Multisim在电力电子电路仿真中的应用

随着电力电子技术的不断发展，电力电子电路在直流电动机控制，可变直流电源、高压直流输电、电化学加工处理方面得到广泛的应用。本文基于电子电路仿真软件Multisim7.0，建立了单相桥式全控电路、三相桥式不控整流电路以及Boost电路的动态仿真模型，给出了仿真实例，验证了模型的正确性，并证明了该模型具有快捷、灵活、方便、直观等一系列优点，从而为电力电子电路的教学及设计提供了一个有效的辅助工具。     

Multisim10在电力电子电路仿真中的应用

电力电子电路的计算机仿真可辅助进行电路及其控制系统的分析和定量计算,具有方便、高效、灵活等一系列优点。在Multisim 10仿真软件的虚拟工作平台中,完成了三相桥式全控整流电路的设计和仿真分析,通过实例证明了Multisim 10是进行电力电子电路仿真的有效工具。     

基于Multisim的电力电子电路仿真技术

介绍了Multisim软件的功能和特点，提出运用Multisim实现电力电子电路的仿真方法。通过3个电力电子原理性电路的仿真实例阐述了仿真电路建立、元器件的选用和仿真参数的设置方法等关键问题，同时得到了正确的仿真结果。     

基于PSCAD的直流斩波电路的仿真

现代电力电子技术其理论性和实践性较强,电路和波形图多且复杂。在电磁暂态分析软件PSCAD中建立Buck-chopper电路的仿真模型,在此基础上对直流斩波电路进行了较详细的仿真分析。仿真波形与常规分析方法得到的结果一致,证实了PSCAD软件能够在电力电子技术仿真和研究中具有较好的应用价值。     

Matlab在二阶电路动态分析中的应用

二阶电路的动态分析是＂电路分析＂课程中的基本教学内容。本文针对二阶动态电路抽象难学的特点,提出了理论分析和软件仿真相结合的教学方法。在理论分析的基础上,应用Matlab仿真软件对二阶电路进行建模仿真,通过改变电路参数观察其对电路动态过程的影响。将Matlab仿真软件引入电路分析课程教学,即可加深学生对课程中抽象理论的认识和理解,也可锻炼学生分析问题和解决问题的能力。     

Matlab在电力电子整流电路仿真中的应用

随着电力电子技术的不断发展，可控整流电路在直流电动机控制、可变直流电源、高压直流输电、电化学加工处理方面得到广泛的应用。本文基于Matlab语言，建立了单相桥式可控整流电路、三相桥式可控整流电路以及大功率双反星型整流电路的动态仿真模型，给出了仿真实例，验证了模型的正确性，并证明了该模型具有快捷、灵活、方便、直观等一系列优点，从而为电力电子电路的教学及设计提供了一个有效的辅助工具。     

IsSpice仿真软件在电力电子技术中的应用

本文简要介绍了IsSpice仿真软件的特点、功能和作用，叙述了IsSpice仿真技术在电力电子技术教学中的应用，并对电力电子技术中三相半被整流电路进行了仿真和分析。该软件方便、简单，调节容易，可视性好，可提高学生对学习电力电子的兴趣，加深对该课程的理解。     

直流斩波电路的Matlab/Simulink仿真研究

电力电子技术是工科院校电气信息类专业学生必修的一门专业基础课程,其理论性和实践性较强,电路和波形图多且复杂,通常仿真技术在电力电子技术领域应用不多.应用Matlab的可视化仿真工具Simulink建立了Buck电路的仿真模型,在此基础上对Buck电路及Boost-Buck电路进行了较详细的仿真分析.结果表明,仿真波形与常规分析方法得到的结果具有一致性,证实了Matlab软件在电力电子技术教学和研究中具有较好的应用价值.     

三相全控整流感性负载谐波与功率因数的仿真

通过对Matlab的Simulink建立三相全控整流的仿真模型进行动态仿真.阻感负载整流电路作为电力电子装置输入端电路之一,是电力系统中的主要谐波源.从工程实际出发,忽略换相过程和直流侧电流脉动,对阻感负载三相桥式全控整流电路的功率因数和谐波情况进行动态仿真.仿真结果证实了模型的正确性,可以看出仿真使复杂的计算变得简单...     

基于Labview的电力电子负载的动态监测

基于NI公司的Labview软件开发平台，借助于Flash软件优越的动画显示功能，针对相控电力电子电路常用负载——灯泡负载和直流电动机负载，以三相整流电路为例完成了随着控制角α的变化，电力电子负载动态监测软件的开发。该软件经调试，界面友好、美观、使用方便，特别是其灯光、声音和旋转的动画显示效果佳。对电力电子技术的教学和研究工作有指导意义。     

MATLAB在电力电子电路仿真中的应用

MATLAB软件是当今控制系统的设计与仿真中重要的工具软件。讨论了交直流控制系统中利用Matlab／Simulink软件平台进行仿真研究的方法,具体给出了基于MATLAB软件,对直流调速系统中的转速负反馈调速系统的起动过程及其在各类扰动作用下系统的动态过程进行了仿真分析,说明了MATLAB在电力电子电路仿真中的应用;详细给出了在Matlab软件平台下如何搭建控制模型以及电力电子电路中常用的整流桥、晶闸管、交直流电动机的仿真方法。实践证明,应用MATLAB实现对电力电子电路的仿真方法简便,易于实现。     

基于小信号S参数的功率放大器设计

文章利用小信号S参数和静态电流-电压曲线对功率放大器进行设计,首先把功率管的小信号S参数制成S2P文件,然后将其导入ADS软件中,在ADS中搭建功率管的输入输出端口匹配电路,按照最大增益目标对整个电路进行优化,最后完成电路的设计。     

基于Multisim的4种典型功放电路仿真研究

为了准确直观的理解4种典型功率放大电路的电路特性,文中研究了基于Multisim的功率放大电路的仿真测试。首先介绍了Multisim软件常用的分析方法。其次通过Multisim平台建立了4种功放电路的仿真模型,对其进行了瞬态分析和傅里叶分析。仿真结果表明,在基本型功放电路前端串接运算放大器可以提高电路稳定性,减小电路的交越失真。     

Introduction of a new technique for simultaneous reduction of the delay and leakage current in digital circuits

By the reduction in the size of transistors and the development of submicron technology, as well as the construction of more integrated circuits on chips, leakage power has become one of the main concerns of electronic circuit designers. In this article, we first review techniques presented in recent years to reduce leakage power and then present a new technique based on the gate-level body biasing technique and the multi-threshold CMOS technique to minimize leakage power in digital circuits. Afterward, we develop another new method by improving the first proposed technique to achieve higher efficiency and simultaneously reduce leakage power and propagation delay in digital circuits. In the proposed technique, we use two dynamic threshold MOSFET transistors to reduce leakage current. In this paper, the body biasing generator structure is applied to reduce propagation delay. The proposed technique has been successfully validated and verified by post-layout simulation with Cadence Virtuoso based on the 32 nm process technology.We evaluate the efficiency of the proposed techniques by examining factors including power, delay, area, and the power delay product. The simulation results using HSPICE software and performance analysis to process corner variations based on the 32 nm process technology show that the proposed technique, in addition to having proper performance in different corners of the technology, significantly reduces leakage power and propagation delay in logic CMOS circuits. In general, the proposed technique has a very successful performance compared to previous techniques.     

Analysis of ATPMOS configurations-based 4 × 1 multiplexer with estimation of power and delay

In this article, two consecutive augmenting transistor P-channel metal oxide semiconductor (ATPMOS) configurations are proposed. These two ATPMOS configurations (ST ATPMOS and DT ATPMOS) are implemented on a 4 × 1 (multiplexer) mux circuit. Leakage power dissipation, dynamic power dissipation and delay performance parameters are calculated for both (ST ATPMOS and DT ATPMOS) ATPMOS configurations-based 4 × 1 mux circuits at different values of transistor’s width. Due to simulation, it is realised that the leakage power dissipation and dynamic power dissipation are reduced and delay is improved (delay is reduced) in the DT ATPMOS configuration-based mux circuit compared to the ST ATPMOS configuration-based mux circuit. The whole simulation process was carried out in 45-nm technology. The circuits were operated at 1-V power supply.     

0.45 THz次谐波混频器优化设计

采用ACST公司准垂直结构混频二极管对0.45 THz次谐波混频器进行优化设计。提出一种电路拓扑结构,使得电路结构紧凑且易于匹配。在对二极管结构分析与建模的基础上,利用射频电路仿真软件ADS及电磁场仿真软件HFSS对混频器电路及结构进行整体优化设计,得到理想情况下单边带变频损耗最小值6 dB,三分贝带宽大于30 GHz,所需本振驱动功率3.8 mW。仿真结果表明,该电路拓扑结构适用于采用反向并联肖特基二极管对实现次谐波混频器设计。     

Fast thermal profiling of power semiconductor devices using Fourier techniques

Accurate prediction of temperature variation of power semiconductor devices in power electronic circuits is important to obtain optimum designs and estimate reliability levels. Temperature estimation of power electronic devices has generally been performed using transient thermal equivalent circuits. In the presence of varying load cycles, it has been typical to resort to a time-domain electrical simulation tool such as P-Spice or SABER to obtain a time series of the temperature profiles. However, for complex and periodic load cycles, time-series simulation is time consuming. In this paper, a fast Fourier analysis-based approach is presented for obtaining temperature profiles for power semiconductors. The model can be implemented readily into a spreadsheet or simple mathematical algebraic calculation software. The technique can be used for predicting lifetime and reliability level of power circuits easily. Details of the analytical approach and illustrative examples are presented in this paper.     

Monitoring Power Dissipation for Fault Detection

In this paper, we suggest that the dynamic power dissipation of acircuit can be used for fault detection. Even those faults which do notaffect static power dissipation can be detected by monitoring dynamic powerdissipation. We discuss how stuck-at, stuck-open, and redundant faults maybe detected by monitoring dynamic power dissipation. In many cases, theFourier spectra of the supply currents in the good and faulty circuits willalso be very different. Further, specific tests can be applied so as toimprove fault coverage. Power monitoring is verified using simulation, andalso experimentally, for example circuits.     

Recognition of dynamic patterns in DC-DC switching converters

Techniques for analyzing the dynamic patterns of power flow in high-frequency DC-DC switching power converters are developed. Emphasis is placed on exploring methods for developing reduced-order instantaneous and averaged models. of power electronic circuits for simulation, analysis, and control design. Tools from selective modal analysis are used to develop the dynamic pattern recognition algorithm that facilitates the classification of circuit modules