ansys 热分析

说明：  目前牵引变压器差动保护原理在某些因素的影响下并不能准确地区分变压器内部故障和外部故障，可能造成保护误动或拒动，危及电气化铁道系统的安全运行。针对这一现状，建立了计及铁芯非线性特性和磁滞效应而又无需铁芯的B－H曲线数据的牵引变压器模型，提出了一种通过参数辩识理论来辩识牵引变压器绕组参数实现牵引变压器微型机保护的方法。该方法能有效地区分内部故障、外部故障和励磁涌流。仿真计算表明了该方法的正确性和可行性。(Traction transformer differential protection principle in the safe operation and can not accurately distinguish between the transformer internal faults and external faults, may be to cause protection mistaken or refuse to move, endangering the electrified railway system under the influence of certain factors. In response to this situation, taking into account the core nonlinear characteristics and hysteresis and without traction transformer core of the B-H curve data model, a the traction transformer winding identification through parameter identification theory parameters to achieve traction transformer microcomputer protection. This method can effectively distinguish internal faults, external faults and magnetizing inrush current. The simulation results show that the correctness and feasibility of the method.)

mapxtreme for java draw rangle

matrix converter-it s an ac to ac converter with unrestriction on frequency,it got the pure sinusoidal and i/p and o/p waveforms

关于485通讯接口若干问题的汇总及相应的解决办法.(About 485 communication interface, a summary of a number of issues and corresponding solutions.)

Cadence Allegro16.5详细安装步骤及破解文件，里面包括pubkey1.30修正破解文件和破解方法。(Cadence Allegro16.5 detailed installation steps and crack file, which includes files and crack crack pubkey1.30 correction methods.)

This a project management plan. The project is virtual.And it is to develope a travel program. We imagine an project to complete the managemrnt work. There are business case ,project charter, scope managemrnt plan, cost management plan and other management plans in this file

GNOME和KDE桌面的管理 包括简单的桌面管理，系统的时间＆日期设置、挂载软盘、光盘和U盘，控制中心，添加删除应用程序，打印机的安装与设置等(GNOME and KDE desktop management Including simple desktop management, system of time and date on the set, floppy diskettes, optical disks and U disk, the control center, add or remove applications, printer installation and setting, etc )

周立功推广的FPGA原理图，有一定的参考价值(ZLG promotion FPGA schematic diagram, there is some reference value)

说明：   sixth dimensional array of compartments

介绍了交流调速及其相关技术的发展现状和发展趋势，以及交流调速系统的主要控制策略。选用工业变频器用异步电机作为研究对象，利用坐标变换理论，分析了异步电机在三相静止坐标系、两相静止与旋转坐标下的电机基本数学模型及其矢量控制原理。(The present situation and development trend of AC speed control and its related technology are introduced, and the main control strategies of AC speed control system are introduced. The basic mathematical model of the motor and its vector control principle are analyzed by using the coordinate transformation theory, which is based on the three-phase stationary coordinate system, two-phase stationary and rotating coordinates.)