您要查找的是不是:
- Power Factor Power factor is the cosine of the angle between the active power( kW) and apparent power( kVA) in a circuit. 功率因数功率因数是电路中有功功率(W)视在功率(VA)间夹角的余弦值。
- Power Factor Power factor is the cosine of the angle between the active power (kW) and apparent power (kVA) in a circuit. 接地 接地是电路与地面或地面上的导体的连接,可以是有意的也可以是意外的。
- The result manifests that the adpotion of APFC(active power factor correction) technology can make the power factor close to 1 and the THD less than 5%. 结果表明;引入APFC(有源功率因数校正器)技术的电源可实现功率因数接近于1;总谐波分量THD<5%25。
- Main circuit topologies and control methods are analyzed and compared on the basis of the principle of Active Power Factor Correction (APFC), which characteristics are summarized. 本文在论述有源功率因数校正基本原理的基础上,对有源功率因数校正的主电路拓扑及控制方法进行了分析与比较,总结其特点;
- The technology of the dual-Boost Active Power Factor Corrector (APFC) is the emphases of this thesis. And the purpose is to study a high performance digital controlled APFC. 本文重点就UPS 前端输入采用的双Boost 型APFC 技术进行探讨,目的在于研究一种数字化高性能的功率因数校正器,选取平均电流控制的方式,以期得到低噪声干扰,高功率因数的试验结果。
- The host computer finishes the calculation of active power, reactive power and power factor, inquire fuzzy form of controlling , give and publish the controlling amount. 工控机完成有功功率、无功功率以及功率因数的计算,并查询模糊控制表,给出控制量。
- It is widely applied in power factor correction and active power filer for power harmonic suppression by its virtue of simple control circuit and excellent dynamics. 由于其控制电路简单,控制效果好,在电力谐波治理领域中的功率因数校正器和有源电力滤波器的控制中得到了广泛运用。
- In accordance with the nonlinear and time-varying characteristics of the active power factor correction system, this theme researches the application of Fuzzy control in the active power factor correction (APFC) system. 针对有源功率因数校正(APFC)系统中控制对象非线性和时变的特点,本文研究了Fuzzy控制算法在APFC系统中的应用。
- In order to shape the input line current and to reduce the harmonic currents, the active power factor correction circuitry (APFC), consists of APFC controller TDA4863, is required in front of the electronic ballast. 为了得到连续的交流电网输入电流和降低谐波电流,在电子镇流器前端配备了有源功率因数控制(APFC)模块TDA4863组成的有源功率因数校正电路。
- Secondly, one novel method called power factor mode is advanced The method can achieve indirectly the control of reactive and active power decoupling and greatly simple the control method. 其次,在分析的基础上提出了一中新型的控制方法,即功率因数控制方式,可间接达到有功功率和无功功率解耦控制的目的,大大简化了控制方法。
- Many experiments are done on the experimental equipment of shunt active power filter based on DSP. The harmonic and reactive current detection technique based on unity power factor and the shunt active power filter based on it are tested. 在一套DSP数字控制的并联型有源电力滤波实验装置上作了大量的实验,对基于单位功率因数的谐波电流检测方法和以此为基础的并联型有源电力滤波器进行了实验验证,取得了满意的试验结果,进一步验证了基于单位功率因数的谐波检测和控制技术的有效性和理论分析的正确性。 浙江大学博士学位论文
- In the part of rectifier, good performance of 3-phase active power factor correction was complete by using three isolate single-phase APFC circuits. Applying power factor controller MC34262, only a little additional circuit were needed. 在整流部分中,利用单相功率因子校正技术实现了三相功率因子校正,用三个单相功率因子控制芯片MC34262完成了三相功率因子校正部分,外围电路少,功率因数高,结构简单。
- Those PSS circuits which have good overall performances are applied to single-phase PWM Active Power Factor Correction (APFC) circuit which is high-frequency PWM technology and also operated in CCM. 本文还将那些具有综合性能特性较佳的PSS电路也应用到高频PWM技术的AC-DC整流器的有源功率因数校正器( Active Power Factor Correction,APFC)上。
- Active power filters (APF) are widely used to reduce harmonics, compensate the reactive power, and improve the power factor due to its advantages of superior controllability, fast responding, small bulk and weight, and its achievements are more and more. 由于高可控性、快速响应、体积小、重量轻等优点,有源滤波器在抑制谐波、补偿无功、提高功率因数上得到广泛的应用,研究成果也越来越多。
- The techniques, PWM soft switching, active power factor correction(APFC), electric-magnetic compatible and electric-magnetic interfere design, simulation research and brainpower controlling are the new focus of welding power supply. 脉宽调制软开关电路、有源功率因数校正、电磁兼容和电磁干扰设计、仿真研究及智能控制技术的应用已成为当前焊接电源研究的新热点。
- Introduction was made to a kind of latest discontinuous conduct mode boundary(DCM Boundary)active power factor correction(APFC)controller MC34262's main features with discussion stress on the design process of its applicable circuit. 介绍了一种最新的临界断续导电模式DCM Boundary的有源功率因数校正APFC控制器MC34262的主要特点,并重点讨论了其应用电路的设计过程。
- A 150W AC/DC converter with universal input and fixed output voltage is analyzed and then designed based on MC33262. The principle and structure of active power factor corrector (APFC) and MC33262 is discussed in this paper. 文中设计了一种采用功率因数校正专用芯片MC33262的宽电压输入范围、固定升压输出的150W的AC/DC变换器,详尽地分析和讨论了有源功率因数校正(APFC)控制技术原理、APFC硬件电路结构。
- With Active Power Factor Compensation 有源功率因数补偿式电子镇流器
- Study of Active Power Factor Correction Technology 有源功率因数校正技术的研究
- active power factor correction (APFC) 有源功率因数校正