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ProjExtend
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)
- 2007-04-19 11:31:35下载
- 积分:1
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hack-code
精通黑客编程光盘代码,适用于新手学习,不要用于非法用途,谢谢合作(CD proficient hackers programming code for beginners to learn, not for illegal purposes, thank you)
- 2011-11-09 13:36:49下载
- 积分:1
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DDOSSCOMtermmO
1.DOS下使用,功能类似于WINDOWS的超级终端 2.支持COM1,COM2 3..支持波特率2400,4800,96600(缺省),19200,38400,57600,115200 4.支持Xmodem文件传输协议,,Asm,Com Port 可直接使用。
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- 2012-09-15 11:57:07下载
- 积分:1
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NetWork
这个是关于网络工作室的源代码,主要是用于网络编程的初级参考,希望能给刚入网络编程的朋友提供帮助(This is a studio on the network)
- 2007-09-03 18:27:40下载
- 积分:1
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GetIPDlg
通过注册表获取计算机网络信息,如IP、掩码、计算机名和DNS信息(through access to the registry computer network information, such as IP, mask, computers and DNS information)
- 2007-05-15 11:55:05下载
- 积分:1
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shortest-path
通信网络的架设问题 若要在n(≥10)个城市之间建设通信网络,只需要架设n-1条线路即可(With the Dijksra algorithm to network G from source points to the rest of the vertices of the shortest path)
- 2014-01-11 23:32:27下载
- 积分:1
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netspeedspyer
Windows的网络流量速度检测。使用MFC作为开发平台。(A net speed spyer using MFC platform .)
- 2012-02-21 15:20:48下载
- 积分:1
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resiveDlg
c++聊天软件客户端代码,可以实现和双方互相聊天,必须客户端后启动(c++ chat software client code)
- 2013-08-11 19:10:03下载
- 积分:1
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BOOKSTORE
网络书店,利用C++编程和MySQL编程,做一个简易的网络书店。(Internet bookstores, the use of C++ programming and MySQL programming, the network to do a simple book.)
- 2009-04-03 13:21:47下载
- 积分:1
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sssssss
程序记录并显示了数据报从源端机器传送到目标机器的过程中所经过的路由器的IP地址,并且记录了数据报到达每个路由器所需要的时间。认真观察到达每个路由器的时间有什么区别,从而熟练掌握traceroute的工作原理和ICMP报文协议。 (The program records and displays the IP addresses of routers through which the datagram sent from the source client machine to the target machine , and the recording of the data packets arrive at the time required by each router . )
- 2013-05-21 10:00:17下载
- 积分:1