基于空間電壓矢量電力機(jī)車四象限整流的研究

摘要：本論文側(cè)重于三相電壓型PWM整流器及其控制系統(tǒng)的工程設(shè)計(jì)與實(shí)現(xiàn)，以提供一種較為實(shí)用的控制器設(shè)計(jì)與選取方法。論文主要內(nèi)容包括算法研究、控制器設(shè)計(jì)、裝置開發(fā)、樣機(jī)仿真。介紹了四象限整流器為核心的電力機(jī)車系統(tǒng),闡述了四象限整流器的運(yùn)行原理及控制電路設(shè)計(jì)。提出一種簡單的空間電壓矢量算法，該算法在矢量區(qū)間判斷上采用非坐標(biāo)變換法進(jìn)行判斷，給出了在各個(gè)扇區(qū)中的矢量選擇以及作用時(shí)間的計(jì)算公式。這種改進(jìn)方法對SVPWM控制算法有一定程度的簡化，從而使其更易于數(shù)字化實(shí)現(xiàn)。最后建立了Matlab/Simulink環(huán)境下的仿真模型，對上述控制算法進(jìn)行了仿真，仿真結(jié)果驗(yàn)證了控制算法的正確性和可行性。同時(shí)，這種控制算法亦能使整流系統(tǒng)的能量雙向流動，實(shí)現(xiàn)能量再生，且具有控制算法簡單，直流電壓利用率高的特點(diǎn)。 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