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Description: 一个直流信号源的全部开发资料,包括原理图,PCB,单片机程序-a DC source of all development information, including schematics, PCB, the 8031 procedure
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Size: 152576 |
Author: 朱赪 |
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Description: 在大功率DC/DC开关电源中,为了获得更大的功率，特别是为了得到大电流时，经常采用N个单元并联的方法。多个单元并联具有高可靠性，并能实现电路模块标准化等优点。然而在并联中遇到的主要问题就是电流不均，特别在加重负载时，会引起较为严重的后果。普通的均流方法是采取独立的PWM控制器的各个模块，通过电流采样反馈到PWM控制器的引脚FB或者引脚COMP，即反馈运放的输入或者输出脚来调节输出电压，从而达到均流的目的。显然，电流采样是一个关键问题：用电阻采样，损耗比较大，电流放大后畸变比较大；用电流传感器成本高；用电流互感器采样不是很方便，同时会使电流失真。本文提出了一种新型的、方便的、无损的电流采样方法，并在这种电流检测方法的基础上实现了并联系统的均流。 -in High Power DC/DC switching power supply, in order to gain more power, in particular in order to obtain the current, frequently using N units parallel method. Parallel number of modules with high reliability, and the circuit module can achieve the advantages of standardization. However, in parallel encountered in the current main problem is uneven, particularly in the heavier load, it will cause more serious consequences. The general flow is to have an independent PWM controller modules, Current sampling through feedback to the PWM controller pin FB pin or COMP. that feedback operational amplifier input or output pin to adjust the output voltage, thereby achieving both flow purposes. Clearly, the current sampling is a key question : sampling resistor, loss comparison, the amplifier dis
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Size: 12288 |
Author: duanshaochun |
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Description: 中频感应加热以其加热效率高、速度快，可控性好及易于实现机械化、自动化等优点，已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计，设计了相应的硬件电路，研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件，可工作在10 Hz～10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断，实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能，具有宽的可调工作频率，死区时间可调，具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度（500ns），光隔离，故障状态反馈，可配置自动复位、自动关闭等功能，所以选择其作为IGBT的驱动。
对原理样机的调试结果表明，所完成的设计实现了设计任务规定的基本功能。此外，为了满足不同器件对功率需要的要求，设计了功率可调。这部分超出了设计任务书规定的任务。-induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz- 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW
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Size: 5120 |
Author: wq57 |
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Description: synopsys dc 中文ppt教材，比较详细!
可是SYnopsys公司培训的教材!难得的好东西!对学习Design compiler的人非常有帮助-synopsys dc Chinese ppt materials, more detail! But SYnopsys corporate training materials. rare good things! Design study of c ompiler are very helpful
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Size: 797696 |
Author: 张华 |
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Description: AC-DC Converter using a three-phase three-level
PWM Voltage-sourced Converter -AC-DC Converter using a three-phase three-level PWM Voltage-sourced Converter
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Size: 18432 |
Author: hb |
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Description: 电 流： 电荷的定向移动叫做电流。电路中，电流常用I表示。电流分直流和交流两种。电流的大小和方向不随时间变化的叫做直流。电流的大小和方向随时间变化的叫做交流。电流的单位是安（A），也常用毫安（mA)或者微安(uA)做单位。1A=1000mA,1mA=1000uA。
电流可以用电流表测量。测量的时候，把电流表串联在电路中，要选择电流表指针接近满偏转的量程。这样可以防止电流过大而损坏电流表。-Current: Charge-directional movement is called current. Circuit, the current commonly used I said. DC and AC current at the two. The size and direction of current does not change over time is called DC. Current size and direction of change over time is called the exchange. Current unit is an (A), also commonly used milliamps (mA) or microamps (uA) units do. 1A = 1000mA, 1mA = 1000uA. Ammeter measuring current can be used. Measurement when the ammeter in series in the circuit, the ammeter pointer to select the range close to full tilt. This prevents excessive damage to current ammeter.
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Size: 295936 |
Author: rubest |
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Description: 正弦波逆变器：介绍了采用BoostPWMDC/DC变换器的正弦波逆变器的工作原理与控制方式，这是一种新型的正弦波逆变器-Sine wave inverter: This paper introduces BoostPWMDC/DC converter sine wave inverter and control of the working principle of the way, this is a new kind of sine wave inverter
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Size: 254976 |
Author: 陈生 |
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Description: COMMANDE D un convertiseur AC/DC 脿 deux niveaux par hysteresis
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Size: 11264 |
Author: paradox |
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Description: DC load flow is a method to estimate power flows through lines on AC power systems. It uses a modified version of AC load flow using a linearized version of it. Programming is done in Matlab.
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Size: 1024 |
Author: mmbaskr |
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Description: DSP控制AC DC AC电机中的使用。很全面很强大非常好-Direct Power and Torque Control
of AC/DC/AC Converter-Fed Induction
Motor Drives
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Size: 7272448 |
Author: sandy |
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Description: An e-book about building a 10Kw inverter. Designed by Texas University. Topology, design schematic , test results everything needed is in the ebook.
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Size: 4004864 |
Author: sudip |
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Description: 电力电子元件模拟同步发电机，实现AC/DC，DC/AC，利用计算法PWM，PID控制器，跟据效果比较理想-Synchronous generator simulation of power electronic components, to achieve AC/DC, DC/AC, using computational method PWM, PID controller, with far more satisfactory results
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Size: 17408 |
Author: Jerry Xu |
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Description: This to certify that the sis entitled, “Study Of Wind Turbine Driven
Induction Generator Using AC/DC/AC converter” submitted by Ashish Kumar
Agrawal, Bhaskar Munshi and Srikant Kayal in partial fulfillment of the
requirements for the award of Bachelor of Technology Degree in Electrical
Engineering at the National Institute of Technology, Rourkela (Deemed
University) is an authentic work carried out by them under my supervision.
And to the best of my knowledge, the matter embodied in the thesis has not been
submitted to any other University/Institute for the award of any Degree or
Diploma.-This is to certify that the thesis entitled, “Study Of Wind Turbine Driven
Induction Generator Using AC/DC/AC converter” submitted by Ashish Kumar
Agrawal, Bhaskar Munshi and Srikant Kayal in partial fulfillment of the
requirements for the award of Bachelor of Technology Degree in Electrical
Engineering at the National Institute of Technology, Rourkela (Deemed
University) is an authentic work carried out by them under my supervision.
And to the best of my knowledge, the matter embodied in the thesis has not been
submitted to any other University/Institute for the award of any Degree or
Diploma.
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Size: 686080 |
Author: proust |
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Description: DC-AC unipolar bipolar converter
it work on MATLAB 2013a simulink simpower-system
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Size: 80896 |
Author: Yune |
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Description: DC/AC Pure Sine Wave Inverter
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Size: 5386240 |
Author: as |
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Description: 电力电子中DC-AC逆变电路在simulink中的仿真模型-Power electronics DC-AC inverter circuit simulation model in simulink
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Size: 164864 |
Author: 龚旸 |
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Description: 用于全桥DC/AC变换器和半桥DC/AC变换器的控制部分(DC/AC Half-Bridge Inverter
DC/AC Full-Bridge Inverter)
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Size: 27648 |
Author: 红肿的小黄瓜
|
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Description: 直流转交流的逆变器模型，适合初学者使用。已测试，可正常运行(DC/AC inverter. already tested, it works well)
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Size: 20480 |
Author: mastertuzi |
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Description: This example shows the operation of an AC-DC-AC converter.
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Size: 27648 |
Author: mohsensafar |
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Description: This is a conversor DC-AC with inversors
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Size: 8192 |
Author: José |
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