-
NS-2网络模拟基础与应用
这是国防工业出版社《NS-2网络模拟基础与应用》书中的源代码，全部通过编译，没有错误，是初学NS2者必不可少的资料
- 2020-12-02下载
- 积分：1
-
Agilent的ADS软件快速入门教程（十分全面，共包含3个文件）
Agilent的ADS软件快速入门教程（十分全面，共包含3个文件）
- 2020-12-11下载
- 积分：1
-
用Java和SQL-Server做的学生管理系统
用Java和SQL-Server做的学生管理系统
- 2020-12-01下载
- 积分：1
-
相机标定 matlab 界面
相机标定 matlab GUI界面相机标定 matlab GUI界面相机标定 matlab GUI界面
- 2020-11-29下载
- 积分：1
-
圆柱绕流 附加质量 matlab计算程序
运用势流理论计算圆柱绕流附加质量系数的matlab程序
- 2020-12-11下载
- 积分：1
-
英飞凌IGBT驱动培训资料
在电力电子装置中的一个重要组成部分,输入连接到控制电路的PWM信号输出端，输出连接到装置各IGBT的门极和发射极，将装置中的控制电路产生的数字PWM信号进行隔离传输和电平转换和功率放大,实现控制电路对IGBT进行开通和关断动作的控制，从而实现装置的功率变换功能。InfineontechnologiesIGBT Gate Drive: Power Suppliesa Gate driving voltage for IGBT+15Vturn-on is normally +15VDriver>□1a Gate driving voltage for IGBTOVturn-off can be oV or negativeWith Single Power Supply5V to-15V)a Negative gate driving voltage+15Vhelps IGBt switch off fasterremain in off state but itDriverneeds dual power suppliesOVWhether to use oV or negativegate driving voltage depends15VWith Dual Power Supplieson the requirement on costZH Liang - Al APperformance05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: InterfaceOpto-couplers is commonly used as interfacingdevices for applications where both signaltransmission and potential isolation are requiredOpto-couplers offers reliable isolation between IGBT(high-potential)& micro-controller(low-potential)Opto-couplers has long signal delay(us)and isexpensiveIsolation +VDpCCMicroDrivercontrollerZH Liang - Al AP05Dec2003Page 6for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveStandard configuration: 2 drivers, 2 power supplies, 2 opto-couplersAdvantages: standard, reliableDisadvantages: using opto-couplers, higher system costIsolation +VDDlCC1DriverCC1MicrocontrollerDD2+VCC2DriverCC2ZH Liang - Al AP05Dec2003Page 7for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveIn half-bridge IGBT drive, opto-couplers offer two functions(1)safety isolation &(2) shifting the potential of the gatesignal from uc potential to high-side potentialIf safety isolation between IGBT& micro-controller is notneeded, then"Level Shift" can replace opto-coupling andrealize function(2)OptoHigh-sideHigh-sidecouplerDriverIGBTMicro-Opto-LoW-sideLow-sidecontrollercouplerDriverIGBTZH Liang - Al AP05Dec2003Page 8for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive Level shiftI FeaturesHVc(600V/1200V)沿PULSERFILTERShort Signal DelayPULSE■Cost- effectiveGEN■ No Safety Isolationevel Shift Half-bridge DriverI BenefitHigh-side““°IGBTO Saving Opto-couplersLevel(lower system costShiftMicro● Wider range ofcontrollerLevelLow-side■■■■■直■口m留■Switching FrequencyShiftIGBT(higher flexibility)ZH Liang - Al AP05Dec2003Page 9for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: CLTNEWO CLT-Coreless Transformer (for signal transmissionu Coils(Primary Secondary Side)realized on SiliconO Short Signal Delay (allowing high or low switching frequencyu Lower Cost(compared to 1200V level-shift driver日 Safety IsolationCLT Half-bridge DriverHigh-sideCLT Single DriverIGBTCLTMicro-controllerCLTIGBTMicro-controllerLoW-sideIGBTZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strapBoot-strap circuit includes only a diode and a capacitora In half-bridge drive, the boot-strap circuit can replace the high-sidepower supply and make single-supply operation possibleWhen the low-side IGBT (or FWD)is on, the diode is forwardbiased and the capacitor is charged by the low-side power supplyvia the low-side IGBT and stores the energyWhen the low-side IGBt(and FWD)is OFF, the diode is reversebiased and blocks the dc-bus voltage to protect the low-sidecircuit. Meanwhile, the capacitor supplies energy to the high-sidedriverThe boot-strap capacitance should be high enough to keep thesupply voltage stable Capacitance needed can be calculatedbased on the working conditions and device parametersZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strap circuitConventional2心菲*|■3 high-side power supplies■1|oW- side power supplyUsing boot-strap circuit心体心心●3 diodes& capacitorso 1 low-side power supplyFeaturesa Diode: ultra-fast recoverya Capacitor: general-purposed ITAa Dependent on low-side IGBTBenefitsSaving 3 PS(transformer cost)22ZH Liang - Al AP05Dec2003Reducing wiring connectionPage 12for internal use onlyInfineon Technologies Asia Pacific
- 2020-12-11下载
- 积分：1
-
数字图像处理（冈萨雷斯)+图片+代码+习题答案+书籍
数字图像处理（冈萨雷斯)+图片+代码+习题答案+书籍
- 2020-12-09下载
- 积分：1
-
V-M双闭环不可逆直流调速系统设计（matlab仿真设计）
V-M双闭环不可逆直流调速系统设计 1．技术要求： (1) 该调速系统能进行平滑的速度调节，负载电机不可逆运行，具有较宽的调速范围（D≥10），系统在工作范围内能稳定工作 (2) 系统静特性良好，无静差（静差率s≤2） (3) 动态性能指标：转速超调量δn＜8%，电流超调量δi＜5%，动态速降Δn≤8-10%，调速系统的过渡过程时间（调节时间）ts≤1s (4) 系统在5%负载以上变化的运行范围内电流连续 (5) 调速系统中设置有过电压、过电流等保护，并且有制动措施2．设计内容：(1) 根据题目的技术要求，分析论证并确定主电路的结构型式和闭环调速系统的组成，画出系统组成的原理框
- 2020-12-10下载
- 积分：1
-
线性调频LFM脉冲压缩雷达仿真
线性调频LFM脉冲压缩雷达仿真,线性调频脉冲压缩的Matlab程序,Word说明,运行结果
- 2021-05-06下载
- 积分：1
-
智方奶茶店收银管理系统
智方奶茶店收银管理系统概括介绍】专业的易用好用够用的奶茶店会员收银管理系统【基本介绍】智方奶茶店收银管理系统(奶茶店会员收银管理软件,奶茶店会员管理软件，奶茶店管理软件，奶茶店触摸屏收银管理系统）是专业针对奶茶店,茶吧经营过程繁琐、出货量大等特点， 将繁杂手工操作电脑化，快速收银销售处理，既可节省人力，又能提高工作效率，降低了出错的机率，杜绝了管理漏洞，是奶茶店管理者最适合的信息化管理软件。【软件功能】智方奶茶店管理软件功能包括了基本信息、员工信息、供应商信息、客户信息、奶茶类型、营业员权限等；会员管理包括会员登记、售卡、会员查询、短信回访等，支持积分、储值、折扣；触摸屏与键盘操作均可，操作简
- 2020-11-04下载
- 积分：1
