發(fā)布時間：2018-08-23 21:11

【摘要】：全球汽車工業(yè)飛速發(fā)展，汽車產(chǎn)銷量高速增長。然而日益增長的汽車數(shù)量與逐日消耗的石油資源必然形成一對矛盾體。為了緩解這一對矛盾體，車輛的能源轉(zhuǎn)型勢在必行。純電動汽車由于零污染和零排放成為人們心目中“清潔汽車”，同時純電動汽車也是我國汽車工業(yè)的追求。但在實際研發(fā)中，由于純電動汽車受到電池技術、充電設施不完善等原因的制約，還不能廣泛推廣。增程式電動汽車作為混合動力汽車的一種，能解決純電動汽車續(xù)駛里程短的問題，同時相對于內(nèi)燃機汽車油耗顯著降低，具有良好的應用前景。 論文從提高增程式電動汽車的燃油經(jīng)濟性和滿足車輛動力性能以及降低環(huán)境污染的角度出發(fā)，進行增程式電動汽車整車控制策略的研究。論文研究主要內(nèi)容包括以下幾個方面： （1）根據(jù)增程式電動汽車整車基本參數(shù)和所需性能指標，對車輛動力總成進行參數(shù)設計計算，應用Cruise軟件建立整車模型，通過動力學仿真實驗驗證了所匹配參數(shù)能夠滿足車輛動力性指標要求。 （2）分析了增程式電動汽車傳統(tǒng)恒功率控制策略特點和純電動汽車行駛里程的影響因素，確定發(fā)動機工作曲線，設計出經(jīng)濟性（ECO）和動力性（SPORT）兩種控制策略，，應用Cruise與Matlab/Simulink聯(lián)合仿真實驗對控制策略進行驗證，并與恒功率控制策略進行經(jīng)濟性、動力性和排放性對比分析。 （3）在dSPACE軟硬件環(huán)境下，確定增程式電動汽車電機控制的PWM調(diào)制方式，根據(jù)信號轉(zhuǎn)換原理，設計了具有電流和電壓檢測、信號接收與輸出功能的信號轉(zhuǎn)換實驗板，通過Proteus軟件仿真驗證了信號轉(zhuǎn)換實驗板的功能。 研究結果表明：車輛行駛在城市工況時（如NEDC工況）選擇ECO控制策略模式，相比于SPORT和恒功率控制策略，燃油經(jīng)濟性能最好且CO2排放量最低；車輛行駛在高速復雜工況中（如混合工況），選擇SPORT控制策略模式，相比于ECO和恒功率控制策略，燃油經(jīng)濟性能最好并且動力性最優(yōu)。
[Abstract]:With the rapid development of the global automobile industry, automobile production and sales are growing at a high speed. However, the increasing number of cars and the daily consumption of oil resources are bound to form a contradiction. In order to alleviate this contradiction, vehicle energy transformation is imperative. Due to zero pollution and zero emission, pure electric vehicle (EV) has become the "clean car" in people's mind. At the same time, pure electric vehicle (EV) is also the pursuit of automobile industry in China. However, due to the limitation of battery technology and imperfect charging facilities, pure electric vehicles can not be widely popularized in practice. As a hybrid electric vehicle, the extended range electric vehicle can solve the problem of short driving range of pure electric vehicle and reduce the fuel consumption of internal combustion engine vehicle significantly, so it has a good application prospect. In order to improve fuel economy, meet vehicle power performance and reduce environmental pollution, the control strategy of extended range electric vehicle is studied in this paper. The main contents of this paper are as follows: (1) according to the basic parameters and required performance indexes of the extended range electric vehicle, the parameters of the vehicle powertrain are designed and calculated, and the vehicle model is established by using Cruise software. The dynamic simulation results show that the matching parameters can meet the requirements of vehicle dynamic performance. (2) the characteristics of conventional constant power control strategy of extended range electric vehicle and the influencing factors of driving range of pure electric vehicle are analyzed. The engine working curve is determined, and two control strategies, economic (ECO) and dynamic (SPORT), are designed. The control strategy is verified by the Cruise and Matlab/Simulink simulation experiments, and the control strategy is economical with the constant power control strategy. Comparison and analysis of power and emission. (3) under the environment of dSPACE software and hardware, the PWM modulation mode controlled by extended range electric vehicle motor is determined. According to the principle of signal conversion, the detection of current and voltage is designed. The function of signal conversion test board is verified by Proteus software. The results show that the ECO control strategy mode is chosen when the vehicle is running in the city (such as the NEDC mode), compared with the SPORT and constant power control strategy, the fuel economy performance is the best and the CO2 emission is the lowest. In the case of high speed and complex operating conditions (such as mixed conditions), the SPORT control strategy mode is chosen. Compared with the ECO and constant power control strategy, the fuel economy performance is the best and the power performance is optimal.
【學位授予單位】：遼寧工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U469.72

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本文編號：2199930