【摘要】：兩自由度旋轉直線電機是一種無中間傳動裝置的新型電機,集旋轉電機、直線電機于一體,通過控制兩套三相繞組供電方式,可以實現(xiàn)電機的旋轉運動、直線運動以及兩者合成的螺旋運動。該電機具有材料利用率高、協(xié)同控制精度高、機械集成度高等優(yōu)點,在工業(yè)領域應用前景廣闊。將該電機應用于飛輪儲能系統(tǒng),可實現(xiàn)電機的自懸浮功能,減小飛輪系統(tǒng)的體積,提高飛輪系統(tǒng)的功率密度。本文在分析現(xiàn)有旋轉直線電機結構的基礎上,基于飛輪儲能用電機系統(tǒng)中存在的問題,對雙定子兩自由度旋轉直線電機的機械結構、運行機理、電磁耦合、軸向力以及樣機實驗等方面進行分析研究,研究內容如下:首先,針對現(xiàn)有的兩自由度旋轉直線電機的結構和控制方式,對組合式和耦合式電機的結構特征和運行機理進行分類比較。對新型的雙定子電機結構進行數(shù)學模型,理論解析其特殊結構的氣隙磁場,研究其實現(xiàn)旋轉直線兩自由度運動的運行原理,研究該電機可行的機械結構。其次,針對雙定子旋轉直線電機電磁耦合問題,建立三維有限元仿真模型,從轉子軛材料、轉子軛厚度及充磁方式等方面,對電機旋轉磁場與行波磁場的電磁耦合特性進行研究,并根據(jù)研究結果給出抑制電磁耦合的方法,為雙定子兩自由度旋轉直線電機的設計提供依據(jù)。然后,針對兩自由度旋轉直線運動耦合問題,分析內外電機結構對軸向力波動的影響。理論分析紋波、齒槽效應、端部效應對內部直線電機推力波動的影響,并研究有效抑制推力波動的方法。分析外部旋轉電機不同定轉子長度以及無鐵心結構對軸向力波動的影響,研究有效抑制軸向力波動的電機結構,提高內外電機協(xié)同運動精度。最后,研制雙定子兩自由度旋轉直線電機樣機,分析樣機加工制作工藝,研究該類電機的測試方案,搭建兩自由度旋轉直線電機的實驗測試系統(tǒng),對該樣機的外部旋轉電機和內部直線電機主要性能參數(shù)進行實驗測試,為兩自由旋轉直線電機的進一步研究分析奠定了理論和實驗基礎。
[Abstract]:Two-degree-of-freedom rotating linear motor is a new type of motor without intermediate transmission device, which integrates rotating motor and linear motor in one. By controlling two sets of three-phase winding power supply mode, the rotating motion of motor can be realized. Linear motion and the spiral motion that combines the two. The motor has the advantages of high material utilization, high precision of cooperative control and high mechanical integration, so it has a wide application prospect in the field of industry. Applying the motor to the flywheel energy storage system, the self-suspension function of the motor can be realized, the volume of the flywheel system can be reduced, and the power density of the flywheel system can be improved. Based on the analysis of the existing rotating linear motor structure and the problems existing in the flywheel energy storage motor system, the mechanical structure, operation mechanism, electromagnetic coupling of the two-degree-of-freedom rotating linear motor with double stator are studied in this paper. The research contents are as follows: firstly, aiming at the structure and control mode of the two-degree-of-freedom rotating linear motor, the main contents of this paper are as follows: The structure characteristics and operation mechanism of the combined and coupled motors are classified and compared. The mathematical model of a new type of double stator motor is presented. The air gap magnetic field of its special structure is analyzed theoretically. The operating principle of the two degrees of freedom motion of the rotating linear motor is studied, and the feasible mechanical structure of the motor is studied. Secondly, aiming at the electromagnetic coupling problem of double stator rotating linear motor, a three-dimensional finite element simulation model is established, which includes the material of rotor yoke, the thickness of rotor yoke and the mode of magnetization. The electromagnetic coupling characteristics of rotating magnetic field and traveling wave magnetic field of motor are studied, and the method to restrain electromagnetic coupling is given according to the research results, which provides the basis for the design of two degrees of freedom rotating linear motor with double stator. Then, aiming at the coupling problem of two degrees of freedom rotating linear motion, the influence of internal and external motor structure on axial force fluctuation is analyzed. The effects of ripple, slotting effect and end effect on thrust fluctuation of internal linear motor are analyzed theoretically, and the effective methods to restrain thrust fluctuation are studied. The influence of different stator and rotor length of external rotating motor and non-core structure on axial force fluctuation is analyzed. The motor structure which can effectively restrain axial force fluctuation is studied and the precision of internal and external motor collaborative motion is improved. Finally, the prototype of two degrees of freedom rotating linear motor with double stator is developed, the manufacturing technology of the prototype is analyzed, the testing scheme of this kind of motor is studied, and the experimental testing system of two degrees of freedom rotating linear motor is built. The main performance parameters of the external rotating motor and the internal linear motor of the prototype are tested, which lays the theoretical and experimental foundation for the further research and analysis of the two free rotating linear motors.
【學位授予單位】：哈爾濱工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TM351

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本文編號：2447264