本文關(guān)鍵詞： 永磁同步電機 矢量控制 弱磁控制 傳統(tǒng)雙電流調(diào)節(jié)器 單電流調(diào)節(jié)器　出處：《北京交通大學》2014年碩士論文　論文類型：學位論文

【摘要】：摘要：隨著全球能源危機的不斷加劇以及環(huán)境問題的進一步惡化,新能源汽車作為一種能夠高效利用有限的資源且對環(huán)境友好的交通工具受到了各方的關(guān)注,這也促進了新能源汽車的發(fā)展。永磁同步電機由于其相對直流電機具有較大的功率密度和較異步電機更優(yōu)的控制性能,成為了電動汽車研究中的一個重要對象。本文在永磁同步電機的數(shù)學模型基礎上,研究了基于轉(zhuǎn)子磁場定向的矢量控制方法,進一步對永磁同步電機的弱磁控制進行了研究,采用不同的弱磁控制方法對電機進行了仿真研究和結(jié)果分析。 對永磁同步電機的幾種不同的轉(zhuǎn)子結(jié)構(gòu)進行了介紹,根據(jù)隱極式和凸極式永磁同步電機直軸電感值和交軸電感值的不同,建立各自的數(shù)學模型。在數(shù)學模型的基礎上介紹永磁同步電機的控制技術(shù),分別為轉(zhuǎn)子磁場定向的矢量控制技術(shù)和直接轉(zhuǎn)矩控制技術(shù),并對轉(zhuǎn)子磁場定向控制中的零直軸電流控制和最大轉(zhuǎn)矩電流比控制進行了分析。 研究了基于傳統(tǒng)雙電流調(diào)節(jié)器的永磁同步電機弱磁控制,為了更好地展開對弱磁的分析,利用電壓極限橢圓和電流極限圓的概念對基于雙電流調(diào)節(jié)器的普通恒轉(zhuǎn)矩弱磁控制和超前角弱磁控制進行研究,前者是通過跟蹤恒轉(zhuǎn)矩曲線與電壓極限橢圓的交點來實現(xiàn)弱磁,后者則是通過補償電流矢量的角度,再由角度和電流矢量的幅值給定交直軸電流,之后對最大輸出功率弱磁控制進行了介紹。 之后本文重點研究了基于單電流調(diào)節(jié)器的永磁同步電機弱磁控制,在采用傳統(tǒng)雙電流調(diào)節(jié)器進行弱磁控制的過程中,會出現(xiàn)在深度弱磁情況下電流調(diào)節(jié)器之間相互耦合程度加重的情況,易使控制系統(tǒng)失去控制,為了解決這個問題采用單電流調(diào)節(jié)器弱磁控制,對基于單電流調(diào)節(jié)器的兩種弱磁控制方法——電壓角度法和變交軸電壓法分別進行了研究。 本文最后搭建模型對永磁同步電機最基本的矢量控制id=0和MTPA進行了仿真研究,對比兩種控制方法在控制性能上的差異；之后分別對基于傳統(tǒng)雙電流調(diào)節(jié)器的永磁同步電機弱磁控制的幾種方法進行了仿真研究,分析各自的仿真結(jié)果；在此基礎上對基于單電流調(diào)節(jié)器的永磁同步電機弱磁控制的兩種方法進行了仿真研究,對兩種控制方法下的波形進行了分析比較。
[Abstract]:Absrtact: with the aggravation of the global energy crisis and the further deterioration of environmental problems, new energy vehicles as a kind of efficient use of limited resources and environmentally friendly vehicles have attracted attention. The permanent magnet synchronous motor (PMSM) has higher power density than DC motor and better control performance than asynchronous motor. In this paper, based on the mathematical model of permanent magnet synchronous motor (PMSM), the vector control method based on rotor flux orientation is studied. The weak magnetic field control of permanent magnet synchronous motor (PMSM) is further studied, and the simulation research and result analysis of PMSM are carried out by using different weak magnetic field control methods. Several different rotor structures of permanent magnet synchronous motor (PMSM) are introduced in this paper. According to the difference of the direct axis inductance and the cross axis inductance of the permanent magnet synchronous motor with hidden pole and salient pole. On the basis of the mathematical model, the control technology of permanent magnet synchronous motor is introduced, which includes rotor flux oriented vector control technology and direct torque control technology. The zero-axis current control and the maximum torque current ratio control in the rotor flux-oriented control are analyzed. The magnetic weakening control of permanent magnet synchronous motor (PMSM) based on the traditional dual current regulator is studied in order to develop the analysis of the weak magnetic field better. Based on the concepts of voltage limit ellipse and current limit circle, the general constant torque weak magnetic control and leading angle weak magnetic control based on double current regulator are studied. The former realizes weak magnetic field by tracking the intersection point of constant torque curve and voltage limit ellipse, while the latter realizes weak magnetic field by compensating the angle of current vector, and then gives the alternating straight axis current by angle and amplitude of current vector. Then the maximum output power weak magnetic control is introduced. Then this paper focuses on the single current regulator based on the permanent magnet synchronous motor weak magnetic control, in the process of using the traditional dual current regulator to control the weak magnetic field. In order to solve this problem, the coupling between the current regulators is aggravated and the control system is easily out of control. In order to solve this problem, the single current regulator is used to control the weak magnetic field. Two weak magnetic control methods based on single current regulator, voltage angle method and alternating axis voltage method, are studied respectively. At the end of this paper, the basic vector control id=0 and MTPA are simulated and studied, and the difference of control performance between the two control methods is compared. Then, several methods of permanent magnet synchronous motor (PMSM) weak magnetic control based on traditional dual current regulator are simulated, and their simulation results are analyzed. On this basis, two methods of permanent magnet synchronous motor (PMSM) weak magnetic control based on single current regulator are simulated, and the waveforms under the two control methods are analyzed and compared.
【學位授予單位】：北京交通大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM341

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