牵引变电所并联混合电力滤波器最小投资优化设计

在混合电力滤波器的设计过程中,滤波效果、系统安全和设备总投资均是需要考虑的重要因素.本文综合考虑以上因素对并联混合电力滤波器中的有源和无源电力滤波器的滤波任务进行了分配,给出了并联混合电力滤波器的容量计算公式和最小投资优化设计模型,并据此对某牵引变电所的并联混合电力滤波器的无源电力滤波器参数以及有源电力滤波器的容量进行优化设计,取得了令人满意的设计和仿真结果.     

牵引变电所混合电力滤波器优化设计及滤波效果

提出了一种适用于电气化铁道谐波和无功综合补偿的混合电力滤波器方案，它利用无源电力滤波器承受基波电压，有效地降低了有源电力滤波器的容量。通过建立混合电力滤波器的容量优化模型，对其整体容量进行优化设计。最后结合具体算例作仿真分析，验证该方案在工程实现上的可行性和滤波有效性。     

综合电力滤波系统中无源滤波器的优化设计

本文首先介绍了由小容量有源滤波器和无源滤波器串联构成的综合电力滤波系统，继而对系统中无源滤波器的设计规则进行了分析，并采用时域的方法对无源滤波器进行了优化设计研究，以有效的减小有源滤波器的设计容量。     

大功率有源电力滤波器驱动电路的设计

有源电力滤波器的主电路为由IGBT构成的逆变器结构,尤其是对大功率的有源电力滤波器,其主电路IGBT的可靠驱动以及故障检测是保证有源电力滤波器稳定运行的关键所在。因此针对100 k V·A的有源电力滤波器驱动电路进行设计,光纤接口电路实现了强弱电之间的隔离;并以2SD315AI作为核心驱动模块,据此设计了相关的外围电路,并针对驱动的关键问题进行了探讨分析,成功设计了驱动电路。经实际测试,对IGBT驱动特性良好,应用于有源电力滤波器,实现了对谐波电流的补偿。     

某于DSP的混合有源电力滤波器研究与设计

笔者结合我国电力系统谐波污染的实情，设计出了基于DSP的并联型混合有源电力滤波器，这种电力滤波器弥补了单一并联有源电力滤波器的缺陷，能以较小的补偿容量对大容量电力系统进行谐波抑制和无功功率补偿。实验结果表明：在局部电力系统中使用该装置后，基本上可消除局部电力系统的谐波污染，可使电能质量大为提高，并且能抑制由LC无源电力滤波器阻抗和电力系统阻抗引起的谐振。     

有源电力滤波器中双向快速充放电DC-DC变换器设计及仿真

为了满足强磁场装置电源供电极低电流纹波的要求,采用了并联有源电力滤波器。首先简述了并联有源电力滤波器的工作原理,并设计了一种新型的双向DC-DC变换器取代了以往并联有源电力滤波器中使用的水冷电阻,实现了对并联有源电力滤波器中的电容器进行快速充电与快速放电,从而降低了能量损耗。然后详细分析了变换器快速充电与快速放电的工作过程,并给出了具体的设计参数。最后进行了仿真验证,通过仿真波形可以看出,该双向DC-DC变换器可以正常工作,能够顺利实现能量的双向流通,满足并联电力有源电力滤波器的设计要求。     

有源电力滤波器在电弧炉电气系统中的应用

在分析抑制谐波常用方法的基础上，利用对称分量分解和滤波器提取基波分量来设计有源电力滤波器，采用先进的仿真软件工具MATLAB中的电力系统仿真工具箱对基于这种方法的有源电力滤波器进行仿真，仿真结果表明有源电力滤波器装置能够有效检测出高次谐波分量和电流波动分量，并可以消除谐波分量和波动分量。     

基于LCL的三相并联有源电力滤波器研究

为提高有源电力滤波器(APF)的谐波补偿性能,将LCL输出滤波器用作APF输出滤波器。建立了三相有源电力滤波器的空间电压矢量模型。利用有源电力滤波器的空间电压矢量模型给出了满足APF快速跟踪性能的输出滤波感取值范围。详细讨论了LCL滤波器各参数对输出滤波器性能的影响,提出了LCL输出滤波器的设计方法,并且给出了一个设计实例。最后仿真和实验验证了本文所提方法的有效性。     

基于DSP的有源滤波器的硬件设计与参数选择

有源滤波器是近年来无功和谐波补偿装置的趋势。探讨了基于DSP系统控制的有源电力滤波器硬件设计,以TMS320F2812为主要核心控制芯片,配合外围电路设计了一个有源电力滤波器的控制系统;给出了各个主要部分的设计电路、参数的选择以及设计关键;并对该系统进行了相应的实验。对实验结果的分析表明,该设计具有可行性。     

单相并联型有源滤波器在电铁谐波抑制中的研究

电力有源滤波器能够克服无源滤波器的种种缺点而被认为是一种能有效提高电能质量的装置。本文从实际应用的角度出发，在简要阐述单相并联型电力有源滤波器的原理的基础上，通过使用OrCAD/Pspice A/D软件对单点进行仿真，论证该装置的可行性。从而更进一步用编程的方法实现了实际检测数据的滤波模拟，证明了该种滤波器的有效性。这些结果对三相电力有源滤波器的设计也有一定的参考价值。     

一种非线性负载下逆变器输出滤波器的设计方法

提出了一种非线性负载下逆变器输出滤波器的分析与设计方法.用系统的闭环传递函数描述了滤波器参数值和系统时间常数之间的关系,并通过计算输出电压的总畸变因数(THD)来设计滤波电感和滤波电容的值.给出了设计方法的流程图,并且通过Saber仿真和实验验证了该方法的可行性和有效性.     

Balanced Gm‐C filters with improved linearity and power efficiency

A novel G_m‐C filter design technique is presented. It is based on floating‐gate metal oxide semiconductor (FGMOS) transistors and consists in a topological rearrangement of conventional fully differential G_m‐C structures without modifying the employed transconductors at transistor level. The proposed method allows decreasing the number of active elements (transconductors) of the filter. Moreover, high linearity is obtained at low and medium frequencies of the pass band. Drawbacks inherent to the use of FGMOS transistors are analyzed, such as large occupied area, high sensitivity to mismatch, or parasitic zeros in transfer functions. The features of the proposed technique are fully exploited in all‐pole G_m‐C filter design, specially implementing unity gain Butterworth transfer functions. Thus, two low‐power second‐order Butterworth G_m‐C filters have been designed and fabricated to compare the proposed FGMOS technique with their equivalent topologies obtained by a conventional design method. Measurement results for a test chip prototype in a 0.5‐µm standard complementary MOS process are presented, confirming the advantages of the proposed FGMOS design technique. Copyright © 2014 John Wiley & Sons, Ltd.     

尖脉冲干扰滤波器设计的关键问题

提出了用磁芯电感器与穿心电容器相结合的尖脉冲干扰滤波器设计方案.论述了磁芯电感器滤波原理,给出并分析了该滤波器设计中的关键问题:采用LC滤波器,其中L为分布电容可以忽略的高磁导率磁芯电感器,C为寄生电感很小的穿心电容器;尖脉冲干扰滤波器放在低压电源滤波电解电容器之后;选择无气隙环形高磁导率铁氧体材料的磁芯;按所提出的计算方法确定线圈匝数和磁芯截面积.该方案能保证所设计的滤波器是经济、实用的.     

Explicit design formulas for current‐mode leap‐frog OTA‐C filters and 300 MHz CMOS seventh‐order linear phase filter

The leap‐frog (LF) configuration is an important structure in analogue filter design. Voltage‐mode LF OTA‐C filters have recently been studied in the literature; however, general explicit formulas do not exist for current‐mode LF OTA‐C filters and there is also need for current‐mode LF‐based OTA‐C structures for realization of arbitrary transmission zeros. Three current‐mode OTA‐C structures are presented, including the basic LF structure and LF filters with an input distributor or an output summer. They can realize all‐pole characteristics and functions with arbitrary transmission zeros. Explicit design formulas are derived directly from these structures for the synthesis of, respectively, all‐pole and arbitrary zero filter characteristics of up to the sixth order. The filter structures are regular and the design formulas are straightforward to use. As an illustrative example, a 300 MHz seventh‐order linear phase low‐pass filter with zeros is presented. The filter is implemented using a fully differential linear operational transconductance amplifier (OTA) based on a source degeneration topology. Simulations in a standard TSMC 0.18µm CMOS process with 2.5 V power supply have shown that the cutoff frequency of the filter ranges from 260 to 320 MHz, group delay ripple is about 4.5% over the whole tuning range, noise of the filter is 420nA/√Hz, dynamic range is 66 dB and power consumption is 200 mW. Copyright © 2008 John Wiley & Sons, Ltd.     

高性能多阶有源带通滤波器设计

本文讲述了高阶有源带通滤波器的组成原理,对正反馈二阶带通滤波器和多阶谐振型带通滤波器作了全面的分析;提出了设计多阶谐振型带通滤波器的方法,并成功的设计出一款高性能的六阶有源带通滤波器。经EDA(电子设计自动化)软件Multisim2001仿真和实际测试,其性能指标完全达到设计要求。     

新型混合型电力滤波器的研究

分析了新型混合型电力滤波器的补偿原理和补偿特性,给出了主电路各个组成部分的设计方法,及有源滤波器控制策略设计。利用MATLAB/Simulink构建了仿真模型,给出了仿真模型中电路的参数,得到了仿真结果。仿真结果表明,这种新型混合型电力滤波器可有效地改善无源滤波器或者单纯有源滤波器的滤波性能,这证明了设计方法的正确性。     

A transfer function approach to harmonic filter design

This article details a new transfer function approach in passive harmonic filter design for industrial and commercial power system applications. Filter placement along with six common filter configurations are presented. Harmonic impedance, voltage division and current division transfer functions are derived and used in a practical filter design procedure that incorporates IEEE-519 distortion limits directly into the design and component specification process. A simple four-step filter design procedure is outlined and used in a variable speed motor drive pumping plant application     

新型串并联混合有源电力滤波器研究

分析了新型基波磁势自平衡串并联混合有源电力滤波器的结构、工作原理。给出了其中无源滤波器的参数设计新方法,全面考虑了设计要求和约束条件。通过采用在电流型和电压型两种典型谐波源负载下分别进行了接近实用化的实验,给出了实验方法和实验结果。实验结果证明了该有源滤波器原理的正确性,并取得良好的补偿特性。     

Tunable Filters Based on Ferroelectrics

A novel microstrip tunable filter design approach is suggested. Coupling factor of a ferroelectric capacitor connected with the microstrip resonators of the filter is considered to make possible the design of the filter keeping constant the pass band width while tuning. Results of the filter characteristic simulation and measurement are presented.