-
现代整流器技术——有源功率因数校正技术 徐德鸿
《现代整流器技术:有源功率因数校正技术》系统地介绍了功率因数校正电路的原理和应用技术。书中详细介绍了单相功率因数校正电路原理及控制方法(包括CCM单相Boost型功率因数校正电路、CRM单相Boost型功率因数校正电路、交错并联功率因数校正电路、无桥型功率因数校正电路、低频开关功率因数校正电路)和三相功率因数校正电路原理及控制(重点介绍了电压型和电流型三相功率因数校正电路数学模型、锁相、PWM、控制技术)。此外,《现代整流器技术:有源功率因数校正技术》还介绍了软开关功率因数校正电路的原理,包括单相、三相有源箝位零电压开关功率因数校正电路。 《现代整流器技术:有源功率因数校正技术》可作为电气
- 2020-07-04下载
- 积分:1
-
nco的simulink仿真
nco的simulink仿真,可观察其产生波形及频谱
- 2020-12-04下载
- 积分:1
-
java web学习入门的失物招领系统源码(含数据库)
基于JAVA EE入门的失物招领系统使用的非常基础的J2EE技术,新手入门可参考首页、个人中心、发布物品、申领物品、发布与申领管理、搜索查询、退出等模块 在首页模块实现了模糊查询、分类查询等功能 用户管理模块实现了登录、注册、修改、查看信息等功能 个人中心模块实现了查看、删除、修改发布物品、处理申领等功能
- 2019-12-29下载
- 积分:1
-
某机械厂降压变电所电气设计
一、负荷计算和无功功率计算及补偿二、变电所位置和形式的选择 三、变电所主变压器台数和容量及主接线方案的选择四、短路电流的计算五、变电所一次设备的选择与校验六、变电所高、低压线路的选择七、变电所二次回路方案选择及继电保护的整定八、防雷和接地装置的确定九、心得和体会 十、附录参考文献十一、附图高压电气主接线.dwg低压电气主接线.dwg厂区电缆走向图.dwg变电所平面布置图.dwg
- 2020-12-11下载
- 积分:1
-
基于STM32的俄罗斯方块
基于STM32触摸屏的俄罗斯方块设计 可完成俄罗斯方块的所有基本功能
- 2021-05-07下载
- 积分:1
-
Simplorer内部培训资料
Simplorer V9的培训资料,非常详细,一共407页的PDF,看完这个PDF,相信你已经是simplorer高手了。Conventions Used in this GuideGetting HelpAnsoft Technical SupportHelp MenuContext-Sensitive Help1. IntroductionOverview of the Simplorer Interface .........1-32. Creating a New ProjectAbout the three-Phase rectifier2-2Expected Results2-3Using Simplorer to Create and Improve the Design2-4Creating the new project2-5Add the New project2-5Rename the designAdd Design Notes(Optional)Save the New project2-73. Create the rectifier modelCreate the Three-Phase rectifier Schematic. 3-2Choosing, Placing, and Arranging Components onthe schematic she.3-3Connecting the Components3-8Defining Component Properties3-9Property Displays for Components3-13Specifying simulation Outputs.3-16Defining Solution Options and Analysis Parameters3-18Starting an Analysis3-19Plotting Rectifier Model Simulation Results3-204. Hysteresis Current-Controlled DC-Motor Start-UpModify the Rectifier Model Design.4-2Deleting the Resistive/Inductive Load,4-3Saving the sheet with a New Name4-3Place and Arrange the New Components4-4Connect the New Components.,,,,,,4-5Defining dc Machine valuesDefining Mechanical Load4-7Freewheeling Diode4-8Chopper Transistor4-8Controller Modeling using block elements..4-9Modifying Report Elements...4-11Display Diode CharacteristicDefining Simulation Parameters.4-13Starting Simulation(Block Components.4-13Simulation Results(Block Components)... 4-14Controller Modeling Using State Graph Components4-15Connecting the State Graph Components4-16Defining Properties of State Graph Components 4-Using Name References4-19Deactivating Components on the sheet4-19Starting Simulation(State Graph)...4-21Simulation Results(State Graph)4-225. Current and Speed Controlled Dc MotorModify the State graph design5-2Deleting the State GraphSaving the sheet with a New namePlacing and Arranging the New Block Componentson the sheet5-4Connecting the New ComponentsDefining Mechanical Load (Block)Defining the pl controller.........5-8Starting Simulation..5-12Adding a Rectangular Plot(Pl Controller)... 5-13Adjusting Plot Properties.5-14Checking the block Sequence..5-16Using Automatic Block Sorting5-16Using Manual Block Sorting5-16Rerun the Simulation(PI Controller)Simulation Results(PI Controller)5-176. Using VHDL-AMS Components forModelingVHDL-AMS Components,,,,.6-2Modify the pl controller Design.6-3Save the project with a new name6-3Delete the dc Machine component6-4Placing and Arranging the New VHDL-AMs Components on the sheet6-4Connecting the New VHDL-AMS Components 6-4Defining VHDL-AMS DC Machine values6-4Defining Connections for Machine Current..6-5Defining Simulation ParametersAnalyze and Display Simulation Results(VHDLAMS6-67. Variants of PWM ModelingPWM Modeling Overview7-2Create a New Project for the pWm models ..7-3Setting Initial ConditionsPWM Modeling Using EquationsDefining Simulation Parameters7-4Displaying Simulation Results with Reports 7-4Simulation results 7-6PWM Modeling with Equations and Time Function7-6PWM Modeling with State Graph Components 7-8Place and arrange the components on the sheet7-8Define Component properties翻国7-9PWM Modeling with Block Diagram Components 7Placing and Arranging the Components on theSheet7-118. Importing Legacy SchematicsTranslating a Legacy Schematic..8-2Importing the legacy Schematic8-2Starting an analysis...,,8-6Plotting Simulation Results8-7Estimated time tooplete this guide45 minutes
- 2020-11-27下载
- 积分:1
-
超声波测距PCB图
【实例简介】原创,基于单片机的超声波测距PCB图,本人自制,硬件已经经过测试,可以直接拿去PCB工厂印制,系统工作正常,上传PCB图供大家参考
- 2021-11-01 00:34:00下载
- 积分:1
-
Snake 模型快速算法实现 C#源码
自1987年Kass提出Snakes模型以来,各种基于主动轮廓线的图像分割理解和识别方法如雨后春笋般蓬勃发展起来。Snakes模型的基本思想很简单,它以构成一定形状的一些控制点为模板(轮廓线),通过模板自身的弹性形变,与图像局部特征相匹配达到调和,即某种能量函数极小化,完成对图像的分割。再通过对模板的进一步分析而实现图像的理解和识别。
- 2020-12-10下载
- 积分:1
-
Dijkstra算法的流程图
Dijkstra算法的流程图,具体的算法的实现,以及该算法的文档。
- 2021-05-06下载
- 积分:1
-
数据安全解决方案
数据的安全技术主要建立在保密性(Confidentiality)、完整性(Integrity)和可用性(Availability)三个安全原则基础之上。实际上,数据面临着严重的威胁(如下图所示),主要受到通信因素、存储因素、身份认证、访问控制、数据发布、审计因素、制度因素和人员问题八大因素,具体因素内容在图2-1中详细的列举出来。通信威胁指数据在网络通信和传输过程中所面临的威胁因素,主要包括数据截获算改、盗窃和监听、蠕虫和拒绝服务攻击。
- 2020-12-07下载
- 积分:1