自主机车转子磁场定向控制的新成果:第二部分:低速控制实现与实验性能

Alexadru Bitoleanu, M. Popescu, C. Suru, L. Goreci
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引用次数: 1

摘要

本文对自主电力机车牵引系统的性能进行了实验研究。牵引系统由电压逆变器和感应电机组成,其控制基于间接转子磁场定向控制(IFOC)方法。对于这个特殊的应用程序,IFOC的实现有一些主要的困难。首先,由于电机电压具有很强的畸变,不能用于矢量场识别。另一方面,控制结构包含四个控制器,分布在两种相互连接的控制方式上,它们的整定非常复杂。为了减轻这些困难,作者通过使用两个滞后电流控制器开发了一种改进的结构。然后,在dSPACE 1104 DSP板上开发并实现了控制算法。为了测试整个系统,使用了一个专门的实验台,利用电机的机械能的回收。通过实验评估,确定了整个速度域的动态和静态性能。
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New Achievements in the Rotor Field-Oriented Control for Autonomous Locomotives : Part 2: Control Implementation and Experimental Performances at Low Speed
The paper is dedicated to the experimental determination of the performances of the traction system of an autonomous electric locomotive. The traction system is composed by the voltage inverter and induction motors and its control is based on the indirect rotor field-oriented control (IFOC) method. For this particular application, the IFOC implementation has some major difficulties. First, the motors’ voltage cannot be used for vector field identification because it is strong distorted. On the other part, the control structure contains four controllers distributed on the two interconnected control ways and their tuning is very complicate. In order to mitigate these difficulties, the authors have developed a modified structure by using two hysteresis current controllers. Next, the control algorithm has been developed and implemented on the dSPACE 1104 DSP board. In order to test the entire system, a dedicated experimental stand that uses the recovery of the mechanical energy of the motor was used. The experimental evaluation was performed to determine the dynamic and static performances over entire speed domain.
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