Compared to the ac Transmission and local power generation, HVDC light system is not only cost advantages, it also exchanges to enhance ac power quality for a new approach.
比起交流输电和本地发电，轻型高压直流输电系统不仅具有成本优势，它也对提高交流电网电能质量提供了新的途径。
By comparison with analogue AC servo system, some remarkable features of digital AC servo system, such op programming function, system stability and system performance are described.
通过与模拟交流伺服系统的比较，说明了全数字交流伺服系统可编程能力强、系统稳定性好、系统性能提高等特点。
By digital simulation, the Ac carried wave system and its equivalent Dc system are checked and the feasibility of Dc method equivalent to the Ac carrier wave system is verified.
通过数字仿真，比较了交流载波系统和其等效直流系统，验证了交流载波系统等效直流方法的可行性。
In 1998, we successfully developed brand new AC inverter air conditioner with AC inverter control system.
1998年成功研发AC变频冷气微电脑温度控制系统。
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。
Its software is designed to calculate the running parameters of the AC drive system, including transformer, quadrant rectifier, DC circuit, inverter, AC motor and train load.
系统采用软件方式实时计算交流传动系统的运行参数，包括变压器、四象限整流器、直流中间回路、逆变器、电机及负载。
Based on the mathematical model of AC asynchronism motor, a novel method for modeling and simulation of AC asynchronism motor control system in Matlab was proposed.
在分析交流异步电动机数学模型的基础上，提出了交流异步电动机控制系统仿真建模的新方法。
A new strategy of tank gun control system to apply to control AC motor was introduction and improved-designing of AC motor based on basic method of Direct Torque control was proposed.
介绍了坦克炮控系统中对交流电机的一种新型控制策略，并在基本型直接转矩控制方法上进行了改进设计。
AC motors are usually used in modern traveling crane control system, so the technology of AC speed regulation is also adopted widely.
现代行车起重控制系统大多采用交流电机拖动，因此交流调速技术也被广泛应用。
In this paper a new control strategy suited for AC servo system of permanent magnet AC motor is introduced.
本文介绍了一种适用于正弦波永磁同步伺服系统的控制策略。
In the system, Intel 80c196mc is used as control center and IPM is used as an intelligent power device in the main circuit of AC DC AC voltage type inverter.
该系统以80c 196MC为控制核心，采用IPM智能功率模块为功率元件，组成了交直交电压型逆变器主回路。
The experiment technology and equipment of ac drive system are the important method of the study, development and speciality teaching of ac traction engine.
交流传动系统实验技术和设备是交流传动机车研究、开发及专业教学的重要手段。
Being a simple and reliable speed control system for AC inductive motors, the device features better performance than AC variable voltage speed control system does.
本装置的性能优于交流调压调速系统，是一种简单而可靠的交流绕线式电动机转速控制系统。
Based on the mathematical model of AC induction motor, an improved AC induction motor vector control system has been proposed.
在分析感应电机数学模型的基础上，提出了一种改进的交流感应电机矢量控制系统。
The paper thoroughly introduces the ac-ac frequency converter in driving system of asynchronous motor for underground coal mine explosion-proof winder.
本文对一种用于煤矿井下防爆绞车驱动的交交变频器——鼠笼式异步电机传动系统做了全面的介绍。
Thus, the object of the power system analysis software has been changed from AC power system into AC-DC hybrid power system, which requires the software for the AC power system to be improved.
这样，电力系统分析软件的分析对象从纯交流系统变为交直流混联电力系统，这就要求对纯交流系统的分析软件进行改进。
A new way to generate stable ac current is found with feed back control system by single chip microcomputer. So a new high power ac current regulator is developed.
再用单片机组成反馈控制系统，从而找到了交流稳流的新方法，研制出一个大功率交流稳流电源。
This system realizes the Wizard parametric design of ac contactor, and establishes the basic parts database of ac contactor.
本系统实现了交流接触器的向导式参数化设计，并建立了交流接触器基本零件数据库。
The ac traction control software and communication program completed their tasks in experiment, and the simulant and experimental system of the ac traction was in better control.
经过实验运行，交流牵引控制软件和通信程序实现了本课题需要完成的任务，交流牵引模拟实验系统得到了很好的控制。
In the alteration of the rewinder's controlling system, DC driving is replaced by ac driving, and frequency governors are used to control the ac motors.
在对复卷机控制系统的改造中，我们用交流传动代替直流传动，用变频器对交流电机进行调速控制。
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。
In this paper a new voltage compensator in electric distribution system is discussed, the design employs a PWM AC-AC converter (4, IGBTs per-phase) along with an auto-transformer.
介绍在配电系统中一种新型的电压补偿器，即在自耦变压器中集成pwmAC - AC变换器(每相4个IGBT元件)。
The AC servo system of FANUC 11 series is a AC-DC-AC conversion frequency speed adjusting system, which use PWM as the speed-adjusting control method.
FANUC一11型交一直一交频调速系统，调速的控制方法为脉冲宽度调制(pwm)法。
From point of view of electric-energy control, AC excited generation system for wind-energy with variable-speed and constant-frequency includes AC excited generator, AC exciter and the control system.
交流励磁变速恒频风力发电系统从电能控制的角度来看，它包括交流励磁发电机、交流励磁器和发电控制系统。
The problem of oversimplification and improper selection of DC model, which exists in the DC modeling when AC and DC systems interact in AC/DC hybrid power system, is discussed.
讨论了目前研究交、直流混合电网交直流系统相互作用时在直流建模上存在的模型过度简化及模型选用不恰当的问题；
On the basis of the mathematical model of AC induction motor in two phase axis system, the static measurement of electrical parameter for AC motor is completed using pulse voltage and pulse current.
根据交流感应电动机在两相静止坐标系上的数学模型，采用脉冲电流法、脉冲电压法实现了对交流电动机电气参数的静态测试。
To satisfy high requirements for position follow accurateness and location precision of ac servo system at present. This paper researches and develops ac servo position control system based on DSP.
为了满足当前交流伺服位置跟随精度和定位精度高的要求，本文研究并开发了基于DSP的交流伺服位置控制系统。
For three-phase asynchronous motor AC speed-adjustment system, this paper lays a strong emphasis on study of asynchronous motor AC speed-adjustment system consisted of dual-PWM converters.
针对三相异步电机交流调速系统，重点对由双端PW M变流器组成的异步电机的交流调速系统进行了研究。
For three-phase asynchronous motor AC speed-adjustment system, this paper lays a strong emphasis on study of asynchronous motor AC speed-adjustment system consisted of dual-PWM converters.
针对三相异步电机交流调速系统，重点对由双端PW M变流器组成的异步电机的交流调速系统进行了研究。
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