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摘要：随着人类的发展能源需求正极大地影响着全球经济发展，我国同样也面临着经济增长对能源需求的压力。电机是能源消耗大户之一，占工业总用电量的80%。在电机节能技术中，变频调速技术是最受瞩目的。变频调速技术以其显著的节电效果、优良的调速性能以及广泛的适用性而成为电气传动发展的主流方向。而异步电动机的数学模型是一个高阶、非线性、强耦合的多变量系统，通过坐标的变幻，可以使之降阶并且简化，但却没有改变其非线性多变量的本质。
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本论文主要介绍了变频调速的基础技术，简述了它在我国的发展和应用以及今后在这方面应做的工作；其次对仿真系统的各个模块以及整个仿真系统进行了
系统地分析，对各模块的参数值的由来做了一个大概的说明，并对调速系统的实施方案进行了论证。并在构建好参数的整个系统中，通过调整参数数值来找到系统的一个极限值以及参数值的一个大概范围。在这篇论文中主要运用了一种基于Matlab的Simulink和Power system工具箱，使用面向系统电气原理结构图的仿真新方法来实现了基于变频技术的交流异步电机调速系统设计建模与仿真。在本篇论文中将着重分析介绍异步电机的磁场轨迹。20408
经相关的实验及仿真波形分析，表明该系统满足预期的设计要求。
关键词：仿真 变频技术 异步电机 磁链 磁场轨迹 交流调速 PWM
Design of AC induction motor system based on Variable Frequency Technology
Abstract: With the development of human activities，the need of energy positively impact on the global economy，our country are also facing pressure on economic growth on energy demand. Motor is one of the large energy consumption, accounting for 80% of industrial electricity consumption. Motor frequency control technology is energy-saving technologies in the most watched. Frequency control technology is famous for its significant saving effect, good speed performance and broad applicability to become mainstream electric transmission
development. Mathematical model of asynchronous motor is a high-level, non-linear, strong coupling of multivariable systems by changing the coordinates, you can make the order reduction and simplification, but did not change the nature of the nonlinear multivariable.
This paper introduces the basic technology of frequency control, outlining the its development in our country and its application in this regard as well as future work should be done; followed by the various modules of the simulation system and the entire simulation system systematically analyze each module by the parameter values to do a rough description, and the embodiment of speed control system were demonstrated. And to build a good argument throughout the system by adjusting parameter valuesto find an approximate range of parameter values and limits of the system. In this paper, the main use of a Matlab-based toolbox Simulink and Power system, using new methods for simulation electrical schematic diagram of the system to achieve the AC induction motor speed control system design based on modeling and simulation of inverter technology. This paper will focus on analysis of the magnetic field in the trajectory describes a synchronous motor.
By the relevant experimental and simulation waveform analysis indicates that the system meets the design requirements.
Keywords: simulation; frequency technology; Asynchronous motors; flux; Magnetic track; AC variable speed； PWM
目录
1 前言
1.1 交流变频技术的发展和研究现状 5
1.2变频调速技术的优点和发展方向6
1.3 相关技术分析•8
1.3.1 MATLAB•8
1.3.2 PWM•9
1.3.3 恒压频比•11
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