转速、电流双闭环直流调速系统设计

文档编号:JD639  附任务书,答辩PPT,原理图,文档字数:19548,页数:61

摘  要

本设计是电枢可逆，转速、电流双闭环直流调压调速系统。磁场回路采用桥式整流电路，电枢回路采用可控硅三相桥在式整流调压系统，采用接触器电流切换以实现可逆运行。系统应用工程方法设计的转速、电流两个调节器均采用PI结构，以实现稳态无静差，同时在转速调节器上引入转速微分负反馈，从而达到了抑制转速超调的目的。最后用MATLAB/SIMULINK对系统进行了仿真分析与校正，为系统的参数进一步优化和现场调试奠定了基础。

关键词：双闭环直流调速系统；电枢可逆； MATLAB/SIMULINK仿真

Abstract
The design is that armature is reversible , rotational speed and current the two pressure regulating speed adjustments of closed circuit of direct current system. the loop of magnetic field adopt bridge-type rectification circuit, armature loop adopt may control silicon three-phase bridge-type rectification pressure regulating system, switch with contactor current with realize reversible operation. this systematic application project design two current regulators and the rotational speed of method design adopt PI structure , with realize stable state have no static difference; at the same time lead into the differential negative feedback of rotational speed on the regulator of rotational speed, have so reached restrain the purpose of the super tune of rotational speed. use MATLAB/SIMULINK finally emulate for system analyse and rectify , is systematic parameter further optimization and the debug on-the-spot have established foundation.

Key words: the two systems of closed circuit of direct current of speed adjustment; armature reversible; the emulation of MATLAB/SIMULINK

目  录

摘要....................................................................Ⅰ
Abstract.................................................................Ⅱ
绪论..................................................................... 1
第1章  可控硅主回路的设计与计算......................................... 3
1.1整流变压器的选择................................................. 3
1.2整流器件的选择....................................................5
1.2.1电枢回路整流器件的选择......................................5
1.2.2磁场回路整流元件的选择......................................6
1.3整流器件保护装置的选择............................................7
1.3.1过电压保护..................................................7
1.3.2晶闸管的过电流保护.........................................11
1.4平波电抗器电感量的计算...........................................11
1.5系统检测装置的选择...............................................13
1.5.1测速发电机参数的选择.......................................13
1.5.2电枢可逆...................................................14
第2章  系统控制回路的分析与设计.........................................16
2.1转速、电流双闭环直流调速系统及其静特性........................... 16
2.1.1转速、电流双闭环直流调速系统的组成......................... 16
2.1.2稳态结构图和静特性........................................ 17
2.1.3各变量的稳态工作点和稳态参数计算......................... 18
2.2双闭环直流调速系统的数学模型和动态性能分析.......................19
2.2.1双闭环直流调速系统的动态数学模型..........................19
2.2.2起动过程分析..............................................19
2.2.3动态抗扰性能分析..........................................21
2.2.4转速和电流两个调节器的作用................................22
2.3电流环稳态参数的计算和设计.......................................22
2.4转速环参数选择和设计.............................................30
2.5限幅电路的设计...................................................36
2.6给定积分器的设计.................................................37
2.7脉冲部分的设计与计算.............................................38
2.7.1同步变压器的选择..........................................38
2.7.2移相触发器的选择..........................................38
2.7.3脉冲放大环节..............................................44
2.7.4简单绝对值电路............................................45
第3章  基于MATLAB的控制系统分析与校正............................... 47
3.1转速，电流双闭环直流调速系统的动态数学模型.......................47
第4章  直流电源的设计............................................. 54
4.1直流稳压电源的设计...............................................54
结论.................................................................57
参考文献.............................................................59
致谢............................................................... 60

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