本文選題：電磁設(shè)計(jì)輔助系統(tǒng)　切入點(diǎn)：場(chǎng)路結(jié)合法　出處：《沈陽(yáng)工業(yè)大學(xué)》2017年碩士論文

【摘要】：實(shí)心轉(zhuǎn)子異步電機(jī)結(jié)構(gòu)簡(jiǎn)單、機(jī)械特性“軟”、制造成本低廉,應(yīng)用范圍廣泛,然而其磁場(chǎng)分布復(fù)雜,轉(zhuǎn)子參數(shù)計(jì)算困難。電機(jī)運(yùn)行時(shí),實(shí)心轉(zhuǎn)子中感應(yīng)出的渦流不但會(huì)影響磁場(chǎng)的分布,而且也會(huì)使轉(zhuǎn)子阻抗發(fā)生變化。單純依靠磁路法分析其磁場(chǎng)和運(yùn)行性能,不能精確計(jì)及端部效應(yīng)等因素。采用三維有限元法,可以較全面地考慮這些因素對(duì)轉(zhuǎn)子阻抗及電機(jī)性能的影響,揭示出磁場(chǎng)的分布規(guī)律,為電機(jī)的運(yùn)行性能分析提供了理論參考。實(shí)心轉(zhuǎn)子異步電機(jī)轉(zhuǎn)子中復(fù)雜的三維非線性渦流場(chǎng)計(jì)算是分析電機(jī)性能的基礎(chǔ)。本文從實(shí)心轉(zhuǎn)子異步電機(jī)的三維磁場(chǎng)分析出發(fā),采用場(chǎng)路結(jié)合法,計(jì)算了轉(zhuǎn)子阻抗,提出了符合工程實(shí)際的端部修正系數(shù)。并依據(jù)場(chǎng)計(jì)算結(jié)果和此類電機(jī)的設(shè)計(jì)原理,開(kāi)發(fā)了一款界面友好、計(jì)算精準(zhǔn)的實(shí)心轉(zhuǎn)子異步電機(jī)電磁設(shè)計(jì)輔助系統(tǒng)。本文首先通過(guò)三維有限元法分析了不同工況下的磁場(chǎng)分布規(guī)律,并在三維磁場(chǎng)研究的基礎(chǔ)上,計(jì)算了反電勢(shì)、轉(zhuǎn)矩等數(shù)值,通過(guò)與樣機(jī)測(cè)試結(jié)果對(duì)比可知,在不忽略轉(zhuǎn)子端部效應(yīng)等前提下通過(guò)三維磁場(chǎng)研究電機(jī)的整體性能,可得到更為準(zhǔn)確的計(jì)算結(jié)果。其次,以三維磁場(chǎng)計(jì)算結(jié)果為基礎(chǔ),采用場(chǎng)路結(jié)合法計(jì)算出轉(zhuǎn)子的阻抗、電流、電勢(shì)及損耗,并提出了符合電機(jī)實(shí)際運(yùn)行狀態(tài)的端部修正系數(shù),克服了采用傳統(tǒng)磁路算法因無(wú)法考慮端部效應(yīng)所帶來(lái)的誤差。最后,依據(jù)上述研究理論,基于C#編程語(yǔ)言,開(kāi)發(fā)了一款可用于實(shí)心轉(zhuǎn)子異步電機(jī)的電磁設(shè)計(jì)輔助系統(tǒng),用實(shí)例說(shuō)明了本系統(tǒng)計(jì)算的快速性和準(zhǔn)確性,實(shí)現(xiàn)了電機(jī)電磁數(shù)據(jù)的可視化、計(jì)算結(jié)果的表格化和曲線化。
[Abstract]:Solid rotor asynchronous motor has the advantages of simple structure, soft mechanical characteristics, low manufacturing cost and wide range of application. However, its magnetic field distribution is complex, and the rotor parameters are difficult to calculate.The eddy current induced in the solid rotor will not only affect the magnetic field distribution, but also make the rotor impedance change.The magnetic field and operation performance can not be accurately taken into account by the magnetic circuit method.The influence of these factors on rotor impedance and motor performance can be considered comprehensively by using three-dimensional finite element method, and the distribution law of magnetic field is revealed, which provides a theoretical reference for the analysis of motor operating performance.The calculation of three dimensional nonlinear eddy current field in the rotor of solid rotor asynchronous motor is the basis of analyzing the performance of motor.Based on the three-dimensional magnetic field analysis of the solid rotor asynchronous motor, the rotor impedance is calculated by using the field-circuit combination method, and the end correction coefficient is put forward in accordance with the engineering practice.According to the result of field calculation and the design principle of this kind of motor, a kind of electromagnetic design assistant system of solid rotor asynchronous motor with friendly interface and accurate calculation is developed.In this paper, the distribution of magnetic field under different working conditions is analyzed by means of 3D finite element method. Based on the study of 3D magnetic field, the reverse EMF and torque are calculated, and the results are compared with the test results of the prototype.On the premise of not neglecting the rotor end effect, a more accurate calculation result can be obtained by studying the overall performance of the motor by means of three-dimensional magnetic field.Secondly, based on the results of 3D magnetic field calculation, the impedance, current, potential and loss of the rotor are calculated by using the field-circuit combination method, and the end correction coefficient in accordance with the actual running state of the motor is put forward.The error caused by the traditional magnetic circuit algorithm can not be considered.Finally, based on the above research theory and C # programming language, an electromagnetic design assistant system for solid rotor asynchronous motor is developed. The calculation speed and accuracy of the system are illustrated by an example.The visualization of the electromagnetic data of the motor is realized, and the results of calculation are tabulated and curvilinear.
【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM343

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