本文關(guān)鍵詞：電動(dòng)車用永磁電動(dòng)機(jī)設(shè)計(jì)及弱磁控制　出處：《浙江大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 內(nèi)置式永磁電機(jī) 優(yōu)化設(shè)計(jì) 有限元仿真 弱磁控制

【摘要】：作為電動(dòng)汽車驅(qū)動(dòng)的核心元件之一,驅(qū)動(dòng)電機(jī)的性能對(duì)電動(dòng)汽車的運(yùn)行狀況有著顯著的影響,因此設(shè)計(jì)效率、可靠性高、控制性能好的電機(jī)對(duì)電動(dòng)汽車的應(yīng)用與發(fā)展具十分重要的意義。本文以高功率密度、高效率和寬調(diào)速范圍為目的設(shè)計(jì)了一臺(tái)電動(dòng)汽車用永磁電機(jī),并對(duì)其弱磁控制作了初步分析。 本文設(shè)計(jì)的電動(dòng)汽車電機(jī)采用內(nèi)置式“V”形轉(zhuǎn)子結(jié)構(gòu),電機(jī)的額定功率為20kW,轉(zhuǎn)速為2000r/min。本文首先討論了永磁電機(jī)的基本設(shè)計(jì)方法及主要參數(shù)的選取原則。使用有限元分析軟件,設(shè)計(jì)和優(yōu)化內(nèi)置式永磁電機(jī)轉(zhuǎn)子槽的結(jié)構(gòu),以減小電機(jī)運(yùn)行過程中的齒槽轉(zhuǎn)矩。通過調(diào)整永磁體的極間距離的方法,研究了在該參數(shù)對(duì)電機(jī)的空載反電勢(shì)以及氣隙磁密基波分量的影響,以找到優(yōu)化的“V”形內(nèi)置式永磁電機(jī)設(shè)計(jì)規(guī)律。在永磁電機(jī)輸出最大轉(zhuǎn)矩的前提下,研究了繞組分別通入額定電流和兩倍的額定電流的情況下,相鄰永磁體間距離對(duì)電磁轉(zhuǎn)矩和轉(zhuǎn)矩脈動(dòng)的影響。通過對(duì)電機(jī)空載反電勢(shì)、各相繞組的自感和互感諧波等各種因素的分析,得到了其對(duì)電機(jī)轉(zhuǎn)矩脈動(dòng)的影響。使用Abaqus有限元軟件對(duì)電機(jī)額定轉(zhuǎn)速下的應(yīng)力場(chǎng)進(jìn)行分析,確定電機(jī)轉(zhuǎn)子沖片最大受力點(diǎn)的位置及轉(zhuǎn)子沖片所產(chǎn)生的形變量。 弱磁控制是永磁電機(jī)作為電動(dòng)汽車驅(qū)動(dòng)過程中的主要控制策略。本文描述了電動(dòng)汽車用永磁電機(jī)弱磁調(diào)速控制的原理和基本方法,并且針對(duì)本文設(shè)計(jì)的電機(jī),使用Matlab/Simulink仿真軟件設(shè)計(jì)了其弱磁調(diào)速方法,并給出相應(yīng)仿真結(jié)果,以擴(kuò)展電機(jī)的轉(zhuǎn)速運(yùn)行范圍。 本文實(shí)現(xiàn)了樣機(jī)制造,進(jìn)行了部分實(shí)驗(yàn),得出了樣機(jī)的相關(guān)參數(shù)及實(shí)驗(yàn)曲線。
[Abstract]:As one of the core components of electric vehicle drive, has a significant impact on the performance of running status of electric vehicle drive motor, so the efficiency of design, high reliability, good control performance of the motor is very important for the application and development of electric vehicles. The high power density, high efficiency and wide speed range for the purpose of design an electric vehicle with permanent magnet motor, and the weak magnetron was analyzed.
The design of the motor with built-in "V" - shaped rotor structure, the motor rated power is 20kW, the speed is 2000r/min. this paper firstly discusses the selection principle of permanent magnet motor the basic design method and main parameters. Using finite element analysis software, the design and optimization of permanent magnet motor rotor slot structure, the reducing the cogging torque in the process of motor running. Through the method of distance adjustment of permanent magnet pole, on the parameters of the motor no-load EMF and the air gap flux density of the fundamental component of the law design of interior permanent magnet machines in order to find the optimal shape of "V". In the premise of permanent magnet motor maximum output the torque under the rated current of the winding are respectively inserted into the rated current and two times under the condition that the influence on the electromagnetic torque and torque ripple of the distance between adjacent permanent magnets. The back EMF of the motor, the Analysis of various factors such as harmonic inductance and mutual inductance of windings, the influence on the torque ripple of the motor under the rated speed. The stress field is analyzed using the finite element software Abaqus, to determine the maximum position of motor rotor punching and rotor punching point caused by deformation.
Weak magnetic control is a permanent magnet motor as electric vehicle drive control strategy in the process. This paper describes the principle of permanent magnet motor field weakening control and basic methods for electric vehicles, and the motor is designed in this paper, the weak magnetic control design method using the Matlab/Simulink simulation software, and the corresponding simulation results, to run range expansion speed motor.
In this paper, the prototype manufacturing is realized, and some experiments are carried out. The parameters and experimental curves of the prototype are obtained.

【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM351

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