed of turntable is adjusted by VVVF facility through a knob in electric panel.

工作转台速度的调节,是通过变频调速装置,在电气操作柜上,用旋钮进行平稳的调整.

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The transducer adopts integrated intelligence power module IPM. SPWM control signal is produced by special chip, in inverter VVVF at one time is completed.

它采用集成化的智能功率模块IPM，正弦形脉冲宽度调制控制信号由专用芯片产生，在逆变器内同时完成变频变压。

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The type of quiescent VVVF inverter and design characteristic of inverter-fed motor is introduced.

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.

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Application of Direct Torque Control in nation-invented VVVF inverter for Guangzhou Metro Line 1 vehicles

直接转矩控制技术在广州地铁一号线车辆VVVF逆变器国产化中的应用

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In hydraulic technology, PLC technology, VVVF technology applications have more experience.

在液压技术 、 PLC技术 、 变频调速技术应用上有较多经验.

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This system of speed governor adopts the way of VVVF speed governor.

其中,它的拖动系统采取的是最具有发展潜力的VVVF调速方式.

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The paper introduces the composition, principle and dynamical performances of the closed loop VVVF system using magneto electric pulse tacho apparatus to constitute the slip frequency control.

介绍采用磁电脉冲测速构成转差频率控制的闭环变频调速系统的组成、原理及动态性能。

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Application of VVVF and PLC in the constant voltage variable supply water control system

交流变频调速器在恒压变量供水控制系统中的应用

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A Control System of VVVF Elevator with Single Chip Microprocessor and PLC.

PWM逆变器 型交流电梯紧急自动疏散系统.

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The elevator has VVVF inverter that can accurately control traction and drive systems ( door drive system ).

精确的控制曳引驱动系统 ( 门驱动系统 ) 的VVVF逆变器.

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The paper proposes a scheme of using three phase inverter bridge to realize VVVF of single phase capacitor motor.

提出用三相逆变桥电路实现单相电容电机变频调速的方案。

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The experiments show that the presented VVVF speed-variable drive system has good performances and traction properties which is quit applicable to the overhead locomotives.

试验表明，所设计的变频调速系统数字化实现方便，具有良好的调速和牵引性能，在矿机车交流传动领域有着广泛的应用前景。

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Welding carriage, screw-driven , powered by AC ( VVVF ) drive motor and controller with tachometer speed control.

焊头小车, 交流 ( VVVF ) 电机传动,有控制转速的控制器.

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The study on high frequency SPWM VVVF system with the fault self-diagnosis

带有故障自诊断系统的高频SPWM交流调速变频器的研究

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The application of VVVF in the liquid level control of lubricating tank

变频技术在调和油罐液位控制中的应用研究

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Protection system of VVVF inverter on Shanghai Metro Line 2 vehicles

上海地铁二号线车辆VVVF牵引逆变器保护系统

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VVVF motor at this stage is the most effective energy-saving equipment.

变频调速成为现阶段最有效的电机节能设备。

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