本文選題：軸向磁場 + 輕量化設(shè)計��； 參考：《哈爾濱工業(yè)大學(xué)》2017年碩士論文

【摘要】：軸向磁通永磁同步電機(jī)(axial flux permanent magnet synchronous machine,AFPMSM)相對其他結(jié)構(gòu)電機(jī)具有較高的功率密度和轉(zhuǎn)矩密度,又由于其扁平的結(jié)構(gòu)有著良好地空間適應(yīng)性。因此AFPMSM在交通、風(fēng)電以及航天等領(lǐng)域有著廣闊的應(yīng)用前景。在電機(jī)結(jié)構(gòu)設(shè)計時,進(jìn)一步減少AFPMSM的重量,可以有效提升其運(yùn)行特性。本文便以AFPMSM作為研究對象,對電機(jī)結(jié)構(gòu)進(jìn)行輕量化設(shè)計,以及對輕量化后電機(jī)可能存在的相關(guān)問題進(jìn)行研究。主要研究內(nèi)容如下:首先,從單定子單轉(zhuǎn)子軸向磁通永磁同步電機(jī)(single-stator single-rotor AFPMSM,SSSR AFPMSM)入手。在性能指標(biāo)給定的前提下,給出傳統(tǒng)電機(jī)結(jié)構(gòu)的設(shè)計方法,并結(jié)合有限元仿真研究軛部結(jié)構(gòu)的優(yōu)化方法,使其轉(zhuǎn)矩密度達(dá)到最高。同時對AFPMSM軛部磁路進(jìn)行研究,分析軛部材料的利用率,在此基礎(chǔ)上探究電機(jī)的輕量化結(jié)構(gòu)設(shè)計方法,并給出理論驗證。其次,結(jié)合提出的輕量化設(shè)計方法,對SSSR AFPMSM進(jìn)行輕量化設(shè)計,并對優(yōu)化前后電機(jī)輸出性能進(jìn)行對比。同時對單定子雙轉(zhuǎn)子軸向磁通永磁同步電機(jī)(single-stator double-rotor AFPMSM,SSDR AFPMSM)和雙定子單轉(zhuǎn)子軸向磁通永磁同步電機(jī)(double-stator single-rotor AFPMSM,DSSR AFPMSM)的輕量化結(jié)構(gòu)設(shè)計進(jìn)行探究,給出優(yōu)化前后的性能對比。并橫向比較不同結(jié)構(gòu)AFPMSM的輸出性能,分析其規(guī)律。再次,針對軸向磁通永磁同步電機(jī)在裝配過程中容易產(chǎn)生定轉(zhuǎn)子靜偏心的結(jié)構(gòu)屬性,從理論層面對AFPMSM靜偏心進(jìn)行描述和研究。分析其靜偏心特性對電機(jī)磁場求解邊界條件的影響。并基于磁場解析對標(biāo)量磁位進(jìn)行運(yùn)算,求解靜偏心磁場的解析表達(dá)式。并將解析結(jié)果與三維有限元方法進(jìn)行對比驗證。同時對多盤電機(jī)以及考慮到定子開槽時的AFPMSM的靜偏心磁場進(jìn)行研究。最后,對SSDR AFPMSM和DSSR AFPMSM結(jié)構(gòu)電機(jī)機(jī)殼、轉(zhuǎn)軸和端蓋等結(jié)構(gòu)的機(jī)械強(qiáng)度進(jìn)行研究。給出不同類型軸向磁通永磁同步電機(jī)各部件之間的裝配方法,然后對電機(jī)各機(jī)械部件在負(fù)載工況下的實際受力情況進(jìn)行描述,并建立應(yīng)力模型對其機(jī)械強(qiáng)度進(jìn)行計算,綜合其形狀和材料屬性探究出滿足電機(jī)負(fù)載工況下機(jī)械強(qiáng)度的最小尺寸值,實現(xiàn)機(jī)殼、轉(zhuǎn)軸和端蓋等機(jī)械結(jié)構(gòu)的輕量化設(shè)計。
[Abstract]:Axial flux permanent magnet synchronous motor (PMSM) has higher power density and torque density than other motor structures, and has good spatial adaptability due to its flat structure. Therefore, AFPMSM has a broad application prospect in the fields of transportation, wind power and spaceflight. In the design of motor structure, the weight of AFPMSM can be further reduced, which can effectively improve the performance of AFPMSM. In this paper, AFPMSM is taken as the research object, the structure of the motor is designed to be lightweight, and the related problems of the motor after lightweight are studied. The main research contents are as follows: firstly, single-stator single-rotor AFPMSMM-SSSR AFPMSM (single-stator single-rotor axial flux permanent magnet synchronous motor AFPMSM) are introduced. On the premise of the performance index, the design method of the traditional motor structure is given, and the optimization method of the yoke structure is studied by the finite element simulation, which makes the torque density reach the highest. At the same time, the magnetic circuit of AFPMSM yoke is studied, and the utilization ratio of yoke material is analyzed. On this basis, the lightweight structure design method of motor is explored, and the theoretical verification is given. Secondly, combined with the proposed lightweight design method, the SSSR AFPMSM is designed to be lightweight, and the output performance of the motor before and after optimization is compared. At the same time, the lightweight structure design of single-stator double-rotor AFPMSM SSDR AFPMSM and double-stator single-rotor axial flux permanent magnet synchronous motor double-stator single-rotor AFPMSM- DSSR AFPMSM are studied, and the performance comparison before and after optimization is given. The output performance of AFPMSM with different structures is compared and its rule is analyzed. Thirdly, the static eccentricity of AFPMSM is described and studied theoretically in view of the structure property of stator and rotor static eccentricity that is easy to occur in the assembly process of axial flux permanent magnet synchronous motor (PMSM). The influence of static eccentricity on the boundary condition of the motor magnetic field is analyzed. Based on the magnetic field analysis, the scalar magnetic potential is calculated, and the analytical expression of the static eccentric magnetic field is solved. The analytical results are compared with the three-dimensional finite element method. At the same time, the static eccentric magnetic field of multi-disk motor and AFPMSM considering stator slot are studied. Finally, the mechanical strength of SSDR AFPMSM and DSSR AFPMSM are studied. The assembly methods of different types of axial flux permanent magnet synchronous motor (PMSM) components are given, and then the actual force of the mechanical components under the load condition is described, and the mechanical strength is calculated by establishing the stress model. By synthesizing its shape and material properties, the minimum size value of mechanical strength is found to meet the load condition of motor, and the lightweight design of mechanical structures such as housing, rotating shaft and end cover is realized.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM341

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