异步电机的无速度传感器调速系统研究

发布时间：2018-05-04 06:46

本文选题：异步电机 + 矢量控制　；参考：《南京航空航天大学》2014年硕士论文

【摘要】：20世纪70年代初，矢量控制技术的问世使得交流电动机能够获得与直流电动机相仿的高动态性能，给交流调速系统带来了巨大的变革。论文主要讨论了矢量控制的基本思想，在基于模型参考自适应的理论基础上，设计出了异步电机的无速度传感器矢量控制系统，在仿真的基础上进行了相关的实验，取得了较好的效果。论文主要的研究内容包括： (1)通过对矢量控制原理的探讨，分析矢量控制方式的优缺点并结合空间电压矢量脉宽调制技术(SVPWM)，建立异步电机的矢量控制系统。 (2)先对模型参考自适应的理论支持(Popov超稳定性理论)做了相应的探讨，然后对它的基本思想和三种不同的模型参考自适应方法做了详细的介绍和对比分析，最后选择了合适的方法，在矢量控制的基础上建立了基于无速度传感器的异步电机矢量控制模型。 (3)在Matlab/Simulink环境中分别搭建出上述的异步电机有速度传感器和无速度传感器的控制系统仿真，从得到的仿真实验结果分析得知：异步电机在有速度传感器和无速度传感器的控制系统中，无论是在低速运行、高速运行、转速突变，还是在电机空载启动、带负载启动的情况下，上述的异步电机控制系统都表现出了良好的性能，达到了设计的要求。 (4)本课题的实验部分以TMS320F2812DSP为控制核心，搭建了异步电机有速度传感器的矢量控制数字化平台，，根据仿真模块编写出相应模块的子程序并在软件CCS3.1中进行程序调试，实验结果验证了本文异步电机交流控制系统的可行性。
[Abstract]:At the beginning of 1970s, the advent of vector control technology enabled AC motor to obtain high dynamic performance similar to DC motor, which brought great changes to AC speed regulation system. This paper mainly discusses the basic idea of vector control. Based on the model reference adaptive theory, the speed sensorless vector control system of asynchronous motor is designed, and the relevant experiments are carried out on the basis of simulation. Good results have been achieved. The main contents of this thesis are as follows: 1) by discussing the principle of vector control, analyzing the merits and demerits of vector control mode and combining space voltage vector pulse width modulation (SVPWM) technique, the vector control system of asynchronous motor is established. (2) this paper first discusses the theory of model reference adaptation supporting Popov's hyperstability theory, and then gives a detailed introduction and comparative analysis of its basic idea and three different model reference adaptive methods. Finally, an appropriate method is selected and a speed sensorless vector control model of asynchronous motor is established based on vector control. The simulation of the control system of the asynchronous motor with speed sensor and no speed sensor is built in the Matlab/Simulink environment. The analysis of the simulation results shows that the asynchronous motor in the speed sensor and speed sensorless control system, whether in the low speed operation, high speed operation, rotational speed mutation, or in the motor no load start, In the case of load starting, the above control system of asynchronous motor shows good performance and meets the design requirements. In the experiment part of this project, the digital platform of vector control of asynchronous motor with speed sensor is built with TMS320F2812DSP as the control core. According to the simulation module, the subprogram of the corresponding module is compiled and debugged in the software CCS3.1. The experimental results verify the feasibility of the AC control system of asynchronous motor in this paper.
【学位授予单位】：南京航空航天大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM343

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