In a drive system of power transistor inverter-motor, not only can it be used in fine control of motor current waveform, phase, amplitude and frequency, but can also be used to sense, fault current.
在大功率晶体管逆变器——电动机驱动系统中，它不但可用来对电动机电流的波形、相位、幅值和频率进行精细控制，而且能快速地检测出故障电流。
This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.
本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。
On line predicting obtaining power system post disturbances steady frequency is beneficial for frequency stability assessment and emergency control.
在线预测系统扰动后的稳态频率，有利于扰动后系统频率稳定性评估和紧急控制。
High frequency pulse width modulation power control systems can be realized using semiconductor switches.
高频脉冲宽度调制电力控制系统，可以实现用半导体开关。
Using computer control, man-machine dialogue mode, the completion of the power frequency voltage breakdown of insulation media, power frequency withstand voltage test.
采用计算机控制，过人机对话方式，完成对、绝缘介质的工频电压击穿，工频耐压试验。
The switch frequency of the direct power control system using hysteresis comparator is not fixed, which is a technical issue in practical needing be solved.
采用滞环比较器的直接功率控制系统的开关频率不固定，是实用化过程中需要解决的一个技术问题。
Auto power control, frequency auto-adjustment and load balance make it more flexible and stable to establish large scale network.
自动电源控制，频率自动调整负载平衡，使其更为灵活和稳定，建立大规模的网络。
A long field running of the medium-frequency power supply shows that the control system presented in this paper greatly improves its stability and quality.
长期的现场运行表明，这一控制系统大大提高了电源的可靠性及中频电源产品质量。
When applied to active power filter, this novel control scheme not only reduces the switching frequency and the switching loss, but also has better performance and robustness.
该控制策略在有源电力滤波器的应用，不仅大大减小了开关频率、降低了开关损耗，而且具有很强的鲁棒性和更好的控制精度。
The method of instantaneous value comparison for source current control of unity power factor rectifier possesses advantages of simplicity as well as valid restriction for maximum switching frequency.
在单位功率因数整流器中，利用瞬时值比较法来控制电源电流，不但控制简单，还可有效限制器件的最高开关频率。
In intelligent peripheral subsystem, Radio Frequency Front Modules include linear power amplifier, low noise amplifier and detection control circuit.
智能天线子系统中，射频前端模块包括线性功率放大器，低噪放大器，检测控制电路。
The industrial frequency control technique lor power load control is introduced .
本文介绍了电力负荷的工频控制技术。
Aluminum ultrasound casting; ultrasound power; frequency tracking; power control.
铝合金超声铸造；超声波电源；频率控制；功率控制。
Main functions of the governing system are following: frequency regulation while unit isolating from power system, power control while unit operating in power system.
现代水轮机调速器的主要功能是起机组频率调节器和机组功率控制器的作用。
To maintain both the voltage and the frequency within limits requires fine power control and load regulation.
既要保持电压而在限制范围内的频率，需要良好的功率控制和负载调节。
On the basis of the study situation of induction heating, the digitization of the rectification control circuits of medium frequency power supply is achieved by using microcomputer in this paper.
基于感应加热研究现状，利用微机对中频电源控制电路实现了数字化。
The UPFC power frequency model with its main and supplementary control block diagrams and the formulation for FDC parameter optimization are presented.
建立了UPFC的频域模型，给出了主控制和辅助控制的框图，推导了模糊阻尼控制器参数优化的公式。
Some factors affecting the frequency and magnitude of power supply, such as supply voltage, duty of control signal, the resistance and capacitance of oscillation circuit are discussed.
讨论了一些影响放电电压大小及频率的电源参数，如供电电压、控制信号占空比、振荡电路的电阻和电容等。
Link quality analysis (LQA) is a key measurement process in adaptive frequency hopping (AFH) communication systems and results in adaptive frequency and power control.
信道质量评估是自适应跳频通信的关键技术，其实时评估结果为自适应频率控制和自适应功率控制提供依据。
Wire and cable: cable power, communication cable, RF (radio frequency) cable, control cable, data cable, fiber-optic cable and other varied materials and purposes exclusive use.
电线电缆：电力电缆，通讯电缆，射频电缆，控制电缆，数据电缆，光纤电缆等不同材质和不同用途的专用电缆。
Some parameters affecting the frequency and magnitude of power supply, such as supply voltage, duty of control sigal. the R and C of oscillation circuit are discussed.
对影响放电电压大小及频率的电源参数进行了讨论，如供电电压、控制信号占空比、振荡电路的R和C等。
The thesis designs a frequency-power automatical control unit based on PLC, enabling generators to run reliably even if in the event of heavy load fluctuating.
本文设计了一种基于PLC控制的自动调频调载装置，可使发电机组在大负荷波动的情况下也能可靠地运行；
This paper is divided in six chapters, including the medium frequency power supply of thyristor's theory, design, regulation strategy, control system, experiments and conclusion.
本文的内容主要分为六章，分别阐述了晶闸管中频感应电源的工作原理、主电路设计、控制策略、控制系统实现、试验结果和结论。
The basic operation principle of the series active power filter for harmonic suppression of frequency converter is analyzed in this paper, and its control method and control circuit are studied.
文章分析了适用于变频器谐波抑制的串联型有源电力滤波器的基本工作原理，并对其控制方法和控制电路进行了研究。
First, a suitable mathematical model for the frequency and tie line power of decentralized control is given.
首先给出一种适于对频率和交换功率进行分散控制的数学模型。
In total number high frequency high-power UPS, there are two or more pieces DSP and SCM accomplishing the control and supervision missions which are complicate.
在全数字化高频大功率UPS中，大都采用两片或多片dsp与单片机共同完成较为复杂的控制和监控任务。
According to driving requirements of hybrid electric vehicle (HEV), a novel high frequency AC hybrid power control system is presented.
根据混合型电动汽车的性能要求，提出了一种采用高频交流的混合动力控制系统。
This paper introduces a new inversion control circuit based on 80c196mc microcontroller for thyristor medium frequency power supply. Meanwhile the hardware and software designs are also provided.
针对晶闸管中频电源的核心——逆变电路，提出了一种基于80c 196MC单片机的控制电路，给出了其构思的硬件和软件设计。
An APFC control solution for high power variable frequency air conditioner is introduced.
本文介绍了较大功率变频空调的一种APFC方案。
An APFC control solution for high power variable frequency air conditioner is introduced.
本文介绍了较大功率变频空调的一种APFC方案。
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