基于空間電壓矢量電力機車四象限整流的研究

摘要：本論文側重于三相電壓型PWM整流器及其控制系統的工程設計與實現，以提供一種較為實用的控制器設計與選取方法。論文主要內容包括算法研究、控制器設計、裝置開發、樣機仿真。介紹了四象限整流器為核心的電力機車系統,闡述了四象限整流器的運行原理及控制電路設計。提出一種簡單的空間電壓矢量算法，該算法在矢量區間判斷上采用非坐標變換法進行判斷，給出了在各個扇區中的矢量選擇以及作用時間的計算公式。這種改進方法對SVPWM控制算法有一定程度的簡化，從而使其更易于數字化實現。最后建立了Matlab/Simulink環境下的仿真模型，對上述控制算法進行了仿真，仿真結果驗證了控制算法的正確性和可行性。同時，這種控制算法亦能使整流系統的能量雙向流動，實現能量再生，且具有控制算法簡單，直流電壓利用率高的特點。 敘詞：四象限;整流器;PWM;空間電壓矢量 Abstract：This dissertation focuses on the engineering design and realization of high power three-phase Voltage Source Rectifier (VSR) with emphasis on the control technique. The dissertation work, covering the methodology study, controller design, prototype implementation and experiment, is presented as following. Electric locomotive system mainly concentrated on 4-quardant rectifier is stated. Circulate principle and Control system design of electric locomotive 4-quardant rectifier are presented .A simplified algorithm is proposed in this paper for space voltage vectorwhich adopting non-standard vertical reference frame to judge the vector sector and calculate the action time. The ways make the calculate load of the SVPWM reduced and more easily digital applied. At last, the whole simulation module of control system is built up under the power MATLAB/SIMULINK platform and the above several ways are used in the simulation module. The result of the simulation proves that control ways are right and feasible. At the same time, from the concrete analysisthe rectifying system applied the simple algorithm can make the power bi-directional flow. Moreover, its control algorithm is easy and the range of DC utilizing efficiency is large. Keyword：4-quardant;Rectifier;PWM;Voltage space-vector