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- Development and Application of the IMPACT Adjustable Frequency AC Drive and Master/Slave Control on 120t BOF IMPACT技术变频器及主/从控制在120t转炉上的开发与应用
- adjustable frequency AC drive 变频器
- The DC into AC current adjustable frequency that the inverter on. 将直流变为频率可调的交流电流就称逆变。
- A.Provide a complete adjustable frequency motor drive system consisting of a pulse width modulated (PWM) inverter for use on inverter duty rated AC induction motors. 提供一个完整的可调频马达驱动系统,包括一个脉冲宽度调制转换器,该转换器起额定交流感应电机的转换作用。
- Type DJJ1high-speed EMU uses advanced AC drive system of the world. 在广深铁路已投入商业运营的DJJ1型高速交流传动高速电动车组采用了世界先进水平的交流传动系统。
- E.Division 15 Contractor shall furnish all adjustable frequency drive controllers (AFD's, also commonly referred to as VFD's) unless AFD's are located in a motor control center. 承包商应提供所有可调频率驱动控制器(简称AFD,通常也成为VFD),除非这些可调频驱动控制器也安装在电机控制室/中心。
- Direct Torque Control(DTC)is a new technology of frequency conversion timing after Vector Control(VC) in the field of AC drive systems. 直接转矩控制是交流伺服系统中继矢量控制之后的一种新的控制方式。
- Analysis and Simulation Research of AC Drive System for Shanghai Metro Line No. 上海地铁二号线交流传动系统的分析与仿真研究。
- The experiment expressed that the square wave unit and EFT drive unit designed work very well,and the high frequency AC square wave welding machine has alraedy used to welding thin steel sheed successfully. 实验证明,设计的方波信号发生器与场效应管驱动器工作稳定可靠,所研制的方波交流高频弧焊电源已成功地对薄钢板进行了焊接。
- RF (or microwave) signals have switching considerations that differ from those for DC or low frequency AC signals. 射频(或微波)信号的切换不同于直流(DC)或低频交流(AC)信号。
- The adjustable frequency range can be extended by decreasing the wide of the bridge and the resistance of the Wheatstone bridge. 中心频率的可调节范围可通过减小梁的宽度和压敏电桥的电阻来扩展。
- Simulation and experiments indicate that the control method features better control effect than the AC drive system based on PID adjustor control. 仿真试验结果表明此种控制方法比基于PID调节器控制的交流传动系统具有更好的控制效果。
- An high frequency AC converted from DC is provided to a transformer and a set or multisets of voltage shall be produced . 将直流电转化为高频率的交流电提供给变压器进行变压,从而产生所需要的一组或多组电压。
- Since 100% continuous regeneration is possible, the braking capability of the AC drive is greatly improved. 自从100%25连续再生可能、制动的交流传动能力已大大提高。
- Field Oriented Control (FOC) and Direct Torque Control (DTC) are the two classical projects for AC drive systems. 矢量控制和直接转矩控制是当前交流传动领域两种典型的控制方案。
- adjustable frequency electric drive 可档率电力驱动
- T18 computer therapeutic equipment is a low and intermediate frequency AC machine. Clinic shows that the equipment is effective in curing painful diseases. T18电脑治疗仪是一种中低频交流电治疗仪,临床实践说明它在治疗疼痛性疾病方面有效。
- Test shows the tr action converter fully satisfies the requirements by power distributed AC drive EMU. 试验表明 ,该牵引变流器完全满足动力分散交流传动电动车组对牵引变流器各项技术指标的要求
- A novel topologic structure of high frequency AC pulse density modulation converter is proposed,and its operation principle,control scheme and design are described in detail. 提出了一种新颖的高频交流脉冲密度调制变频器的拓扑结构,并详细阐述了工作原理、控制方案和设计方法。
- DTC directly calculate and control the torque of AC drive in the stator reference frame. 直接转矩控制在定子坐标系下计算和控制交流电机的转矩,采用定子磁场定向控制,直接对逆变器的开关状态进行最佳的控制。