本文關(guān)鍵詞：增程式電動(dòng)車輔助動(dòng)力單元?jiǎng)討B(tài)建模及協(xié)調(diào)控制研究　出處：《吉林大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 增程式電動(dòng)車 輔助動(dòng)力單元 動(dòng)態(tài)建模 起動(dòng)控制 工作點(diǎn)切換控制

【摘要】：伴隨國(guó)民生活水平的提高,家庭轎車逐漸成為日常交通工具的主流。汽車保有量的日益攀升帶給人們方便舒適的同時(shí),也引發(fā)了交通治理,城市污染和氣候變化等一系列社會(huì)問(wèn)題,更是加劇了國(guó)家能源安全問(wèn)題。為此近幾年國(guó)家和政府不斷以國(guó)家政策和地方配套政策的方式鼓勵(lì)和推廣新能源汽車及相關(guān)設(shè)施的發(fā)展,取得了良好效果。鑒于當(dāng)前動(dòng)力電池、充電設(shè)施等關(guān)鍵技術(shù)尚未成熟化,純電動(dòng)汽車推廣進(jìn)入瓶頸期,增程式電動(dòng)車迎刃而上,在純電動(dòng)車基礎(chǔ)上增加一個(gè)內(nèi)燃發(fā)電機(jī)組作為輔助動(dòng)力單元(APU)來(lái)增加整車?yán)m(xù)駛里程,兼具傳統(tǒng)車和純電動(dòng)車的優(yōu)點(diǎn),成為當(dāng)前新能源汽車領(lǐng)域的焦點(diǎn)。本文所研究的APU是由汽油發(fā)動(dòng)機(jī)、永磁式ISG電機(jī)及其控制組成的發(fā)電系統(tǒng),設(shè)置三個(gè)工作點(diǎn)：怠速點(diǎn)、經(jīng)濟(jì)功率工作點(diǎn)和額定功率工作點(diǎn)�；谡n題組增程式電動(dòng)車科研項(xiàng)目,發(fā)現(xiàn)傳統(tǒng)控制策略下APU起動(dòng)和由低功率工作點(diǎn)向高功率工作點(diǎn)切換過(guò)程中會(huì)出現(xiàn)較大的轉(zhuǎn)速超調(diào)量和轉(zhuǎn)矩沖擊,伴隨嚴(yán)重的機(jī)械噪聲,直接影響整車平順性和燃油經(jīng)濟(jì)性。為此把APU起動(dòng)和工作點(diǎn)切換過(guò)程作為研究?jī)?nèi)容,首先研究發(fā)動(dòng)機(jī)和ISG電機(jī)的轉(zhuǎn)速、轉(zhuǎn)矩動(dòng)態(tài)輸出特性,建立發(fā)動(dòng)機(jī)、ISG電機(jī)系統(tǒng)及APU動(dòng)態(tài)模型,然后通過(guò)研究發(fā)動(dòng)機(jī)和ISG電機(jī)之間轉(zhuǎn)速轉(zhuǎn)矩的協(xié)調(diào)關(guān)系,制定了新的APU起動(dòng)和工作點(diǎn)切換控制策略,極大改善了APU動(dòng)態(tài)響應(yīng)性能。具體完成了以下內(nèi)容：(1)APU控制分析研究。分別闡述了APU整車控制和系統(tǒng)控制的技術(shù)特點(diǎn),以APU系統(tǒng)控制中的動(dòng)態(tài)控制為研究重點(diǎn),分析了APU傳統(tǒng)起動(dòng)控制和工作點(diǎn)切換控制存在的技術(shù)問(wèn)題,同時(shí)分析了當(dāng)前面向控制的發(fā)動(dòng)機(jī)和ISG電機(jī)系統(tǒng)動(dòng)態(tài)建模技術(shù),為全文研究奠定牢固基礎(chǔ)。(2)APU動(dòng)態(tài)模型搭建。在Matlab/Simulink軟件環(huán)境下搭建了發(fā)動(dòng)機(jī)平均值模型,電機(jī)本體模型,矢量控制模型及電驅(qū)動(dòng)系統(tǒng)模型,然后根據(jù)牛頓第二定律,建立不同工況下APU運(yùn)動(dòng)方程,以此將發(fā)動(dòng)機(jī)和ISG電機(jī)系統(tǒng)模型聯(lián)合成APU動(dòng)態(tài)模型,最后利用階躍輸入仿真驗(yàn)證了各自動(dòng)態(tài)響應(yīng)性能。(3)APU起動(dòng)控制策略制定與仿真驗(yàn)證�；诶肐SG電機(jī)較大起動(dòng)轉(zhuǎn)矩來(lái)避免發(fā)動(dòng)機(jī)起動(dòng)加濃噴油的思想,制定了新的APU起動(dòng)控制策略,詳細(xì)研究了控制過(guò)程中初次點(diǎn)火轉(zhuǎn)速值,怠速值,電機(jī)拖動(dòng)發(fā)動(dòng)機(jī)方式和電機(jī)轉(zhuǎn)矩退出方式的影響,最后建模仿真并與傳統(tǒng)控制策略對(duì)比,驗(yàn)證了該起動(dòng)控制策略在起動(dòng)時(shí)間,平順性和燃油經(jīng)濟(jì)性方面具有明顯優(yōu)勢(shì)。(4)APU工作點(diǎn)切換控制策略制定與仿真驗(yàn)證。所制定的APU工作點(diǎn)切換控制策略可根據(jù)工作點(diǎn)切換類型不同采用不同的控制方式,其中由低功率工作點(diǎn)向高功率工作點(diǎn)切換控制是本文研究重點(diǎn)。詳細(xì)研究了控制過(guò)程中發(fā)動(dòng)機(jī)節(jié)氣門控制方式,發(fā)動(dòng)機(jī)卸載方式,轉(zhuǎn)速拖動(dòng)方式和發(fā)動(dòng)機(jī)加載方式的影響,最后建模仿真并與傳統(tǒng)控制策略對(duì)比,驗(yàn)證了該切換控制策略在切換時(shí)間,平順性和燃油經(jīng)濟(jì)性方面具有明顯優(yōu)勢(shì)。本文使用Simulink軟件搭建了合理的APU動(dòng)態(tài)模型,制定了新的APU起動(dòng)和工作點(diǎn)切換控制策略,為他人研究提供了一種借鑒,有助于推進(jìn)APU產(chǎn)品開發(fā)和推廣。
[Abstract]:With the improvement of the living standard, the mainstream family car has become daily transportation. Car ownership is rising at the same time bring people comfortable and convenient, but also led to traffic management, a series of social problems such as climate change and pollution of the city, is exacerbated by the national energy security issues. The development of this country in recent years and the government has been in the national policy and local supporting policies to encourage and promote new energy vehicles and related facilities, and achieved good results. In view of the current power battery, charging facilities and other key technology is not yet mature, promotion of electric vehicles into the bottleneck, the extended range electric vehicle meet the blade, in a pure electric vehicle based on the increase a diesel generator as an auxiliary power unit (APU) to increase the vehicle mileage, the advantages of both the traditional vehicles and pure electric vehicles, has become the new energy vehicles in the field Focus. This paper is composed of APU gasoline engine, ISG power system of permanent magnet motor and its control component, set up three working point: idle, economic power point and rated power operating point. The research group extended range electric vehicle based on scientific research project, found a large speed overshoot and torque shock the traditional control strategy under APU starting and from low power point to high power switching process, with mechanical noise is serious, directly affects the vehicle ride comfort and fuel economy. For the APU starting and working point of the switching process as the research content, first on the engine and ISG motor speed, torque dynamic output characteristics. The establishment of engine, ISG motor system and APU dynamic model, rotational speed and torque coordination relationship and through the research of the engine and ISG motor, developed a new starting point APU and switching control The strategy, which greatly improved the dynamic response performance of APU. The specific as follows: (1) analysis. APU control respectively expounds the technical features of APU control and vehicle control system, a dynamic APU control system is the focus of the study, analysis of the traditional APU technology starting problems of control and switching control point at the same time, analysis of the current control oriented engine and ISG motor dynamic system modeling technology, lay a solid foundation for the research. (2) to build the dynamic model of APU. The average value of the engine model is built in the Matlab/Simulink software environment, the model of motor, vector control system model and drive power model, then according to Newton's second law, the establishment of APU equations under different conditions, the dynamic model of APU combined engine and ISG motor system model, finally using the step input simulation to verify the automatic state. The performance of APU. (3) starting control strategy and simulation. The larger starting torque to avoid engine starting fuel injection motor based on the thought of using ISG, to develop a new APU starting control strategy, control of the process of the initial ignition speed value, idle value, electric machine and drag the engine torque out of the way, finally, the modeling and simulation with the traditional control strategy comparison, verification of the starting control strategy in the starting time, has the advantage of comfort and fuel economy. (4) APU working point switching control strategy formulation and simulation. The APU operating point switching control strategy according to the working point switch different types of different control methods, which is composed of low power point to high power point switching control is the focus of this paper. A detailed study of the engine control in the process of solar term door control The way, the engine unloading speed, impact drag and engine load, the modeling and simulation with the traditional control strategy comparison, verification of the switching control strategy in switching time, has the advantage of comfort and fuel economy. This paper uses the Simulink software to build a APU dynamic model is reasonable, to develop a new APU the starting point and switching control strategy, and provides a reference for the research of others, help to promote the promotion and development of APU products.

【學(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：U469.72

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