本文選題：永磁調(diào)速器　切入點：分離變量法　出處：《東北大學(xué)》2013年博士論文

【摘要】：永磁調(diào)速器(Adjustable Permanent Magnetic Coupler, APMC)是通過調(diào)節(jié)氣隙長度控制輸出轉(zhuǎn)速/轉(zhuǎn)矩的一種全新理念的調(diào)速節(jié)能設(shè)備,采用了純機械式結(jié)構(gòu),利用磁場間的作用力傳遞轉(zhuǎn)矩,實現(xiàn)了非接觸傳遞能量,已成為永磁傳動技術(shù)應(yīng)用中的一個研究熱點。相比傳統(tǒng)的變頻調(diào)速技術(shù),永磁調(diào)速器具有維護方便、容忍對中誤差、減小振動傳遞、避免產(chǎn)生電力諧波污染以及電磁干擾等諸多優(yōu)點,已經(jīng)成功應(yīng)用于電力、石油化工等行業(yè)中。但是永磁調(diào)速器的應(yīng)用還遠沒達到成熟階段,有很多問題需要進一步研究和完善。為此,本文對永磁調(diào)速器的結(jié)構(gòu)、磁路以及建模分析技術(shù)進行了深入系統(tǒng)地研究,這些研究工作對永磁調(diào)速器的產(chǎn)品化有著重要意義。本文詳細地描述了永磁調(diào)速器的結(jié)構(gòu)與工作原理,闡述了該設(shè)備的創(chuàng)新節(jié)能理念；基于永磁調(diào)速器的全新磁路原理,在原有結(jié)構(gòu)基礎(chǔ)上對設(shè)備的結(jié)構(gòu)進行了擴展設(shè)計,嘗試了不同的結(jié)構(gòu)形式以及氣隙調(diào)節(jié)裝置,豐富了永磁調(diào)速器的結(jié)構(gòu)系統(tǒng)。二維線性層法建模過于復(fù)雜、繁瑣,所建立的解析模型不能深入系統(tǒng)地反映設(shè)計參數(shù)對永磁調(diào)速器性能的影響,針對這一關(guān)鍵問題,本文在查閱了大量相關(guān)文獻的基礎(chǔ)上,基于分離變量法建立了永磁調(diào)速器的解析模型；討論了永磁調(diào)速器中導(dǎo)體轉(zhuǎn)子的兩種設(shè)計方案,即單層／多層結(jié)構(gòu),通過應(yīng)用解析模型進行數(shù)值對比分析,確定了多層結(jié)構(gòu)在提高傳動轉(zhuǎn)矩方面的優(yōu)越性；同時利用ANSYS軟件對永磁調(diào)速器進行了二維仿真分析,仿真結(jié)果證明了所建立解析模型的有效性；最后應(yīng)用永磁調(diào)速器的解析模型進行了參數(shù)的優(yōu)化設(shè)計,實現(xiàn)了參數(shù)的最優(yōu)化配置。永磁調(diào)速器的數(shù)值分析主要采用二維有限元方法進行近似分析,分析結(jié)果的精度不高,針對這一問題,本文在查閱了大量相關(guān)文獻的基礎(chǔ)上,基于三維有限元法建立了永磁調(diào)速器的電磁場仿真模型；首先通過靜態(tài)分析,研究了靜態(tài)時永磁調(diào)速器中磁場的分布規(guī)律,為接下來動態(tài)電磁場的分析打下基礎(chǔ)；然后重點對永磁調(diào)速器進行了動態(tài)仿真分析,研究了渦流場、耦合磁場以及磁場間耦合力的分布規(guī)律,探索了結(jié)構(gòu)參數(shù)對渦流、渦流損耗以及傳動轉(zhuǎn)矩的影響規(guī)律。在理論研究的基礎(chǔ)上,建造了一臺小功率永磁調(diào)速器,搭建了實驗平臺,并進行了實驗分析研究,實驗結(jié)果驗證了本文理論研究的正確性。針對渦流回路的路徑不規(guī)范,回路中的雜散電流較多等問題,本文對永磁調(diào)速器現(xiàn)有的磁路結(jié)構(gòu)進行了改進,著重論述了一種含有開槽導(dǎo)體盤的磁路結(jié)構(gòu)；利用ANSYS軟件對該磁路結(jié)構(gòu)進行二維仿真分析,仿真結(jié)果證明了開槽磁路結(jié)構(gòu)在提高傳動轉(zhuǎn)矩方面的優(yōu)越性；然后利用ANSYS軟件對該磁路結(jié)構(gòu)進行三維仿真分析,展示了渦流路徑的優(yōu)化效果,研究了電磁場的動態(tài)特性；最后為了增加開槽磁路中的磁通密度,更進一步提高永磁調(diào)速器的效率,提出了一種塞滿鋼塊的開槽導(dǎo)體盤設(shè)計方法,并且介紹了改進后的開槽磁路結(jié)構(gòu)；利用ANSYS軟件對改進后的開槽磁路結(jié)構(gòu)進行二維仿真分析,仿真結(jié)果證明了該磁路結(jié)構(gòu)的高效率。
[Abstract]:Permanent Magnetic Speed Governor ( APMC ) is a kind of new idea of controlling the output speed / torque by adjusting the air gap length . The pure mechanical structure is used to transmit the torque by using the force between the magnetic fields . It has been successfully applied in the fields of electric power and petrochemical industry . However , the application of the permanent magnet speed governor has not yet reached the mature stage , and many problems need to be further studied and perfected .
Based on the new magnetic circuit principle of the permanent - magnet speed governor , the structure of the equipment is extended and designed on the basis of the original structure , and the structure system of the permanent - magnet speed governor is enriched . The two - dimensional linear layer method is too complex and complex , and the analytical model established can not systematically reflect the influence of the design parameters on the performance of the permanent - magnet speed governor , and the analytical model of the permanent - magnet speed governor is established based on the separation variable method .
The two design schemes of the conductor rotor in the permanent magnet speed governor , namely , single - layer / multi - layer structure are discussed , and the advantages of the multi - layer structure in improving the transmission torque are determined by applying the analytical model to numerical contrast analysis .
At the same time , the two - dimensional simulation analysis of the permanent magnet speed governor is carried out by ANSYS software , and the simulation results show the validity of the analytical model .
Finally , the optimization design of the parameters is carried out by using the analytical model of the permanent magnet speed governor . The optimization of the parameters is realized . The numerical analysis of the permanent magnet speed governor mainly adopts the two - dimensional finite element method to approximate the analysis , and the accuracy of the analysis result is not high . According to the problem , the electromagnetic field simulation model of the permanent magnet speed governor is established based on the three - dimensional finite element method .
Firstly , through static analysis , the distribution law of magnetic field in the static magnetic speed governor is studied , which lays the foundation for the analysis of the dynamic electromagnetic field .
Based on the theoretical research , a small - power permanent - magnet speed governor is constructed , the experimental platform is built , and the experimental analysis is carried out . The experimental results verify the correctness of the theoretical research . The existing magnetic circuit structure of the permanent - magnet speed governor is improved , and the magnetic circuit structure with slotted conductor plate is emphatically discussed .
The two - dimensional simulation analysis of the magnetic circuit structure is carried out by ANSYS software , and the simulation results show the superiority of the slotted magnetic circuit structure in improving the transmission torque ;
Then using ANSYS software to analyze the structure of the magnetic circuit , the optimization effect of the eddy current path is demonstrated , and the dynamic characteristics of the electromagnetic field are studied .
In the end , in order to increase the magnetic flux density in the slotted magnetic circuit , the efficiency of the permanent magnet speed governor is further improved , a design method of the slotted conductor plate of the full steel block is proposed , and the improved slotted magnetic circuit structure is introduced .
The improved slotted magnetic circuit structure is subjected to two - dimensional simulation analysis by ANSYS software , and the simulation results show the high efficiency of the magnetic circuit structure .

【學(xué)位授予單位】：東北大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2013
【分類號】：TH139
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本文編號：1702134