双闭环直流电机调速系统设计1[整理版].doc
文本预览下载声明
双闭环直流调速系统的设计
摘,,,,,,,,,,要
转速、电流双闭环控制直流调速系统是性能很好、应用最广的直流调速系统。根据晶闸管的特性,通过调节控制角α大小来调节电压。基于设计题目,直流电动机调速控制器选用了转速、电流双闭环调速控制电路。在设计中调速系统的主电路采用了三相全控桥整流电路来供电。本文首先确定整个设计的方案和框图。然后确定主电路的结构形式和各元部件的设计,同时对其参数的计算,包括整流变压器、晶闸管、电抗器和保护电路的参数计算。接着驱动电路的设计包括触发电路和脉冲变压器的设计。最后,即本文的重点设计直流电动机调速控制器电路,本文采用转速、电流双闭环直流调速系统为对象来设计直流电动机调速控制器。为了实现转速和电流两种负反馈分别起作用,可在系统中设置两个调节器,分别调节转速和电流,即分别引入转速负反馈和电流负反馈,二者之间实行嵌套联接。从闭环结构上看,电流环在里面,称作内环;转速环在外边,称做外环。这就形成了转速、电流双闭环调速系统。先确定其结构形式和设计各元部件,并对其参数的计算,包括给定电压、转速调节器、电流调节器、检测电路、触发电路和稳压电路的参数计算然后最后采用MATLAB/SIMULINK对整个调速系统进行了仿真分析,最后画出了调速控制电路的电气原理图。
关键词:,,,,,双闭环;,,,,,转速调节器;电流调节器
Abstract
Speed,,,,,and,,,,,current,,,,,double,,,,,closed-loop,,,,,D.C,,,,,governor,,,,,system,,,,,is,,,,,a,,,,,D.C,,,,,speed,,,,,controlled,,,,,system,,,,,which,,,,,has,,,,,fairly,,,,,good,,,,,performance,,,,,and,,,,,the,,,,,most,,,,,extensive,,,,,apply.,,,,,Based,,,,,on,,,,,the,,,,,characteristic,,,,,of,,,,,thyristor,,,,,,it,,,,,adjusts,,,,,voltage,,,,,by,,,,,regulating,,,,,the,,,,,trigger,,,,,angle,,,,,“α”,,,,,of,,,,,SCR.,,,,,In,,,,,paper,,,,,,D.C,,,,,motor,,,,,speed,,,,,controller,,,,,is,,,,,using,,,,,of,,,,,current,,,,,and,,,,,speed,,,,,double,,,,,closed-loop,,,,,speed,,,,,control,,,,,circuit.,,,,,The,,,,,energy,,,,,of,,,,,power,,,,,circuit,,,,,is,,,,,supplied,,,,,of,,,,,three-phase,,,,,full-bridge,,,,,controlled,,,,,rectifier.,,,,,Firstly,,,,,,determines,,,,,the,,,,,entire,,,,,design,,,,,the,,,,,plan,,,,,and,,,,,the,,,,,diagram.,,,,,Secondly,,,,,,make,,,,,sure,,,,,the,,,,,structure,,,,,of,,,,,power,,,,,circuit,,,,,and,,,,,the,,,,,design,,,,,of,,,,,elements,,,,,,,,,,,and,,,,,calculate,,,,,the,,,,,element,,,,,parameter,including,,,,,rectifier,,,,,transformer,,,,,,thyristor,,,,,,reactor,,,,,and,,,,,protection,,,,,circuit.,,,,,Thirdly,,,,,,actuates,,,,,the,,,,,electric,,,,,circuit,,,,,the,,,,,design,,,,,including,,,,,to,,,,,trigger,,,,,the,,,,,electric,,,,,circuit,,,,,and,,,,,the,,,,,pulse.Last,,,,,,The,,,,,paper,,,,,mainly,,,,,focuses,,,,,on,,,,,the,,,,,design,,,,,of,,,,,speed,,,,,controller,,,,,cir
显示全部