考虑铁损的异步电机矢量控制的仿真研究
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密 惠 保
摘要
异步电机系统是应用最广泛的传动系统，在工业生产和生活中异步电机所占的份额高达60%，目前在土矿企业中使用着大量的交流异步电机，其中有相当多的还处于非经济运行状态，浪费掉大量的电能，变频调速技术作为高新技术、基础技术和节能技术，已经渗透到经济领域的所有技术部门中。因此，考虑铁损的最大效率矢量控制技术有非常重要的意义，并且具有广阔的应用前景。异步电动机结构简单、运行可靠、便于维护、价格低廉，因而目前，发达国家大多采用交流电动机。尽管交流电动机是一个非线性、多变量、高阶、强祸合的非线性系统，不象直流电机那样易于控制转矩，但是随着矢量控制理论的发展完善，以及微电子技术、计算机控制技术的发展，交流调速系统的性能完全可以和直流调速性能相媲美。
本文提出了考虑铁损的异步电机数学模型，讨论了矢量控制和最大效率控制的关系，并且推导出了异步电机在任意角频率。，时对应的最优转差率公式。同时结合二者，提出了考虑铁损的异步电机最大效率矢量控制系统数学模型，并且利用了毗TALB/51咖LNIK工具对数学模型建模及其仿真，最后简要介绍了FPAG技术，以及该技术在交流调速系统中的应用。
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本文共有六章。第一章简单介绍了交流变频调速技术和矢量控制技术的发展历史及现状，同时也对交流调速系统的发展趋势和动向作了一简要描述，顺便提出了课题研究背景和主要研究内容;第二章简单介绍了一般的矢量控制技术和理论;第三章结合实际的例子详细的介绍了MATALB/SMIULINK的建模仿真过程;第四章根据异步电机的效率公式，推导出了最大效率控制时的最优转差率公式;第五章也是本文的又一重点，提出了考虑铁损的异步电机最大效率矢量控制系统模型和考虑铁损的异步电机模型，并且给出了动态仿真结果，对模型的建立进行了验证;第六章是本文的最后一章，结合矢量控制硬件技术的发展，提出了基于FPGA的矢量控制系统。 [资料来源：THINK58.com]
关键词:异步电机，铁损，最大效率控制，矢量控制，FPAG [来源：http://www.think58.com]
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Abstract
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The asynchronous machine system applies the most widespread transmission system, the asynchronous machine occupies the share in the industrial production and the life to reach as high as 60%, at present is using the massive exchange asynchronous machine in the native ores enterprise, including quite many is also at the non-economy running status, wastes the massive electrical energies, the frequency conversion velocity modulation technology takes the high technology and new technology, the foundation technology and the energy conservation technology, already seeped to the economic domain all technical department. Therefore, considered that the iron loss the maximum efficiency vector control technology has the very vital significance, and has the broad application prospect. The asynchronous motor structure is simple, the movement reliable, is advantageous for the maintenance, the low in price, thus present, the developed country mostly uses the motor. Although the motor is the nonlinear system which a misalignment, the multivariable, the higher order, the strong calamity gather, does not look like the direct current machine such easy controlling torque, but along with the vector control theory's development consummation, as well as the microelectronic technology, the computer control technology's development, the exchange velocity modulation system's performance definitely may compare favorably with the direct-current velocity modulation performance. [版权所有：http://think58.com]
This article proposed the consideration iron loss's asynchronous machine mathematical model, discussed the vector control and the maximum efficiency control relations, and inferred the asynchronous machine in the random angular frequency. , when corresponds most superior sliding formula. Simultaneously unifies the two, proposed the consideration iron loss asynchronous machine maximum efficiency vector control system mathematical model, and used has adjoined TALB/51 ka the LNIK tool to the mathematical model modelling and the simulation, finally introduced the FPAG technology briefly, as well as this technology in exchange velocity modulation system's application. this article altogether has six chapters. The first chapter introduced simply the exchange frequency conversion velocity modulation technology and the vector control technology's historical development and the present situation, simultaneously also to exchanged the velocity modulation system's trend of development and the trend have made a brief description, proposed the topic research background and the main research content while convenient; The second chapter introduced the general vector control technology and the theory simply; The third chapter union actual example detailed introduction MATALB/SMIULINK modelling simulation process; The fourth chapter the basis asynchronous machine's efficiency formula, inferred time the maximum efficiency control most superior sliding formula; The fifth chapter is also this article another key point, proposed the consideration iron loss asynchronous machine maximum efficiency vector control system model and the consideration iron loss asynchronous machine model, and has given the dynamic simulation result, has carried on the confirmation to the model establishment; The sixth chapter is this article last chapter, the union vector control hardware technology development, proposed based on the FPGA vector control system. key word: Asynchronous machine, iron loss, maximum efficiency control, vector control, FPAG [资料来源：http://THINK58.com]
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