轉速、電流雙閉環直流調速系統設計

電子機電論文編號:JD639  附任務書,答辯PPT,原理圖,論文字數:19548,頁數:61

目  錄

摘要....................................................................Ⅰ
Abstract.................................................................Ⅱ
緒論..................................................................... 1
第1章  可控硅主回路的設計與計算......................................... 3
1.1整流變壓器的選擇................................................. 3
1.2整流器件的選擇....................................................5
1.2.1電樞回路整流器件的選擇......................................5
1.2.2磁場回路整流元件的選擇......................................6
1.3整流器件保護裝置的選擇............................................7
1.3.1過電壓保護..................................................7
1.3.2晶閘管的過電流保護.........................................11
1.4平波電抗器電感量的計算...........................................11
1.5系統檢測裝置的選擇...............................................13
1.5.1測速發電機參數的選擇.......................................13
1.5.2電樞可逆...................................................14
第2章  系統控制回路的分析與設計.........................................16
2.1轉速、電流雙閉環直流調速系統及其靜特性........................... 16
2.1.1轉速、電流雙閉環直流調速系統的組成......................... 16
2.1.2穩態結構圖和靜特性........................................ 17
2.1.3各變量的穩態工作點和穩態參數計算......................... 18
2.2雙閉環直流調速系統的數學模型和動態性能分析.......................19
2.2.1雙閉環直流調速系統的動態數學模型..........................19
2.2.2起動過程分析..............................................19
2.2.3動態抗擾性能分析..........................................21
2.2.4轉速和電流兩個調節器的作用................................22
2.3電流環穩態參數的計算和設計.......................................22
2.4轉速環參數選擇和設計.............................................30
2.5限幅電路的設計...................................................36
2.6給定積分器的設計.................................................37
2.7脈沖部分的設計與計算.............................................38
2.7.1同步變壓器的選擇..........................................38
2.7.2移相觸發器的選擇..........................................38
2.7.3脈沖放大環節..............................................44
2.7.4簡單絕對值電路............................................45
第3章  基于MATLAB的控制系統分析與校正............................... 47
3.1轉速，電流雙閉環直流調速系統的動態數學模型.......................47
第4章  直流電源的設計............................................. 54
4.1直流穩壓電源的設計...............................................54
結論.................................................................57
參考文獻.............................................................59
致謝............................................................... 60

摘  要

本設計是電樞可逆，轉速、電流雙閉環直流調壓調速系統。磁場回路采用橋式整流電路，電樞回路采用可控硅三相橋在式整流調壓系統，采用接觸器電流切換以實現可逆運行。系統應用工程方法設計的轉速、電流兩個調節器均采用PI結構，以實現穩態無靜差，同時在轉速調節器上引入轉速微分負反饋，從而達到了抑制轉速超調的目的。最后用MATLAB/SIMULINK對系統進行了仿真分析與校正，為系統的參數進一步優化和現場調試奠定了基礎。

關鍵詞：雙閉環直流調速系統；電樞可逆； 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