【摘要】：目前燃料電池增程式電動車是傳統(tǒng)車向純電動汽車過渡的主流車型。燃料電池增程式電動車既能發(fā)揮純電動車高效、節(jié)能的優(yōu)勢,又能彌補其續(xù)駛里程不足的缺點。對于燃料電池增程式商用車的研究,包括合理地選擇燃料電池增程器、對于燃料電池增程式商用車動力系統(tǒng)的匹配分析、增程器控制策略的設計與優(yōu)化,并在此基礎上對燃料電池商用車動力系統(tǒng)性能進行分析,在新能源商用車研發(fā)過程中有重要意義。針對所研究的燃料電池增程式商用車動力系統(tǒng)的結構特性,確定了燃料電池增程式商用車動力系統(tǒng)間接并聯(lián)式的動力系統(tǒng)“FC+B”的動力系統(tǒng)構的結構并對部件的選型進行分析并進行匹配計算。根據(jù)燃料電池增程式商用車增程器特性和商用車動力系統(tǒng)的特點,確定了增程器控制策略的設計原則。分析對比了開關式控制策略、功率跟隨式控制策略、模糊邏輯控制策略等特性,構建了適用于燃料電池增程式商用車的燃料電池增程器開關/功率跟隨式增程器控制策略,并對策略模糊算法進行了研究。根據(jù)燃料電池增程式商用車動力系統(tǒng)的結構特點,本文建立了Cruise/Simulink的動力系統(tǒng)聯(lián)合仿真模型。運用Simulink軟件建立了燃料電池增程器的仿真模型。對增程器的控制策略進行了建模,該策略通過動力電池SOC和整車需求功率的門限值,實現(xiàn)對燃料電池的開關狀態(tài)和燃料電池輸出功率的大小進行控制調節(jié)。參照實車運行的動力性和經濟性試驗測試結果,采用與實車測試相同的工況狀態(tài),對整車仿真模型進行驗證,將仿真分析結果與試驗測試結果進行對比分析,結果表明所建立的仿真模型是能夠比較真實地反映燃料電池增程式商用車動力系統(tǒng)的運行特性�；谒⒎抡嫫脚_,進行了燃料電池增程式商用車動力系統(tǒng)動力性和經濟性的仿真分析,研究表明功率跟隨模糊控制算法有助于提高整車整體性能。對燃料電池增程式商用車動力系統(tǒng)參數(shù)進行了選型的優(yōu)化分析,分析了燃料電池和驅動電池性能參數(shù)對商用車動力系統(tǒng)性能的影響,并20種動力系統(tǒng)構型的匹配方案進行仿真分析,確定了動力性能最優(yōu)與經濟性能最優(yōu)的兩種方案。再此基礎上研究了增程器運行功率區(qū)間的匹配,以提高經濟性為目的,仿真確定最優(yōu)的功率輸出區(qū)間的上下限。
[Abstract]:At present, fuel cell programmable electric vehicle is the mainstream vehicle in the transition from traditional vehicle to pure electric vehicle. Fuel cell programmable electric vehicle can not only bring into play the advantages of pure electric vehicle such as high efficiency and energy saving, but also make up for its shortage of running mileage. The research on the fuel cell augmentation commercial vehicle includes the reasonable selection of fuel cell range booster, the matching analysis of fuel cell incremental commercial vehicle power system, the design and optimization of the control strategy of the extended range vehicle. On this basis, the performance of fuel cell commercial vehicle power system is analyzed, which is of great significance in the research and development of new energy commercial vehicle. In view of the structural characteristics of the fuel cell programmed commercial vehicle power system, The structure of the power system of the indirect parallel power system "FC B" of the fuel cell incremental commercial vehicle power system is determined, and the selection of the components is analyzed and the matching calculation is carried out. According to the characteristics of fuel cell programmed commercial vehicle range booster and the characteristics of commercial vehicle power system, the design principle of the control strategy of the increasing program commercial vehicle is determined. The characteristics of switching control strategy, power following control strategy and fuzzy logic control strategy are analyzed and compared. The strategy fuzzy algorithm is also studied. According to the structural characteristics of fuel cell enhanced program commercial vehicle power system, a joint simulation model of Cruise/Simulink power system is established in this paper. The simulation model of fuel cell range booster is established by using Simulink software. The control strategy of the range booster is modeled. The switching state of the fuel cell and the output power of the fuel cell are regulated by the power cell SOC and the power threshold of the vehicle. According to the test results of power and economy, the simulation model of the whole vehicle is verified by using the same condition state as the real vehicle test, and the results of simulation and test are compared and analyzed. The results show that the simulation model can truly reflect the operating characteristics of the fuel cell enhanced commercial vehicle power system. Based on the simulation platform, the power performance and economy of the fuel cell enhanced commercial vehicle power system are simulated and analyzed. The research shows that the power following fuzzy control algorithm is helpful to improve the overall performance of the vehicle. The parameters of fuel cell added program commercial vehicle power system are optimized and analyzed, and the influence of fuel cell and drive battery performance parameters on the performance of commercial vehicle power system is analyzed. Two schemes of optimal dynamic performance and optimal economic performance are determined by simulation and analysis of 20 kinds of matching schemes of power system configuration. On this basis, the matching of the operating power interval of the range booster is studied. In order to improve the economy, the upper and lower limits of the optimal power output range are determined by simulation.
【學位授予單位】：北京交通大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：U469.72

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