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基于空间电压矢量电力机车四象限整流的研究

摘要：本论文侧重于三相电压型PWM整流器及其控制系统的工程设计与实现，以提供一种较为实用的控制器设计与选取方法。论文主要内容包括算法研究、控制器设计、装置开发、样机仿真。介绍了四象限整流器为核心的电力机车系统,阐述了四象限整流器的运行原理及控制电路设计。提出一种简单的空间电压矢量算法，该算法在矢量区间判断上采用非坐标变换法进行判断，给出了在各个扇区中的矢量选择以及作用时间的计算公式。这种改进方法对SVPWM控制算法有一定程度的简化，从而使其更易于数字化实现。最后建立了Matlab/Simulink环境下的仿真模型，对上述控制算法进行了仿真，仿真结果验证了控制算法的正确性和可行性。同时，这种控制算法亦能使整流系统的能量双向流动，实现能量再生，且具有控制算法简单，直流电压利用率高的特点。 叙词：四象限;整流器;PWM;空间电压矢量 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

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