三相PWM整流器IGBT模块故障分析及可靠性提升

从进线电压跌落(VS)角度出发,深入分析了三相六开关电压型脉冲宽度调制(PWM)整流器的IGBT模块的故障原因,并对提高这种整流器的工作可靠性提出了实用有效的方法。

TSW2500发射机的功率模块故障与处理

本文详细介绍了TSW2500型500KW短波发射机功率模块故障的现象、分析和处理,以供相关台站借鉴参考。

电视发射机主控单元的功能及模块保护原理

详细分析了吉兆10kW全固态电视发射机主控单元功能及原理、功放模块的数据采集及保护原理,并简要介绍了发射机的日常维护工作。

Modular solution of dynamic multiple-phased systems

A new modular solution to the state explosion problem caused by the Markov-based modular solution of dynamic multiple-phased systems is proposed. First, the solution makes full use of the static parts of dynamic multiple-phased systems and constructs cross-phase dynamic modules by combining the dynamic modules of phase fault trees. Secondly, the system binary decision diagram （BDD） from a modularized multiple- phased system （MPS）is generated by using variable ordering and BDD operations. The computational formulations of the BDD node event probability are derived for various node links and the system reliability results are figured out. Finally, a hypothetical multiple-phased system is given to demonstrate the advantages of the dynamic modular solution when the Markov state space and the size of the system BDD are reduced.

基于IPv6的智慧校园网建设设计

为了深入研究智慧校园网建设设计中所存在的问题,该文提出了基于IPv6的智慧校园网建设设计。通过分析基于IPv6的智慧校园网建设目标,明确了建设过程中的关键技术,设计了基于IPv6的智慧校园网配置流程以及网络配置部署和故障分析模块、入网身份和信息查询模块,总结了建设设计中的关键环节。在此基础上,进行了智慧校园网性能测试,在压力测试和网络稳定性测试方面证明校园网运行稳定,具有较强的鲁棒性。