Artificial bee colony based algorithm for maximum power point tracking (MPPT) for PV systems operating under partial shaded conditions

Artificial bee colony (ABC) algorithm has several characteristics that make it more attractive than other bio-inspired methods. Particularly, it is simple, it uses fewer control parameters and its convergence is independent of the initial conditions. In this paper, a novel artificial bee colony based maximum power point tracking algorithm (MPPT) is proposed. The developed algorithm, does not allow only overcoming the common drawback of the conventional MPPT methods, but it gives a simple and a robust MPPT scheme. A co-simulation methodology, combining Matlab/Simulink™ and Cadence/Pspice™, is used to verify the effectiveness of the proposed method and compare its performance, under dynamic weather conditions, with that of the Particle Swarm Optimization (PSO) based MPPT algorithm. Moreover, a laboratory setup has been realized and used to experimentally validate the proposed ABC-based MPPT algorithm. Simulation and experimental results have shown the satisfactory performance of the proposed approach.     

基于Pspice的电路仿真故障注入的方法研究

为克服在测试性验证与评估过程中手动进行故障注入时费时的问题,对Pspice电路仿真中的故障注入的方法进行研究,提出了一种仿真电路故障注入自动化的方法,使用LL(k)语法分析技术开发了Pspice解析器,用Hook技术对Pspice进行监控,实现了电路的自动故障注入和仿真。经验证提出的解决方法,有助于提高在测试性验证与评估过程中故障注入的效率。     

一种TEC温度控制模块的电路设计与仿真

为满足半导体激光器温度控制的要求,采用单个lm224放大器及若干电子元器件设计了一种高精度TEC温度控制电路,介绍了激光器温度控制模块的系统组成及工作原理,详细分析了TEC控制电路结构,采用pspice软件对电路做了仿真分析,建立了仿真模型并且介绍了仿真方法,仿真结果及实际测试表明此模块能够保证激光器稳定工作,控制精度为±0.1℃.该模块易于集成,工作温度范围宽且成本低廉,适用于多数半导体激光器中使用.     

Design and Simulation of Solid State Pulser with Fast Rise Time and Double-exponential Waveform

Voltage pulses with fast rise time can be obtained from Marx circuits based on avalanche transistors. In this research, the ZETEX avalanche transistors are used as the switches in a Marx circuit to generate stable voltage pulses with double-exponential waveform and fast rise time. By using these transistors, the circuit is able to generate higher pulsed voltage with fewer stages. A three stages and a ten stages Marx circuit, as well as their triggering circuits, are designed. The two Marx circuits are also tested by simulations based on the Pspice code and by experiments, results of which are consistent with each other. With the ten stages Marx circuit, we obtain positive and negative pulses with the rise time of about 1.5 ns, the amplitude above 1 100 V, and the pulse width below 5 ns. It is proved that the proposed Marx circuit equipped with avalanche transistors could be an effective kind of solid-state pulse generator.     

基于功率运算放大器的恒流源技术研究

恒流源在现代工农业及科研生产的运用中正朝着体积小、精度高、稳定性好、使用灵活的方向发展。文章就压控恒流源的技术和原理进行了分析,提出了使用功率运算放大器获得高稳定恒流源的技术方案,并使用Pspice进行了较为详细的模拟和理论分析。     

Pspice电路仿真软件在《电子技术基础》教学中的应用

该文介绍了Pspice软件的电路仿真功能及其在电子技术基础教学中的应用,结合教学中的具体例子,说明了进行电路仿真的过程。     

VLSI and SPICE modeling of ALU

The Arithmetic and Logic Unit （ALU） is a combination circuit that performs a number of arithmetic and logical operations within a microprocessor. The demand for faster and compact ALUs makes it desirable to test the ALU in conjunction with pre-design parts prior to manufacture. This may be accomplished in a process using CAD and SPICE simulation software. Our purpose is to realize a method for importing a layout drawn in Tanner L-edit and simulated in T-Spice into PSpice which is referred to as software talking. To do so we use an eight-function instruction set called Complimentary Metal Oxide Semiconductor Arithmetic and Logic Unit （CMOS ALU） which is laid out in Tanner L-edit and produces an extracted net-list which is simulated in T-Spice. An ALU equivalent design is then modeled in PSpice for further testing with pre-manufactured parts of the PSpice library.     

RTD-HBT高速低功耗环形振荡器的分析

RTD与HBT是高频高速器件,共振隧穿二极管-异质结晶体管(RTD-HBT)环形振荡器有很好的应用前景.详细介绍了RTD-HBT高速低功耗环形振荡器的工作原理,建立了RTD,HBT及RTD-HBT环形振荡器的等效电路模型,并对RTD-HBT环形振荡器用Pspice模拟软件进行了电路模拟.模拟结果与预期结果一致,有助于指导该电路的设计.     

多级磁压缩脉冲电源

阐述用于EUV光刻技术的脉冲功率电源的设计。该脉冲电源由充电电容组,半导体开关(IGBT),脉冲变压器和四级磁压缩回路组成。解释磁开关的工作原理,提供各关键元件的设计参数。根据磁性材料的物理特性参数,利用Pspice仿真软件建立磁芯模型,构建磁开关和仿真电路,对各级电压和电流波形进行分析,进而设计调整各级磁开关的参数。实验结果表明,该脉冲电源输出峰值为30 kV,上升沿为<85 ns,脉冲宽度<100 ns的脉冲信号。     

TFT LCD中Γ校正的系统设计与实现

以分辨率240RGB×320的小尺寸彩屏TFT LCD为研究对象,针对驱动系统传送的视频数据不能正确反映亮度在大脑中形成的感觉问题,进行Γ校正电路设计。借助ORCAD PSPICE仿真软件,并采用TSMC 0.25μmMixed-Signal Salicide工艺完成电路仿真设计。仿真结果表明:系统设计的电路很好地实现了幅度调节、斜率调节、以及微调节功能。