有源滤波器

• Power electronics broad application in power systems brings serious harmonic pollution . this paper introduces harmonic harm , the measure of restraining harmonic and the basic principle of filter
  摘要电力电子装置的广泛应用，给电力系统造成了一定的谐波污染，文中简要论述谐波的危害、谐波的治理措施及无源滤波器和有源滤波器的基本原理。
• At last , two methods to design current mode active filters are presented . the spice simulation of the filters designed with the two methods confirms the two methods are correct and effective
  全面归纳了基于电流传送器的有源滤波器设计方法，并详细介绍了两种电流模式滤波器的设计方法? ?伴随网络法和跳耦法，给出了滤波器的设计实例和spice仿真。
• This paper summarizes the design ways of active filter based on the current conveyors in detail , and three ways which can deduce current - mode continuous time filters from voltage - mode active filters
  全面归纳了基于电流传送器的有源滤波器设计方法，研究了由电压模式有源rc滤波器导出使用电流传送器( cc )的电流模式连续时间滤波器的三种不同的方式。
• The following paper is about a type of instrument for the signal collection that can be used to monitor big - size bearing . the key technology about it is also introduced . during the analogue section , principal line is analogue signal pspice simulation
  在故障检测仪前向模拟信号处理部分，以模拟信号的pspice分析与仿真为主线，分析与设计了传感器、低通有源滤波器等部分的内容。
• 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。
• In the future , pv grid - tied systems could be one of the most important means for improving the power factor of main grid . the author analyzed its performance and advantages and has been studied it ' s topological construction for using as an apf ( active power filter )
  使用光伏并网发电系统对电网进行无功补偿和功率因数校正是未来光伏应用的一个方向，本文仔细分析研究了使用光伏并网发电系统作为有源滤波器的优点和运行特点。
• At present , the typic harmful current detection methods are the fast fourier transform algorithm in frequency domain and methods based on the instantaneous reactive power theory , these methods all require some transform and quick , real - time calculating , so high precision analog multipliers or high speed dsp chip with fast a / d are needed , this results in complex circuit and high cost ， which have restricted the development of apf
  目前畸变电流检测常用的方法有频域法的fft和基于瞬时无功理论的畸变电流检测法。这些方法均有一定的变换，需要快速、实时运算，因此必须使用高速的数字微处理器和高性能a / d转换器，这必将大大提高系统成本，使得电路结构复杂，在一定程度上限制了有源滤波器的发展。
• Then the paper analyzes control system of hybrid active power filter , the way of harmonic detecting and the principle of control system , digital low pass filter and the generation of pwm , on the base of which the paper designs a new parallel hybrid active power filter which is controlled by tms320lf2407 , and detailedly introduces drive circuit of pwm , sampling circuit of current , voltage adjustment and protection circuit , communication circuit , liquid crystal display circuit
  分析了混合型有源滤波器的控制系统、谐波检测方法及控制原理、数字低通滤波器和pwm信号的产生,在此基础上设计了一种基于tms320lf2407为控制核心的并联混合型有源电力滤波器硬件原理图。并对pwm驱动电路、电流采样电路、电压调整、按键输入和保护电路、通信模块、液晶显示模块进行了较详细的分析说明。
• In this section , the main content is about the transducer and the low - pass filter . the simulation program of wave filter circuit and the stability of wave filter and analogue signal pspice analysis are integrated in chief . these are constituted as a circulatory feedback mode , so that it speeds the process of establishing electric circuit parameters
  尤其在低通有源滤波器的分析与设计这部分内容中，将滤波器电路的程序仿真、滤波器稳定性分析和pspice分析设计有机的结合起来，组成了一个循环反馈的分析模式，加快了电路参数的确定过程，缩短了产品的研发周期。
• So the emergence of facts is just for the purpose of solving these problems of power system . as a branch of facts , active power filter ( apf ) , a new power and electric equipment , its function is to eliminate load harmonic and compensate system line reactive power , damp system surge of node voltage , decrease power waste of system line
  作为facts的一个重要分支- - - -有源滤波器( apf ) ，是为了解决系统线路无功功率因数过低以及负载线路谐波过多，从而出现线路损耗大、电源电压的瞬态波动过陡等一系列相关问题而产生的一种新型电力电子装置。