The traction inverter provides VVVF three-phase ac voltage for traction motors.
牵引逆变器为牵引电机提供三相变频、变压的交流电。
Voltage unbalance of three phase ac distribution systems adversely affects power customers.
配电系统三相电压的不对称会对用户造成一系列不利影响。
3-phase ac arc furnace electrode up-down control system is a complex multiple variable coupling control system.
三相交流电弧炉电极升降控制系统是一个复杂的非线性多变量耦合控制系统。
With its high maturity three-phase ac drive technology has become the standard for practically all new vehicles.
交流电传动技术的不断成熟，使其真正成为所有新机车动车的标准。
The characteristic and application conditions of three-phase ac intelligent thyristor power module (ITPM) and load characteristic of klystron are presented.
简要叙述了三相交流晶闸管智能模块(ITPM)的性能特点、应用情况以及速调管的负载特性。
This paper introduces a simulation experimental system of 3-phase ac arc furnace, developing a DSP based electric-arc furnace electric pole fluctuation control system.
介绍一种按照实际交流电弧的特性设计的三相交流电弧炉仿真试验系统，针对电弧炉电极升降控制提出了一种基于DSP的控制方案。
Through experiments and practical operation, it is proved that TMS320F240 is powerful and features high speed operation, it is suitable for controlling 3 phase ac motors.
经实验和实际应用证明，TMS320F 240功能很强，运算速度很快，适用于三相交流电机的控制。
Finally, relative experiments of 3-phase ac motor SVPWM open-loop control are achieved using this experiment platform, the testing result of system comes to the request designed.
最后，在该实验平台上实现了三相交流电动机SVPWM算法的开环控制实验，实验结果表明系统达到了设计要求。
A generator system that includes a three-phase ac machine and an active rectifier bridge employing low on-resistance MOSFET switches for converting the ac current from the machine to a DC current.
高效发电机。一种发电机系统包括三相ac电机和应用低导通电阻MOSFET开关的有源整流器电桥，用于将来自电机的AC电流转换为DC电流。
This is the three-phase AC induction motor vector control procedures.
这是三相交流异步电动机矢量控制程序。
The principle of pure digital PWM of the three-phase AC motor is analyzed.
分析了三相交流电机全数字脉宽调制的原理。
A three phase full resonant cyclo-converter suitable for converting a three phase AC supply to a DC output.
一种适用于将三相ac电源转换为DC输出的三相全谐振环形转换器。
Electrical products which have LCD time counter, Layer sensor, Three-phase AC fault protection relay and so on.
其中电器类产品有液晶显示计时计数器、平层感应器、断相错相三相交流保护继电器等等。
Based on the resonance reactor and the Magnetic Energy Recovery Switch (MERS), a novel single-phase AC-DC converter is designed.
将谐振电抗器和磁能恢复开关引入到单相ac - DC变换器中，设计了一种新颖的混合单相ac - DC变换器。
The 5th harmonic current of 3-phase AC power source can be reduced by the 6th harmonic feed forward of 3-phase rectifying voltage.
采用三相整流电压的6次谐波前馈（注入），以减小三相电源的5次谐波电流。
This paper presented a thyristor controlled single-phase to three-phase converter suitable for driving an induction motor with a single-phase AC supply.
提出一种单相电源供电时适用于异步电机传动的单相–三相变换器。
A high-power hand-operated three-phase AC generator includes a handle, a handle fixed plate, a driven gear, a press mounting gear, and a generator box body.
一种大功率手摇三相交流发电机，其包括一手把、一手把固定板、一从动齿轮、一压装齿轮、一发电机箱体。
In order to solve the requirement of high precision equal phase in three-phase AC power supply, one AC power supply is designed based the traditional DDS technology.
针对某设备所需的三相电源相位精度要求高的特点，在传统DDS技术的基础之上，设计了一款高度对称的三相电源。
They provide system security and immediate reliable low level ground fault detection on three-phase AC resistance grounded or grounded electrical distribution systems.
此类继电器能够增加系统安全性，并对三相交流接地电阻或接地配电系统进行可靠的低级接地故障检测。
The three-phase AC self-regulating speed motor do not use high-power electron device, has non exterior additional speed-regulating equipment and does not bring pollution.
三相交流自调速电动机不使用大功率电子器件，也没有外部附加的调速设备，不产生污染电网的谐波。
The thesis introduces a three phase AC motor's mathematical model in static reference frame and a simulation system for AC motors to develop a vector control inverter system.
针对三相异步电机矢量控制系统的要求，根据在静止坐标系统中异步电机的数学模型，进行了系统仿真。
This charger has the trait of high power factor, can be connected to ordinary single-phase AC sockets directly, and offers low-power and low speed charging for storage batteries.
该车载充电机具有较高功率因数，能够与普通的单相交流电源插座直接连接，为电动轿车的蓄电池组提供小功率慢速充电。
The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage.
该晶闸管触发器采用集成运数放大器，移相触发脉冲的形成是根据三相交流电的各相与移相控制电压直接比较原理实现的。
The shift trigger pulse of the thyristor trigger circuit with integration amplifier is generated by comparing directly principle of three-phase AC and shift-phase control voltage.
该晶闸管触发器采用集成运数放大器，移相触发脉冲的形成是根据三相交流电的各相与移相控制电压直接比较原理实现的。
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