發(fā)布時間：2019-03-28 16:07

【摘要】：針對現(xiàn)有純電動大巴驅動用釹鐵硼永磁同步電動機存在的高成本、電機高速失控時可能出現(xiàn)過壓風險的問題，本文提出采用一種鐵氧體永磁的永磁輔助式磁阻同步電動機作為純電動大巴驅動電機，這種電機具有低成本、高轉矩密度、高安全性的優(yōu)點。 本文首先介紹了純電動大巴及其驅動電機的發(fā)展現(xiàn)狀，針對現(xiàn)有永磁同步驅動電機的不足，提出利用永磁輔助式磁阻同步電動機作為驅動電機，并對永磁輔助式磁阻同步電動機進行了詳細介紹；其次對200kW永磁輔助式磁阻同步電動機進行了電磁設計，著重對四種不同轉子結構、三種不同極槽配合以及多種不同定子繞組設計等方面進行對比分析，確定了比較合適的電機結構方案，并對轉子結構中V形磁鋼張角與隔磁層張角進行了進一步優(yōu)化；針對純電動大巴驅動電機工作的復雜工況，建立了驅動電機多領域聯(lián)合仿真，主要包括對電機不同工況時各部件，尤其是溫度敏感的材料進行溫度場仿真以及保證轉子結構安全的應力場仿真，為轉子安全提供參考依據(jù)；利用Maxwell軟件計算出電機的交、直軸同步電感，利用RMxprt軟件自帶轉子結構建立其本體等效模型，同時建立了Simplorer與Maxwell場路聯(lián)合仿真平臺進行電機電動狀態(tài)下聯(lián)合仿真；最后介紹了6kW永磁輔助式磁阻同步電動機小樣機的電磁設計與試制過程，針對試制電機轉子的安全問題，，提出了改進方案，并對改進后電機進行了仿真分析。
[Abstract]:The invention provides a permanent-magnet auxiliary reluctance synchronous motor with a ferrite permanent magnet as a pure electric bus driving motor, The motor has the advantages of low cost, high torque density and high safety. In this paper, the present situation of the pure electric bus and its driving motor is introduced in this paper. In view of the shortage of the existing permanent-magnet synchronous drive motor, a permanent-magnet auxiliary reluctance synchronous motor is used as the driving motor, and the permanent-magnet auxiliary reluctance synchronous motor is introduced in detail. In this paper, the electromagnetic design of a 200kW permanent-magnet auxiliary reluctance synchronous motor is carried out, and the comparison and analysis of four different rotor structures, three different pole slots and many different stator winding designs are analyzed, and the proper motor structure is determined. in that case of the case, the angle of the V-shaped magnetic steel in the rotor structure and the angle of the magnetic layer are further optimized, and the multi-field joint simulation of the drive motor is established for the complex working condition of the operation of the pure electric bus drive motor, The temperature field simulation of the component, especially the temperature-sensitive material, and the stress field simulation to ensure the safety of the rotor structure are simulated, and the reference basis is provided for the safety of the rotor; the alternating current and the direct-axis synchronous inductance of the motor are calculated by using the Maxwell software, and the body equivalent die is established by using the rotor structure of the RMxprt software In this paper, the combined simulation of Simplano and Maxwell field road joint simulation platform is established, and the electromagnetic design and trial production process of the small prototype of the 6kW permanent-magnet auxiliary reluctance synchronous motor are introduced, and the improvement party is put forward for the safety of the rotor of the trial-production motor. The case is simulated and the improved motor is simulated.
【學位授予單位】：湖北工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM341

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本文編號：2449021